diff --git a/Makefile b/Makefile
index ba43dbc..082907d 100644
--- a/Makefile
+++ b/Makefile
@@ -29,8 +29,8 @@ APPNAME = OpenPGP
 
 # Application version
 APPVERSION_M = 2
-APPVERSION_N = 0
-APPVERSION_P = 1
+APPVERSION_N = 1
+APPVERSION_P = 0
 APPVERSION = "$(APPVERSION_M).$(APPVERSION_N).$(APPVERSION_P)"
 
 SPECVERSION:="3.3.1"
@@ -122,6 +122,8 @@ DISABLE_STANDARD_WEBUSB = 1
 DEFINES   += CUSTOM_IO_APDU_BUFFER_SIZE=\(255+5+64\)
 DEFINES   += HAVE_USB_CLASS_CCID
 DEFINES   += HAVE_RSA
+# Watchdog issue causing the device reset with long prime number computation
+# DEFINES   += WITH_SUPPORT_RSA4096
 
 ifeq ($(TARGET_NAME),TARGET_NANOS)
 DEFINES   += HAVE_UX_LEGACY
diff --git a/README.md b/README.md
index cee34ea..7e348e7 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ This specification is available in *doc* directory and at <https://g10code.com/p
 
 The application supports:
 
-- RSA with key up to 4096 bits
+- RSA with key up to 3072 bits
 - ECDSA with secp256k1
 - EDDSA with Ed25519 curve
 - ECDH with secp256k1 and curve25519 curves
@@ -321,3 +321,11 @@ It outputs 3 artifacts:
 
 - `compiled_app_binaries` within binary files of the build process for each device
 - `code-coverage` within HTML details of code coverage
+
+## Known limitations
+
+Today, the current App has some known limitations.
+
+- RSA4096 is disabled, because of an issue with the watchdog, resetting the device
+  during long prime number operation.
+- Using Ed25519 template, the decrypt doesn't output a correct result.
diff --git a/doc/user/app-openpgp.rst b/doc/user/app-openpgp.rst
index 8f4acfc..73e1c96 100644
--- a/doc/user/app-openpgp.rst
+++ b/doc/user/app-openpgp.rst
@@ -50,10 +50,10 @@ This specification is available in doc directory at [G10CODE]_.
 
 The application supports:
 
-- RSA with key up to 4096 bits
-- ECDSA with secp256k1, secp256r1, brainpool 256r1 and brainpool 256t1 curves
+- RSA with key up to 3072 bits
+- ECDSA with secp256R1
 - EDDSA with Ed25519 curve
-- ECDH with secp256k1, secp256r1, brainpool 256r1, brainpool 256t1 and curve25519 curves
+- ECDH with secp256R1 and curve25519 curves
 
 This release has known missing parts (see also [GPGADD]_):
 
@@ -154,8 +154,7 @@ The full menu layout is:
  |         Choose Type...
  |             RSA 2048
  |             RSA 3072
- |             RSA 4096
- |             NIST P256
+ |             SECP 256R1
  |             ED25519
  |         Set Template
  |     Seed mode *ON/OFF*
@@ -1100,7 +1099,7 @@ The *usage* field tells you each key purpose:
 The *card-no* field provides you with the serial number of the card on which the key are stored.
 You should have 3 or less keys with the same serial. These are the keys we want to restore.
 
-For each key you also have the key template (*rsa2048*, *rsa3072*, *rsa4096*, *ed2559*, *cv25519*) followed by the
+For each key you also have the key template (*rsa2048*, *rsa3072*, *ed2559*, *cv25519*) followed by the
 short fingerprint, e.g. ``ed25519/8451AAF7D43D1095``
 
 Please note the serial and the 3 key template names: ``FD6C11BE`` , ``ed25519:cv25519:ed25519``.
@@ -1465,7 +1464,7 @@ Its usage is:
  |  ``--set-templates SIG:DEC:AUT``
  |                        ``Set template identifier for selected 'key-type'``
  |                        ``If 'key-type' is not specified, set for all keys (SIG:DEC:AUT)``
- |                        ``Valid values are rsa2048, rsa3072, rsa4096, nistp256, ed25519, cv25519``
+ |                        ``Valid values are rsa2048, rsa3072, nistp256, ed25519, cv25519``
  |  ``--seed-key            Regenerate all keys, based on seed mode``
  |  ``--file FILE           Public Key export file (default is 'pubkey')``
 
diff --git a/manual-tests/manual.sh b/manual-tests/manual.sh
index d81eb33..d882da9 100755
--- a/manual-tests/manual.sh
+++ b/manual-tests/manual.sh
@@ -10,6 +10,7 @@ dirName=$(dirname "${exeName}")
 gnupg_home_dir="$(realpath "${dirName}/gnupg")"
 
 VERBOSE=false
+EXPERT=false
 
 #===============================================================================
 #
@@ -23,7 +24,8 @@ help() {
   echo
   echo "Options:"
   echo
-  echo "  -c <init|card|encrypt|decryptsign|verify>  : Requested command"
+  echo "  -c <init|reset|card|encrypt|decryptsign|verify>  : Requested command"
+  echo "  -e     : Expert mode mode"
   echo "  -v     : Verbose mode"
   echo "  -h     : Displays this help"
   echo
@@ -32,10 +34,10 @@ help() {
 
 #===============================================================================
 #
-#     kill_process - Kill running process, ensure clear next operation
+#     reset - Kill running process, ensure clear next operation
 #
 #===============================================================================
-kill_process() {
+reset() {
   # Kill running process
   killall scdaemon gpg-agent 2>/dev/null
 }
@@ -46,7 +48,7 @@ kill_process() {
 #
 #===============================================================================
 init() {
-  kill_process
+  reset
 
