diff --git a/frontend/apps/filemanager/filemanagermenu.lua b/frontend/apps/filemanager/filemanagermenu.lua
index f6e881541..f36dc4dc8 100644
--- a/frontend/apps/filemanager/filemanagermenu.lua
+++ b/frontend/apps/filemanager/filemanagermenu.lua
@@ -97,67 +97,11 @@ function FileManagerMenu:setUpdateItemTable()
         end
     })
 
-    -- TODO: refactor out redundant code between reader menu and filemanager menu
-    table.insert(self.tab_item_table.setting, {
-        text = _("Font size"),
-        sub_item_table = {
-            {
-                text = _("Auto"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi == nil
-                end,
-                callback = function() Screen:setDPI() end
-            },
-            {
-                text = _("Small"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi <= 140
-                end,
-                callback = function() Screen:setDPI(120) end
-            },
-            {
-                text = _("Medium"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi > 140 and dpi <= 200
-                end,
-                callback = function() Screen:setDPI(160) end
-            },
-            {
-                text = _("Large"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi > 200
-                end,
-                callback = function() Screen:setDPI(240) end
-            },
-        }
-    })
+    table.insert(self.tab_item_table.setting, Screen:getDPIMenuTable())
     table.insert(self.tab_item_table.setting, Language:getLangMenuTable())
 
     -- info tab
-    table.insert(self.tab_item_table.info, {
-        text = _("Check update"),
-        callback = function()
-            local ota_version = OTAManager:checkUpdate()
-            if ota_version == 0 then
-                UIManager:show(InfoMessage:new{
-                    text = _("Your koreader is updated."),
-                })
-            elseif ota_version == nil then
-                UIManager:show(InfoMessage:new{
-                    text = _("OTA server is not available."),
-                })
-            elseif ota_version then
-                UIManager:show(ConfirmBox:new{
-                    text = _("Do you want to update to version ")..ota_version.."?",
-                    ok_callback = function() OTAManager:zsync() end
-                })
-            end
-        end
-    })
+    table.insert(self.tab_item_table.info, OTAManager:getOTAMenuTable())
     table.insert(self.tab_item_table.info, {
         text = _("Version"),
         callback = function()
diff --git a/frontend/apps/reader/modules/readermenu.lua b/frontend/apps/reader/modules/readermenu.lua
index f0e3a1dcd..ba0d3252e 100644
--- a/frontend/apps/reader/modules/readermenu.lua
+++ b/frontend/apps/reader/modules/readermenu.lua
@@ -89,43 +89,7 @@ function ReaderMenu:setUpdateItemTable()
             G_reader_settings:saveSetting("night_mode", not night_mode)
         end
     })
-    table.insert(self.tab_item_table.setting, {
-        text = _("Font size"),
-        sub_item_table = {
-            {
-                text = _("Auto"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi == nil
-                end,
-                callback = function() Screen:setDPI() end
-            },
-            {
-                text = _("Small"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi <= 140
-                end,
-                callback = function() Screen:setDPI(120) end
-            },
-            {
-                text = _("Medium"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi > 140 and dpi <= 200
-                end,
-                callback = function() Screen:setDPI(160) end
-            },
-            {
-                text = _("Large"),
-                checked_func = function()
-                    local dpi = G_reader_settings:readSetting("screen_dpi")
-                    return dpi and dpi > 200
-                end,
-                callback = function() Screen:setDPI(240) end
-            },
-        }
-    })
+    table.insert(self.tab_item_table.setting, Screen:getDPIMenuTable())
     table.insert(self.tab_item_table.setting, self:genRefreshRateMenu())
     table.insert(self.tab_item_table.setting, {
         text = _("Show advanced options"),
@@ -138,26 +102,7 @@ function ReaderMenu:setUpdateItemTable()
     table.insert(self.tab_item_table.setting, Language:getLangMenuTable())
 
     -- info tab
-    table.insert(self.tab_item_table.info, {
-        text = _("Check update"),
-        callback = function()
-            local ota_version = OTAManager:checkUpdate()
-            if ota_version == 0 then
-                UIManager:show(InfoMessage:new{
-                    text = _("Your koreader is updated."),
-                })
-            elseif ota_version == nil then
-                UIManager:show(InfoMessage:new{
-                    text = _("OTA server is not available."),
-                })
-            elseif ota_version then
-                UIManager:show(ConfirmBox:new{
-                    text = _("Do you want to update to version ")..ota_version.."?",
-                    ok_callback = function() OTAManager:zsync() end
-                })
-            end
-        end
-    })
+    table.insert(self.tab_item_table.info, OTAManager:getOTAMenuTable())
     table.insert(self.tab_item_table.info, {
         text = _("Version"),
         callback = function()
diff --git a/frontend/ui/device/screen.lua b/frontend/ui/device/screen.lua
index b3f3ae4c2..b87ffd790 100644
--- a/frontend/ui/device/screen.lua
+++ b/frontend/ui/device/screen.lua
@@ -1,7 +1,8 @@
 local Blitbuffer = require("ffi/blitbuffer")
 local Geom = require("ui/geometry")
-local DEBUG = require("dbg")
 local util = require("ffi/util")
+local DEBUG = require("dbg")
+local _ = require("gettext")
 
 -- Blitbuffer
 -- einkfb
@@ -236,5 +237,45 @@ function Screen:restoreFromBB(bb)
     end
 end
 
