I'm comfortable with ODIN, never used FlashFire. I know I'll lose root but it's looking like I need to swap it out via ext. warranty.
https://www.androidfilehost.com/?fid=24438995911970571. Download this, unzip and flash .tar with Odin, in 2nd slot on Odin, I think it's AP. Doing this will put you on stock bpb1 firmware, and you will also be unable to flash back to kit Kat firmware because of something that changes in the bootloader after flashing lollipop firmware. Or you can get 6.0 firmware from SamMobile.comI'm comfortable with ODIN, never used FlashFire. I know I'll lose root but it's looking like I need to swap it out via ext. warranty.