   # Cleanup old gnupg home directory
   dir=$(basename "${gnupg_home_dir}")
@@ -68,8 +70,11 @@ init() {
 #
 #===============================================================================
 card() {
+  local expert_mode=""
 
-  gpg --homedir "${gnupg_home_dir}" --card-edit
+  [[ ${EXPERT} == true ]] && expert_mode="--expert"
+
+  gpg --homedir "${gnupg_home_dir}" ${expert_mode} --card-edit
 }
 
 #===============================================================================
@@ -79,7 +84,8 @@ card() {
 #===============================================================================
 encrypt() {
   local recipient=""
-  kill_process
+  local verbose_mode=""
+  reset
   rm -fr foo*
   echo CLEAR > foo.txt
 
@@ -98,8 +104,9 @@ encrypt() {
 #
 #===============================================================================
 decrypt() {
+  local verbose_mode=""
 
-  kill_process
+  reset
 
   [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
 
@@ -121,8 +128,9 @@ decrypt() {
 #
 #===============================================================================
 sign() {
+  local verbose_mode=""
 
-  kill_process
+  reset
   rm -fr foo*
   echo CLEAR > foo.txt
 
@@ -137,8 +145,9 @@ sign() {
 #
 #===============================================================================
 verify() {
+  local verbose_mode=""
 
-  kill_process
+  reset
 
   [[ ${VERBOSE} == true ]] && verbose_mode="--verbose"
 
@@ -156,12 +165,12 @@ if (($# < 1)); then
   help
 fi
 
-while getopts ":c:vh" opt; do
+while getopts ":c:evh" opt; do
   case $opt in
 
     c)
       case ${OPTARG} in
-        init|card|encrypt|decrypt|sign|verify)
+        init|reset|card|encrypt|decrypt|sign|verify)
           CMD=${OPTARG}
           ;;
         *)
@@ -171,6 +180,7 @@ while getopts ":c:vh" opt; do
       esac
       ;;
 
+    e)  EXPERT=true ;;
     v)  VERBOSE=true ;;
     h)  help ;;
 
diff --git a/pytools/gpgapp/gpgcmd.py b/pytools/gpgapp/gpgcmd.py
index 795d96f..e378106 100644
--- a/pytools/gpgapp/gpgcmd.py
+++ b/pytools/gpgapp/gpgcmd.py
@@ -22,7 +22,7 @@ from enum import Enum, IntEnum
 KEY_TEMPLATES = {
     "rsa2048" : "010800002001",
     "rsa3072" : "010C00002001",
-    "rsa4096" : "011000002001",
+    # "rsa4096" : "011000002001", not supported yet
     "nistp256": "132A8648CE3D030107",
     "ed25519" : "162B06010401DA470F01",
     "cv25519" : "122B060104019755010501"
diff --git a/src/gpg_data.c b/src/gpg_data.c
index 8915e13..6b24683 100644
--- a/src/gpg_data.c
+++ b/src/gpg_data.c
@@ -231,6 +231,8 @@ int gpg_apdu_put_data(unsigned int ref) {
     void *pkey = NULL;
     cx_aes_key_t aes_key = {0};
     cx_err_t error = CX_INTERNAL_ERROR;
+    unsigned int pkey_size = 0;
+    unsigned int ksz, curve;
 
     G_gpg_vstate.DO_current = ref;
 
@@ -326,7 +328,7 @@ int gpg_apdu_put_data(unsigned int ref) {
             /* ----------------- Extended Header list -----------------*/
         case 0x3FFF: {
             unsigned int len_e, len_p, len_q;
-            unsigned int endof, ksz, reset_cnt;
+            unsigned int endof, reset_cnt;
             gpg_key_t *keygpg = NULL;
             // fecth 4D
             gpg_io_fetch_tl(&t, &l);
@@ -395,13 +397,11 @@ int gpg_apdu_put_data(unsigned int ref) {
                 break;
             }
 
