but AOSP/CM based ROMs can be any version? as long as the bootloader is supported on that ROM? and worst case scenario, i can flash CM10.1.3 (Android 4.2.2)?
currently i'm on S3Rx 2.2, which uses Android 4.1.2. there would be no point in making a nandroid backup, since the bootloader would be updated and i could no longer use this ROM, correct?
i was going to follow this guide:
and then use this ROM:
flash the MJB bootloader via custom recovery following the above guide.
then flash the MJB modem via custom recovery with this guide:
reboot to phone (i did, not sure if necessary tho)
then reboot to recovery, flash new custom ROM.
a mistake i did was i only flashed the bootloader first. rebooted, then flashed new ROM. in which case i had no wifi and data. so i flashed the modem, rebooted, no wifi and data still. rebooted into recovery, factory reset, wipe cache, wipe dalvik, and everything worked fine after that.