I have just managed to revert back to my previously backed up rom precisely the way it was when i made the backup (Nandroid backup) with call logs and sms after hopelessly trying to switch from my Leedroid custom rom to an AOKP based rom..Fastboot boot boot.img and Flash GUI were very handy..Now with these methods in hand..will now try to switch to Carbon JB 4.2.2 aokp based rom.
Guys please confirm these steps are correct:
1. flash the Carbon rom "boot.img" via Flash GUI.
2.boot to bootloader, fastboot-usb flash the same "boot.img" to ensure it writes correctly into the boot partition.
3. boot into recovery, CWM.
4.Flash in the New Carbon Rom via "install via usb">>"choose from usb">>select the carbon-rom.zip