-            // --- RSA KEY ---
             if (keygpg->attributes.value[0] == KEY_ID_RSA) {
                 unsigned int e = 0;
                 unsigned char *p, *q, *pq;
                 cx_rsa_public_key_t *rsa_pub;
                 cx_rsa_private_key_t *rsa_priv;
-                unsigned int pkey_size = 0;
                 // check length
                 ksz = U2BE(keygpg->attributes.value, 1) >> 3;
                 rsa_pub = (cx_rsa_public_key_t *) &G_gpg_vstate.work.rsa.public;
@@ -415,10 +415,12 @@ int gpg_apdu_put_data(unsigned int ref) {
                         pkey_size = sizeof(cx_rsa_3072_private_key_t);
                         pq = G_gpg_vstate.work.rsa.public3072.n;
                         break;
+#ifdef WITH_SUPPORT_RSA4096
                     case 4096 / 8:
                         pkey_size = sizeof(cx_rsa_4096_private_key_t);
                         pq = G_gpg_vstate.work.rsa.public4096.n;
                         break;
+#endif
                     default:
                         break;
                 }
@@ -475,15 +477,11 @@ int gpg_apdu_put_data(unsigned int ref) {
                     nvm_write(&G_gpg_vstate.kslot->sig_count, &reset_cnt, sizeof(unsigned int));
                 }
                 sw = SW_OK;
-            }
-            // --- ECC KEY ---
-            else if ((keygpg->attributes.value[0] == KEY_ID_ECDH) ||
-                     (keygpg->attributes.value[0] == KEY_ID_ECDSA) ||
-                     (keygpg->attributes.value[0] == KEY_ID_EDDSA)) {
-                unsigned int curve;
-
+            } else if ((keygpg->attributes.value[0] == KEY_ID_ECDH) ||
+                       (keygpg->attributes.value[0] == KEY_ID_ECDSA) ||
+                       (keygpg->attributes.value[0] == KEY_ID_EDDSA)) {
                 curve = gpg_oid2curve(&keygpg->attributes.value[1], keygpg->attributes.length - 1);
-                if (curve == 0) {
+                if (curve == CX_CURVE_NONE) {
                     sw = SW_WRONG_DATA;
                     break;
                 }
@@ -637,9 +635,35 @@ int gpg_apdu_put_data(unsigned int ref) {
                 sw = SW_WRONG_LENGTH;
                 break;
             }
-            nvm_write(ptr_v, G_gpg_vstate.work.io_buffer, G_gpg_vstate.io_length);
-            nvm_write(ptr_l, &G_gpg_vstate.io_length, sizeof(unsigned int));
-            sw = SW_OK;
+            switch (G_gpg_vstate.work.io_buffer[0]) {
+                case KEY_ID_RSA:
+                    ksz = U2BE(G_gpg_vstate.work.io_buffer, 1);
+                    if ((ksz != 2048) && (ksz != 3072)) {
+                        sw = SW_WRONG_DATA;
+                    } else {
+                        sw = SW_OK;
+                    }
+                    break;
+                case KEY_ID_ECDH:
+                case KEY_ID_ECDSA:
+                case KEY_ID_EDDSA:
+                    curve =
+                        gpg_oid2curve(G_gpg_vstate.work.io_buffer + 1, G_gpg_vstate.io_length - 1);
+                    if (curve == CX_CURVE_NONE) {
+                        sw = SW_WRONG_DATA;
+                    } else {
+                        sw = SW_OK;
+                    }
+                    break;
+                default:
+                    sw = SW_WRONG_DATA;
+                    break;
+            }
+
+            if (sw == SW_OK) {
+                nvm_write(ptr_v, G_gpg_vstate.work.io_buffer, G_gpg_vstate.io_length);
+                nvm_write(ptr_l, &G_gpg_vstate.io_length, sizeof(unsigned int));
+            }
             break;
 
             /* ----------------- PWS status ----------------- */
@@ -801,11 +825,13 @@ end:
 // cmd
 // resp  TID API COMPAT len_pub len_priv priv
 int gpg_apdu_get_key_data(unsigned int ref) {
-    cx_aes_key_t keyenc;
-    gpg_key_t *keygpg;
+    cx_aes_key_t keyenc = {0};
+    gpg_key_t *keygpg = NULL;
+    cx_rsa_private_key_t *key = NULL;
     unsigned int len = 0;
     cx_err_t error = CX_INTERNAL_ERROR;
     int sw = SW_UNKNOWN;
+    unsigned int ksz = 0;
 
     sw = gpg_init_keyenc(&keyenc);
     if (sw != SW_OK) {
@@ -832,18 +858,39 @@ int gpg_apdu_get_key_data(unsigned int ref) {
 
     // encrypted part
     switch (keygpg->attributes.value[0]) {
-        case KEY_ID_RSA:  // RSA
+        case KEY_ID_RSA:
+            ksz = U2BE(G_gpg_vstate.mse_dec->attributes.value, 1) >> 3;
+            switch (ksz) {
+                case 2048 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa2048;
+                    len = sizeof(cx_rsa_2048_private_key_t);
+                    break;
+                case 3072 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa3072;
+                    len = sizeof(cx_rsa_3072_private_key_t);
+                    break;
+#ifdef WITH_SUPPORT_RSA4096
+                case 4096 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa4096;
+                    len = sizeof(cx_rsa_4096_private_key_t);
+                    break;
+#endif
+            }
+
+            if ((key == NULL) || (key->size != ksz)) {
+                return SW_CONDITIONS_NOT_SATISFIED;
+            }
+
             // insert pubkey
             gpg_io_insert_u32(4);
             gpg_io_insert(keygpg->pub_key.rsa, 4);
 
             // insert privkey
             gpg_io_mark();
-            len = GPG_IO_BUFFER_LENGTH - G_gpg_vstate.io_offset;
             CX_CHECK(cx_aes_no_throw(&keyenc,
                                      CX_ENCRYPT | CX_CHAIN_CBC | CX_PAD_ISO9797M2 | CX_LAST,
-                                     (unsigned char *) &keygpg->priv_key.rsa4096,
-                                     sizeof(cx_rsa_4096_private_key_t),
+                                     (unsigned char *) key,
+                                     len,
                                      G_gpg_vstate.work.io_buffer + G_gpg_vstate.io_offset,
                                      &len));
             gpg_io_inserted(len);
@@ -853,7 +900,7 @@ int gpg_apdu_get_key_data(unsigned int ref) {
             sw = SW_OK;
             break;
 
