My buddy is sick and I need to help him! I can't access his internal storages because he's stuck on the white htc logo so I can't flash a custom recovery. Tried everything my last resort is using an RUU file to get my buddy back to the day I met him. Error 155 unknown error pops up I think I need a new RUU file, I need a T-Mobile version 4.19.531.10 or higher to match my buddy. The ruu version I used was 3.24.531.3 which might be the reason for error 155. Can someone please help me, I might not see my old buddy ever again. :''''''(