I want to go back to an old rootable firmware so I can back up its TA partition before unlocking its bootloader. My question is, can I just flash any .257 firmware(regardless of customization number)? Like the one in here -> http://forum.xda-developers.com/show...53&postcount=3
Or can anybody link me to the same Singapore customization as mine, the old rootable firmware.
Thanks all in advance.