-        case KEY_ID_ECDH:  // ECC
+        case KEY_ID_ECDH:
         case KEY_ID_ECDSA:
         case KEY_ID_EDDSA:
             // insert pubkey
@@ -889,12 +936,14 @@ end:
 // cmd   TID API COMPAT len_pub len_priv priv
 // resp  -
 int gpg_apdu_put_key_data(unsigned int ref) {
-    cx_aes_key_t keyenc;
-    gpg_key_t *keygpg;
-    unsigned int len;
-    unsigned int offset;
+    cx_aes_key_t keyenc = {0};
+    gpg_key_t *keygpg = NULL;
+    unsigned int len = 0;
+    cx_rsa_private_key_t *key = NULL;
+    unsigned int offset = 0;
     cx_err_t error = CX_INTERNAL_ERROR;
     int sw = SW_UNKNOWN;
+    unsigned int ksz = 0;
 
     sw = gpg_init_keyenc(&keyenc);
     if (sw != SW_OK) {
@@ -920,7 +969,6 @@ int gpg_apdu_put_key_data(unsigned int ref) {
     gpg_io_fetch_u32();
 
     switch (keygpg->attributes.value[0]) {
-        // RSA
         case KEY_ID_RSA:
             // insert pubkey
             len = gpg_io_fetch_u32();
@@ -937,26 +985,51 @@ int gpg_apdu_put_key_data(unsigned int ref) {
                 break;
             }
             offset = G_gpg_vstate.io_offset;
+            ksz = U2BE(G_gpg_vstate.mse_dec->attributes.value, 1) >> 3;
+            switch (ksz) {
+                case 2048 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa2048;
+                    len = sizeof(cx_rsa_2048_private_key_t);
+                    break;
+                case 3072 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa3072;
+                    len = sizeof(cx_rsa_3072_private_key_t);
+                    break;
+#ifdef WITH_SUPPORT_RSA4096
+                case 4096 / 8:
+                    key = (cx_rsa_private_key_t *) &keygpg->priv_key.rsa4096;
+                    len = sizeof(cx_rsa_4096_private_key_t);
+                    break;
+#endif
+            }
+
+            if ((key == NULL) || (key->size != ksz)) {
+                sw = SW_CONDITIONS_NOT_SATISFIED;
+                break;
+            }
+            if (len != GPG_IO_BUFFER_LENGTH) {
+                sw = SW_CONDITIONS_NOT_SATISFIED;
+                break;
+            }
+
+            PRINTF("[DATA] - put_key_data: key len: %d\n", len);
             gpg_io_discard(0);
-            len = GPG_IO_BUFFER_LENGTH;
             CX_CHECK(cx_aes_no_throw(&keyenc,
                                      CX_DECRYPT | CX_CHAIN_CBC | CX_PAD_ISO9797M2 | CX_LAST,
                                      G_gpg_vstate.work.io_buffer + offset,
                                      len,
                                      G_gpg_vstate.work.io_buffer,
-                                     &len));
-            if (len != sizeof(cx_rsa_4096_private_key_t)) {
+                                     &ksz));
+            if (len != ksz) {
+                PRINTF("[DATA] - put_key_data: Wrong aes output len: %d / %d\n", len, ksz);
                 sw = SW_WRONG_DATA;
                 break;
             }
-            nvm_write((unsigned char *) &keygpg->priv_key.rsa4096,
-                      G_gpg_vstate.work.io_buffer,
-                      len);
+            nvm_write((unsigned char *) key, G_gpg_vstate.work.io_buffer, len);
             sw = SW_OK;
             break;
 
-        // ECC
-        case KEY_ID_ECDH:  // ECC
+        case KEY_ID_ECDH:
         case KEY_ID_ECDSA:
         case KEY_ID_EDDSA:
             // insert pubkey
diff --git a/src/gpg_gen.c b/src/gpg_gen.c
index 17f4864..9c85e3f 100644
--- a/src/gpg_gen.c
+++ b/src/gpg_gen.c
@@ -93,9 +93,11 @@ static int gpg_gen_rsa_kyey(gpg_key_t *keygpg, uint8_t *name) {
         case 3072 / 8:
             pkey_size = sizeof(cx_rsa_3072_private_key_t);
             break;
+#ifdef WITH_SUPPORT_RSA4096
         case 4096 / 8:
             pkey_size = sizeof(cx_rsa_4096_private_key_t);
             break;
+#endif
         default:
             break;
     }
@@ -164,12 +166,16 @@ static int gpg_read_rsa_kyey(gpg_key_t *keygpg) {
             }
             gpg_io_insert_tlv(0x81, ksz, (unsigned char *) &keygpg->priv_key.rsa3072.n);
             break;
+#ifdef WITH_SUPPORT_RSA4096
         case 4096 / 8:
             if (keygpg->priv_key.rsa4096.size == 0) {
                 return SW_REFERENCED_DATA_NOT_FOUND;
             }
             gpg_io_insert_tlv(0x81, ksz, (unsigned char *) &keygpg->priv_key.rsa4096.n);
             break;
+#endif
+        default:
+            return SW_REFERENCED_DATA_NOT_FOUND;
     }
     gpg_io_insert_tlv(0x82, 4, keygpg->pub_key.rsa);
 
@@ -224,7 +230,7 @@ static int gpg_read_ecc_kyey(gpg_key_t *keygpg) {
     uint32_t i, len;
     cx_err_t error = CX_INTERNAL_ERROR;
 
