Ultra stamina mode issue

[PlshelpMe4377]

I own an xperia z3 and i activate ultra stamina mode,and then it keeps saying "ultra stamina mode repairing" and it keeps restaring,and then again and again i cant do anything it keeps restarting,needs help pls tnx

[MarlonUk1]

can you try to use it while in safe mode?

if unable try perform software repair using Xperia Companion