I couldn't devel-su..password didn't worked.

BUT! I find easy way (or almost easy)...I changed another OtherHalf (I used original white backcover), It was important to check that internet connection work, because Sailfish 3 has tohkbd2 automatic installation!..then I power off, I put back FunkyOH keyboard. Power on..and now comes important: I have to wait little while in PIN question, if I enter PIN too fast then TOH-automatic driver download get timeout, because it seems that it has to wait internet connection longer after PIN..or it looks like that.