-    if (keygpg->pub_key.ecfp256.W_len == 0) {
+    if (keygpg->pub_key.ecfp.W_len == 0) {
         return SW_REFERENCED_DATA_NOT_FOUND;
     }
     gpg_io_discard(1);
@@ -232,23 +238,23 @@ static int gpg_read_ecc_kyey(gpg_key_t *keygpg) {
     curve = gpg_oid2curve(keygpg->attributes.value + 1, keygpg->attributes.length - 1);
     if (curve == CX_CURVE_Ed25519) {
         memmove(G_gpg_vstate.work.io_buffer + 128,
-                keygpg->pub_key.ecfp256.W,
-                keygpg->pub_key.ecfp256.W_len);
+                keygpg->pub_key.ecfp.W,
+                keygpg->pub_key.ecfp.W_len);
         CX_CHECK(cx_edwards_compress_point_no_throw(CX_CURVE_Ed25519,
                                                     G_gpg_vstate.work.io_buffer + 128,
                                                     65));
         gpg_io_insert_tlv(0x86, 32,
                           G_gpg_vstate.work.io_buffer + 129);  // 129: discard 02
     } else if (curve == CX_CURVE_Curve25519) {
-        len = keygpg->pub_key.ecfp256.W_len - 1;
+        len = keygpg->pub_key.ecfp.W_len - 1;
         for (i = 0; i <= len; i++) {
-            G_gpg_vstate.work.io_buffer[128 + i] = keygpg->pub_key.ecfp256.W[len - i];
+            G_gpg_vstate.work.io_buffer[128 + i] = keygpg->pub_key.ecfp.W[len - i];
         }
         gpg_io_insert_tlv(0x86, 32, G_gpg_vstate.work.io_buffer + 128);
     } else {
         gpg_io_insert_tlv(0x86,
-                          keygpg->pub_key.ecfp256.W_len,
-                          (unsigned char *) &keygpg->pub_key.ecfp256.W);
+                          keygpg->pub_key.ecfp.W_len,
+                          (unsigned char *) &keygpg->pub_key.ecfp.W);
     }
     return SW_OK;
 
@@ -304,7 +310,6 @@ int gpg_apdu_gen() {
         case GEN_ASYM_KEY_SEED:
 
             if (keygpg->attributes.value[0] == KEY_ID_RSA) {
-                // RSA
                 sw = gpg_gen_rsa_kyey(keygpg, name);
                 if (sw != SW_OK) {
                     break;
@@ -312,7 +317,6 @@ int gpg_apdu_gen() {
             } else if ((keygpg->attributes.value[0] == KEY_ID_ECDH) ||
                        (keygpg->attributes.value[0] == KEY_ID_ECDSA) ||
                        (keygpg->attributes.value[0] == KEY_ID_EDDSA)) {
-                // ECC
                 sw = gpg_gen_ecc_kyey(keygpg, name);
                 if (sw != SW_OK) {
                     break;
@@ -323,12 +327,10 @@ int gpg_apdu_gen() {
         // --- read pubkey ---
         case READ_ASYM_KEY:
             if (keygpg->attributes.value[0] == KEY_ID_RSA) {
-                // read RSA
                 sw = gpg_read_rsa_kyey(keygpg);
             } else if ((keygpg->attributes.value[0] == KEY_ID_ECDH) ||
                        (keygpg->attributes.value[0] == KEY_ID_ECDSA) ||
                        (keygpg->attributes.value[0] == KEY_ID_EDDSA)) {
-                // read ECC
                 sw = gpg_read_ecc_kyey(keygpg);
             }
             l = G_gpg_vstate.io_length;
diff --git a/src/gpg_init.c b/src/gpg_init.c
index 43cbfd5..1cd4185 100644
--- a/src/gpg_init.c
+++ b/src/gpg_init.c
@@ -56,7 +56,7 @@ const unsigned char C_OID_BRAINPOOL256T1[9] = {
 const unsigned char C_OID_BRAINPOOL256R1[9] = {
   0x2B, 0x24, 0x03, 0x03, 0x02, 0x08, 0x01, 0x01, 0x08
 };
-//brainpool 284r1: 1.3.36.3.3.2.8.1.1.11
+//brainpool 384r1: 1.3.36.3.3.2.8.1.1.11
 const unsigned char C_OID_BRAINPOOL384R1[9] = {
    0x2B, 0x24, 0x03, 0x03, 0x02, 0x08, 0x01, 0x01, 0x0B
 };
@@ -66,7 +66,7 @@ const unsigned char C_OID_BRAINPOOL512R1[9] = {
 };
 */
 
-// Ed25519/curve25519: 1.3.6.1.4.1.11591.15.1
+// "twisted" curve25519 for Ed25519: 1.3.6.1.4.1.11591.15.1
 const unsigned char C_OID_Ed25519[9] = {
     0x2B,
     0x06,
@@ -79,7 +79,7 @@ const unsigned char C_OID_Ed25519[9] = {
     0x01,
 };
 
-// Ed25519/curve25519: 1.3.6.1.4.1.11591.15.1
+// "Montgomery" curve25519 for X25519: 1.3.6.1.4.1.11591.1.5.1
 const unsigned char C_OID_cv25519[10] = {
     0x2B,
     0x06,
diff --git a/src/gpg_pso.c b/src/gpg_pso.c
index 7d92b8f..ed4fea5 100644
--- a/src/gpg_pso.c
+++ b/src/gpg_pso.c
@@ -65,7 +65,6 @@ static void gpg_pso_reset_PW1() {
 }
 
