Samsung Mega 6.3 Android 11

On the Mega 6.3, this is simple. Go to Developer Options → OEM Unlocking. Note: For some carrier variants (AT&T, Verizon), the bootloader is permanently locked. If you have a carrier model, stop here—you cannot install Android 11.

The Samsung Galaxy Mega 6.3, originally released in 2013, has officially stopped at Android 4.4.2 KitKat. However, thanks to the dedicated enthusiast community, it is possible to run on this vintage phablet using custom ROMs. The "Impossible" Update: Android 11 on the Mega 6.3 samsung mega 6.3 android 11