diff --git a/ChangeLog.md b/ChangeLog.md
index 78ddb97..b445440 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -22,6 +22,9 @@
   * improved APEX compatibility
   * improved Android 10 compatibility
 
+* Installer, Patcher, SysTest
+  * also detect whether ROM has `FAKE_PACKAGE_SIGNATURE` permisson on self-patched ROMs
+
 * Google Package
   * fix GoogleCalendarSync on SDK 21 - 29 @Spongebob
   * fix installing swipe libraries in cases where `LatinIME` does not have it's libs linked to `/system`
diff --git a/CommonInstaller b/CommonInstaller
index 5cac0c9..e0fd6af 100644
--- a/CommonInstaller
+++ b/CommonInstaller
@@ -783,16 +783,6 @@ magisk_install_preinst () {
 		cp ${MODPATH}/system.prop ${TMPDIR}/system.prop
 	fi
 
-	if [ -f ${MODPATH}/system/framework/services.jar ]; then
-		print_info " << backing up patched services.jar"
-		cp ${MODPATH}/system/framework/services.jar ${TMPDIR}/services.jar
-	fi
-
-	if [ -f ${MODPATH}/system/framework/org.spoofing.apk ]; then
-		print_info " << backing up org.spoofing.apk"
-		cp ${MODPATH}/system/framework/org.spoofing.apk ${TMPDIR}/org.spoofing.apk
-	fi
-
 	if [ -d ${MODPATH}/logs ]; then
 		print_info " << backing up init.d script logs"
 		cp -r ${MODPATH}/logs ${TMPDIR}/logs
@@ -825,18 +815,6 @@ magisk_install_postinst () {
 		print_info " << restoring logcats"
 		cp -r ${TMPDIR}/logcats ${MODPATH}/logcats
 	fi
-
-	if [ -f ${TMPDIR}/services.jar ]; then
-		print_info " << restoring patched services.jar"
-		mkdir -p ${MODPATH}/system/framework
-		cp ${TMPDIR}/services.jar ${MODPATH}/system/framework/services.jar
-	fi
-
-	if [ -f ${TMPDIR}/org.spoofing.apk ]; then
-		print_info " << restoring org.spoofing.apk"
-		mkdir -p ${MODPATH}/system/framework
-		cp ${TMPDIR}/org.spoofing.apk ${MODPATH}/system/framework/org.spoofing.apk
-	fi
 }
 
 magisk_install_finish () {