 static int gpg_sign(gpg_key_t *sigkey) {
-    // --- RSA
     cx_err_t error = CX_INTERNAL_ERROR;
     if (sigkey->attributes.value[0] == KEY_ID_RSA) {
         cx_rsa_private_key_t *key = NULL;
@@ -78,9 +77,11 @@ static int gpg_sign(gpg_key_t *sigkey) {
             case 3072 / 8:
                 key = (cx_rsa_private_key_t *) &sigkey->priv_key.rsa3072;
                 break;
+#ifdef WITH_SUPPORT_RSA4096
             case 4096 / 8:
                 key = (cx_rsa_private_key_t *) &sigkey->priv_key.rsa4096;
                 break;
+#endif
             default:
                 break;
         }
@@ -113,7 +114,6 @@ static int gpg_sign(gpg_key_t *sigkey) {
         gpg_pso_reset_PW1();
         return SW_OK;
     }
-    // --- ECDSA/EdDSA
     if ((sigkey->attributes.value[0] == KEY_ID_ECDSA) ||
         (sigkey->attributes.value[0] == KEY_ID_EDDSA)) {
         cx_ecfp_private_key_t *key;
@@ -223,7 +223,7 @@ int gpg_apdu_pso() {
         // --- PSO:ENC ---
         case PSO_ENC: {
             unsigned int msg_len;
-            cx_aes_key_t *key;
+            cx_aes_key_t *key = NULL;
             key = &G_gpg_vstate.kslot->AES_dec;
             if (!(key->size != 16)) {
                 return SW_CONDITIONS_NOT_SATISFIED;
@@ -252,7 +252,7 @@ int gpg_apdu_pso() {
             switch (pad_byte) {
                 // --- PSO:DEC:RSA
                 case 0x00: {
-                    cx_rsa_private_key_t *key;
+                    cx_rsa_private_key_t *key = NULL;
                     if (G_gpg_vstate.mse_dec->attributes.value[0] != KEY_ID_RSA) {
                         return SW_CONDITIONS_NOT_SATISFIED;
                     }
@@ -265,9 +265,11 @@ int gpg_apdu_pso() {
                         case 3072 / 8:
                             key = (cx_rsa_private_key_t *) &G_gpg_vstate.mse_dec->priv_key.rsa3072;
                             break;
+#ifdef WITH_SUPPORT_RSA4096
                         case 4096 / 8:
                             key = (cx_rsa_private_key_t *) &G_gpg_vstate.mse_dec->priv_key.rsa4096;
                             break;
+#endif
                     }
 
                     if ((key == NULL) || (key->size != ksz)) {
diff --git a/src/gpg_types.h b/src/gpg_types.h
index 34a4ba4..41e0dd8 100644
--- a/src/gpg_types.h
+++ b/src/gpg_types.h
@@ -84,8 +84,9 @@ typedef struct gpg_key_s {
         cx_rsa_private_key_t rsa;
         cx_rsa_2048_private_key_t rsa2048;
         cx_rsa_3072_private_key_t rsa3072;
+#ifdef WITH_SUPPORT_RSA4096
         cx_rsa_4096_private_key_t rsa4096;
-
+#endif
         cx_ecfp_private_key_t ecfp;
         cx_ecfp_256_private_key_t ecfp256;
         cx_ecfp_384_private_key_t ecfp384;
@@ -215,13 +216,17 @@ struct gpg_v_state_s {
                 cx_rsa_public_key_t public;
                 cx_rsa_2048_public_key_t public2048;
                 cx_rsa_3072_public_key_t public3072;
+#ifdef WITH_SUPPORT_RSA4096
                 cx_rsa_4096_public_key_t public4096;
+#endif
             };
             union {
                 cx_rsa_private_key_t private;
                 cx_rsa_2048_private_key_t private2048;
                 cx_rsa_3072_private_key_t private3072;
+#ifdef WITH_SUPPORT_RSA4096
                 cx_rsa_4096_private_key_t private4096;
+#endif
             };
         } rsa;
 
diff --git a/src/gpg_ux.h b/src/gpg_ux.h
index 207643d..fc7a63d 100644
--- a/src/gpg_ux.h
+++ b/src/gpg_ux.h
@@ -29,8 +29,7 @@
 #define LABEL_RSA2048   "RSA 2048"
 #define LABEL_RSA3072   "RSA 3072"
 #define LABEL_RSA4096   "RSA 4096"
-#define LABEL_NISTP256  "NIST P256"
-#define LABEL_SECP256K1 "SECP 256K1"
+#define LABEL_SECP256R1 "SECP 256R1"
 #define LABEL_Ed25519   "Ed25519"
 
 void ui_CCID_reset(void);
diff --git a/src/gpg_ux_nanos.c b/src/gpg_ux_nanos.c
index abfec68..9dbdc7f 100644
--- a/src/gpg_ux_nanos.c
+++ b/src/gpg_ux_nanos.c
@@ -536,8 +536,10 @@ const ux_menu_entry_t ui_menu_tmpl_key[] = {
 const ux_menu_entry_t ui_menu_tmpl_type[] = {
     {NULL, ui_menu_tmpl_type_action, 2048, NULL, LABEL_RSA2048, NULL, 0, 0},
     {NULL, ui_menu_tmpl_type_action, 3072, NULL, LABEL_RSA3072, NULL, 0, 0},
+#ifdef WITH_SUPPORT_RSA4096
     {NULL, ui_menu_tmpl_type_action, 4096, NULL, LABEL_RSA4096, NULL, 0, 0},
-    {NULL, ui_menu_tmpl_type_action, CX_CURVE_SECP256R1, NULL, LABEL_NISTP256, NULL, 0, 0},
+#endif
+    {NULL, ui_menu_tmpl_type_action, CX_CURVE_SECP256R1, NULL, LABEL_SECP256R1, NULL, 0, 0},
     {NULL, ui_menu_tmpl_type_action, CX_CURVE_Ed25519, NULL, LABEL_Ed25519, NULL, 0, 0},
     {ui_menu_template, NULL, 0, &C_icon_back, "Back", NULL, 61, 40},
     UX_MENU_END};
@@ -570,12 +572,13 @@ const bagl_element_t *ui_menu_template_predisplay(const ux_menu_entry_t *entry,
                 case 3072:
                     snprintf(G_gpg_vstate.menu, sizeof(G_gpg_vstate.menu), " %s", LABEL_RSA3072);
                     break;
+#ifdef WITH_SUPPORT_RSA4096
                 case 4096:
                     snprintf(G_gpg_vstate.menu, sizeof(G_gpg_vstate.menu), " %s", LABEL_RSA4096);
                     break;
-
+#endif
                 case CX_CURVE_SECP256R1:
-                    snprintf(G_gpg_vstate.menu, sizeof(G_gpg_vstate.menu), " %s", LABEL_NISTP256);
+                    snprintf(G_gpg_vstate.menu, sizeof(G_gpg_vstate.menu), " %s", LABEL_SECP256R1);
                     break;
                 case CX_CURVE_Ed25519:
                     snprintf(G_gpg_vstate.menu, sizeof(G_gpg_vstate.menu), " %s", LABEL_Ed25519);
@@ -605,7 +608,9 @@ void ui_menu_tmpl_set_action(unsigned int value) {
     switch (G_gpg_vstate.ux_type) {
         case 2048:
         case 3072:
+#ifdef WITH_SUPPORT_RSA4096
         case 4096:
+#endif
             attributes.value[0] = KEY_ID_RSA;
             U2BE_ENCODE(attributes.value, 1, G_gpg_vstate.ux_type);
             attributes.value[3] = 0x00;
@@ -621,7 +626,7 @@ void ui_menu_tmpl_set_action(unsigned int value) {
                 attributes.value[0] = KEY_ID_ECDSA;
             }
             oid = gpg_curve2oid(G_gpg_vstate.ux_type, &oid_len);
-            memmove(attributes.value + 1, oid, sizeof(oid_len));
+            memmove(attributes.value + 1, oid, oid_len);
             attributes.length = 1 + oid_len;
             break;
 
