If you try to decompile directly it won't work(not atleast for Core but only for some devices), so here we go
Things you will need:
Root Browser (or something similar)
Make sure you have Java SDK installed in pc.
Notepad++ or a decent xml editor
1)Copy these two apks' in sd card or somewhere you can access it from pc.
2)Copy these two apk in your computer system
3)Extract APKTOOL and Script until you get "aapt.exe", "apktool.bat", "apktool.jar" .
4) Make a new folder anywhere in your comp. and paste these
(vi) You also need to paste "cmd.exe", use Run command to find it and paste it in the folder...
(i) Open cmd.exe, it should show the location of the current folder
apktool if framework-res.apk
apktool d SystemUI.apk
i) Ensure you have not "CUT" but "COPIED" the apks from the folder, this can HARD BRICK your phone !
ii) Decompiling apks' takes time according to one's pc's speed, have patience.
iii) Please do not try to decompile or play with framework-res.apk in anyway if you are not experienced !
iv)And as thcoreguy says
No nuclear war is going on!
Checked and tested:
*I have used win7 64-bit SONY laptop
*Worked for I8262 and SHOULD work for I8260 (the files)
@Brut.all for making apktool
connor.tumbleson for uploading files
@thecoreguy for making root tutorial
People who made XDA forum possible
Samsung for making Core
You for reading this
Me(ofcourse) for creating this
Press Thanks if you also achieved to decompile this!