+function Screen:getDPIMenuTable()
+    return {
+        text = _("Font size"),
+        sub_item_table = {
+            {
+                text = _("Auto"),
+                checked_func = function()
+                    local dpi = G_reader_settings:readSetting("screen_dpi")
+                    return dpi == nil
+                end,
+                callback = function() Screen:setDPI() end
+            },
+            {
+                text = _("Small"),
+                checked_func = function()
+                    local dpi = G_reader_settings:readSetting("screen_dpi")
+                    return dpi and dpi <= 140
+                end,
+                callback = function() Screen:setDPI(120) end
+            },
+            {
+                text = _("Medium"),
+                checked_func = function()
+                    local dpi = G_reader_settings:readSetting("screen_dpi")
+                    return dpi and dpi > 140 and dpi <= 200
+                end,
+                callback = function() Screen:setDPI(160) end
+            },
+            {
+                text = _("Large"),
+                checked_func = function()
+                    local dpi = G_reader_settings:readSetting("screen_dpi")
+                    return dpi and dpi > 200
+                end,
+                callback = function() Screen:setDPI(240) end
+            },
+        }
+    }
+end
+
 return Screen
 
diff --git a/frontend/ui/otamanager.lua b/frontend/ui/otamanager.lua
index c49edce50..4949affd5 100644
--- a/frontend/ui/otamanager.lua
+++ b/frontend/ui/otamanager.lua
@@ -1,5 +1,9 @@
+local InfoMessage = require("ui/widget/infomessage")
+local ConfirmBox = require("ui/widget/confirmbox")
+local UIManager = require("ui/uimanager")
 local Device = require("ui/device")
 local DEBUG = require("dbg")
+local _ = require("gettext")
 
 local OTAManager = {
     ota_server = "http://vislab.bjmu.edu.cn/apps/koreader/ota/",
@@ -78,11 +82,46 @@ end
 function OTAManager:zsync()
     if self:_buildLocalPackage() == 0 then
         return os.execute(string.format(
-        "./zsync -i %s -o %s -u %s %s &",
+        "./zsync -i %s -o %s -u %s %s",
         self.installed_package, self.updated_package,
         self.ota_server, "ota/" .. self:getZsyncFilename()
         ))
     end
 end
 
+function OTAManager:getOTAMenuTable()
+    return {
+        text = _("Check update"),
+        callback = function()
+            local ota_version = OTAManager:checkUpdate()
+            if ota_version == 0 then
+                UIManager:show(InfoMessage:new{
+                    text = _("Your koreader is updated."),
+                })
+            elseif ota_version == nil then
+                UIManager:show(InfoMessage:new{
+                    text = _("OTA server is not available."),
+                })
+            elseif ota_version then
+                UIManager:show(ConfirmBox:new{
+                    text = _("Do you want to update to version ")..ota_version.."?",
+                    ok_callback = function()
+                        UIManager:show(InfoMessage:new{
+                            text = _("Downloading may take several minutes..."),
+                            timeout = 3,
+                        })
+                        UIManager:scheduleIn(1, function()
+                            if OTAManager:zsync() == 0 then
+                                UIManager:show(InfoMessage:new{
+                                    text = _("Koreader will be updated on next restart."),
+                                })
+                            end
+                        end)
+                    end
+                })
+            end
+        end
+    }
+end
+
 return OTAManager
diff --git a/kobo/koreader.sh b/kobo/koreader.sh
index 68f28b7ce..451f838b6 100755
--- a/kobo/koreader.sh
+++ b/kobo/koreader.sh
@@ -8,7 +8,6 @@ KOREADER_DIR=/mnt/onboard/.kobo/koreader
 NEWUPDATE=${KOREADER_DIR}/ota/koreader.updated.tar
 if [ -f $NEWUPDATE ]; then
     # TODO: any graphic indication for the updating progress?
-	logmsg "Updating koreader . . ."
     cd /mnt/onboard/.kobo && tar xf $NEWUPDATE && rm $NEWUPDATE
 fi
 
diff --git a/koreader-base b/koreader-base
index 9d54e91f8..7bd19dfee 160000
--- a/koreader-base
+++ b/koreader-base
@@ -1 +1 @@
-Subproject commit 9d54e91f82090ad8d2a5f00f9db94b38c0afa4b7
+Subproject commit 7bd19dfee79f608911224c8195a08fb33c594d54
diff --git a/plugins/evernote.koplugin/main.lua b/plugins/evernote.koplugin/main.lua
index 629cd96dc..69a8aa6ba 100644
--- a/plugins/evernote.koplugin/main.lua
+++ b/plugins/evernote.koplugin/main.lua
@@ -89,7 +89,7 @@ function EvernoteExporter:addToMainMenu(tab_item_table)
                     end)
 
                     UIManager:show(InfoMessage:new{
-                        text = _("This may take several seconds..."),
+                        text = _("Exporting may take several seconds..."),
                         timeout = 1,
                     })
                 end
@@ -105,7 +105,7 @@ function EvernoteExporter:addToMainMenu(tab_item_table)
                     end)
 
                     UIManager:show(InfoMessage:new{
-                        text = _("This may take several minutes..."),
+                        text = _("Exporting may take several minutes..."),
                         timeout = 1,
                     })
                 end