diff --git a/src/gpg_ux_nanox.c b/src/gpg_ux_nanox.c
index 909f2b7..efdaf45 100644
--- a/src/gpg_ux_nanox.c
+++ b/src/gpg_ux_nanox.c
@@ -474,13 +474,17 @@ void tmpl_key_selector(unsigned int idx) {
 
 const char *const tmpl_type_getter_values[] = {LABEL_RSA2048,
                                                LABEL_RSA3072,
+#ifdef WITH_SUPPORT_RSA4096
                                                LABEL_RSA4096,
-                                               LABEL_SECP256K1,
+#endif
+                                               LABEL_SECP256R1,
                                                LABEL_Ed25519};
 
 const unsigned int tmpl_type_getter_values_map[] = {2048,
                                                     3072,
+#ifdef WITH_SUPPORT_RSA4096
                                                     4096,
+#endif
                                                     CX_CURVE_SECP256R1,
                                                     CX_CURVE_Ed25519};
 
@@ -567,11 +571,13 @@ void ui_menu_template_predisplay() {
         case 3072:
             snprintf(KEY_TYPE, sizeof(KEY_TYPE), " %s", LABEL_RSA3072);
             break;
+#ifdef WITH_SUPPORT_RSA4096
         case 4096:
             snprintf(KEY_TYPE, sizeof(KEY_TYPE), " %s", LABEL_RSA4096);
             break;
+#endif
         case CX_CURVE_SECP256R1:
-            snprintf(KEY_TYPE, sizeof(KEY_TYPE), " %s", LABEL_SECP256K1);
+            snprintf(KEY_TYPE, sizeof(KEY_TYPE), " %s", LABEL_SECP256R1);
             break;
         case CX_CURVE_Ed25519:
             snprintf(KEY_TYPE, sizeof(KEY_TYPE), " %s", LABEL_Ed25519);
@@ -590,14 +596,16 @@ void ui_menu_tmpl_set_action(unsigned int value) {
     UNUSED(value);
     LV(attributes, GPG_KEY_ATTRIBUTES_LENGTH);
     gpg_key_t *dest = NULL;
-    const unsigned char *oid;
+    const unsigned char *oid = NULL;
     unsigned int oid_len;
 
     memset(&attributes, 0, sizeof(attributes));
     switch (G_gpg_vstate.ux_type) {
         case 2048:
         case 3072:
+#ifdef WITH_SUPPORT_RSA4096
         case 4096:
+#endif
             attributes.value[0] = KEY_ID_RSA;
             U2BE_ENCODE(attributes.value, 1, G_gpg_vstate.ux_type);
             attributes.value[3] = 0x00;
@@ -607,13 +615,16 @@ void ui_menu_tmpl_set_action(unsigned int value) {
             break;
 
         case CX_CURVE_SECP256R1:
+            oid = gpg_curve2oid(G_gpg_vstate.ux_type, &oid_len);
+            if (oid == NULL) {
+                break;
+            }
             if (G_gpg_vstate.ux_key == 2) {
                 attributes.value[0] = KEY_ID_ECDH;
             } else {
                 attributes.value[0] = KEY_ID_ECDSA;
             }
-            oid = gpg_curve2oid(G_gpg_vstate.ux_type, &oid_len);
-            memmove(attributes.value + 1, oid, sizeof(oid_len));
+            memmove(attributes.value + 1, oid, oid_len);
             attributes.length = 1 + oid_len;
             break;
 
diff --git a/src/gpg_ux_nbgl.c b/src/gpg_ux_nbgl.c
index bf21e71..b118995 100644
--- a/src/gpg_ux_nbgl.c
+++ b/src/gpg_ux_nbgl.c
@@ -204,16 +204,20 @@ static const char* const keyNameTexts[] = {LABEL_SIG, LABEL_DEC, LABEL_AUT};
 enum {
     TOKEN_TYPE_RSA2048 = FIRST_USER_TOKEN,
     TOKEN_TYPE_RSA3072,
+#ifdef WITH_SUPPORT_RSA4096
     TOKEN_TYPE_RSA4096,
-    TOKEN_TYPE_SECP256K1,
+#endif
+    TOKEN_TYPE_SECP256R1,
     TOKEN_TYPE_Ed25519,
     TOKEN_TYPE_BACK
 };
 
