They also have anti-rollback measures that prevent you from
flashing older firmware files, which can be a hassle when your favorite mod doesn't support the newest Android version.
Not exact matches
You can not
flash the new 5.1 LMY47O on any
older Lollipop or KitKat
firmwares except for the LRX22G Android 5.0.2 build.
Root must be ensured because the internal system must be unlocked — the new
firmware must access and modify the
old ROM and the custom recovery image must be used on the
flashing process (I recommend you to use the latest version of CWM or TWRP recovery if that's possible).
The security updates are here for both the latest and
older Samsung handsets on today's daily
firmware list, but make sure that you went through our tutorial before attempting to download and
flash the
firmware manually onto your smartphones.