If bootloader only, nope. you won't lose them.Do i lose my app data or other data if i install a new bootloader ?
If bootloader only, nope. you won't lose them.
You already know what bootloader you're going to install?
MJ5 is a good choice since you can install 4.1.2, 4.3, or 4.4.2 roms.I think i start with the MJ5 bootloader
So it's totally save to load this bootloader with Odin?