 static const char* const keyTypeTexts[] = {LABEL_RSA2048,
                                            LABEL_RSA3072,
+#ifdef WITH_SUPPORT_RSA4096
                                            LABEL_RSA4096,
-                                           LABEL_SECP256K1,
+#endif
+                                           LABEL_SECP256R1,
                                            LABEL_Ed25519};
 
 static uint32_t _getKeyType(const uint8_t key) {
@@ -237,7 +241,6 @@ static uint32_t _getKeyType(const uint8_t key) {
     }
     switch (attributes[0]) {
         case KEY_ID_RSA:
-            // RSA
             tag = U2BE(attributes, 1);
             switch (tag) {
                 case 2048:
@@ -246,16 +249,18 @@ static uint32_t _getKeyType(const uint8_t key) {
                 case 3072:
                     token = TOKEN_TYPE_RSA3072;
                     break;
+#ifdef WITH_SUPPORT_RSA4096
                 case 4096:
                     token = TOKEN_TYPE_RSA4096;
                     break;
+#endif
             }
             break;
         case KEY_ID_ECDH:
             tag = attributes[1];
             switch (tag) {
                 case 0x2A:
-                    token = TOKEN_TYPE_SECP256K1;
+                    token = TOKEN_TYPE_SECP256R1;
                     break;
                 case 0x2B:
                     token = TOKEN_TYPE_Ed25519;
@@ -263,7 +268,7 @@ static uint32_t _getKeyType(const uint8_t key) {
             }
             break;
         case KEY_ID_ECDSA:
-            token = TOKEN_TYPE_SECP256K1;
+            token = TOKEN_TYPE_SECP256R1;
             break;
         case KEY_ID_EDDSA:
             token = TOKEN_TYPE_Ed25519;
@@ -285,7 +290,9 @@ static void template_key_cb(int token, uint8_t index) {
         switch (key_type) {
             case TOKEN_TYPE_RSA2048:
             case TOKEN_TYPE_RSA3072:
+#ifdef WITH_SUPPORT_RSA4096
             case TOKEN_TYPE_RSA4096:
+#endif
                 switch (key_type) {
                     case TOKEN_TYPE_RSA2048:
                         size = 2048;
@@ -293,9 +300,11 @@ static void template_key_cb(int token, uint8_t index) {
                     case TOKEN_TYPE_RSA3072:
                         size = 3072;
                         break;
+#ifdef WITH_SUPPORT_RSA4096
                     case TOKEN_TYPE_RSA4096:
                         size = 4096;
                         break;
+#endif
                 }
                 attributes.value[0] = KEY_ID_RSA;
                 U2BE_ENCODE(attributes.value, 1, size);
@@ -306,7 +315,7 @@ static void template_key_cb(int token, uint8_t index) {
                 oid_len = 6;
                 break;
 
-            case TOKEN_TYPE_SECP256K1:
+            case TOKEN_TYPE_SECP256R1:
                 if (G_gpg_vstate.ux_key == TOKEN_TEMPLATE_DEC) {
                     attributes.value[0] = KEY_ID_ECDH;
                 } else {
@@ -395,11 +404,13 @@ static void ui_settings_template(void) {
             case TOKEN_TYPE_RSA3072:
                 bar.subText = PIC(LABEL_RSA3072);
                 break;
+#ifdef WITH_SUPPORT_RSA4096
             case TOKEN_TYPE_RSA4096:
                 bar.subText = PIC(LABEL_RSA4096);
                 break;
-            case TOKEN_TYPE_SECP256K1:
-                bar.subText = PIC(LABEL_SECP256K1);
+#endif
+            case TOKEN_TYPE_SECP256R1:
+                bar.subText = PIC(LABEL_SECP256R1);
                 break;
             case TOKEN_TYPE_Ed25519:
                 bar.subText = PIC(LABEL_Ed25519);
diff --git a/tests/snapshots/nanos/test_menu_settings/00006.png b/tests/snapshots/nanos/test_menu_settings/00006.png
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diff --git a/tests/snapshots/stax/test_menu_settings/00002.png b/tests/snapshots/stax/test_menu_settings/00002.png
index 8c024ec..a74d714 100644
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diff --git a/tests/snapshots/stax/test_menu_settings/00003.png b/tests/snapshots/stax/test_menu_settings/00003.png
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diff --git a/tests/test_seed.py b/tests/test_seed.py
index cf15194..987bf67 100644
--- a/tests/test_seed.py
+++ b/tests/test_seed.py
@@ -44,7 +44,7 @@ def _gen_key(client: CommandSender, template: str):
     [
         "rsa2048",
         pytest.param("rsa3072", marks=pytest.mark.skipif("--full" not in sys.argv, reason="skipping long test")),
-        pytest.param("rsa4096", marks=pytest.mark.skipif("--full" not in sys.argv, reason="skipping long test")),
+        # pytest.param("rsa4096", marks=pytest.mark.skipif("--full" not in sys.argv, reason="skipping long test")),
         "nistp256",  # ECDSA
         "ed25519",   # EdDSA
         # "cv25519",   # ECDH, SDK returns CX_EC_INVALID_CURVE
diff --git a/tests/utils.py b/tests/utils.py
index b89303e..5d5e770 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -22,7 +22,7 @@ ROOT_SCREENSHOT_PATH = Path(__file__).parent.resolve()
 KEY_TEMPLATES = {
     "rsa2048" : "010800002001",
     "rsa3072" : "010C00002001",
-    "rsa4096" : "011000002001",
+    # "rsa4096" : "011000002001", Not supported yet
     "nistp256": "132A8648CE3D030107",
     "ed25519" : "162B06010401DA470F01",
     "cv25519" : "122B060104019755010501"