пробуй вот так...
so do next
1- with ufs box start to erase manual this adress
start: 00000000 end: 00FFFFFF
start: 02000000 end: 02FFFFFF
start: 04000000 end: 047FFFFF
this 3 adress will eras the 3 flash's and u will not lost ur phone imei
2- with ufs again erase
start: 00010000 end: 0000FFFF
start: 02000000 end: 00FFFFFF
start: 02FC0000 end: 0286FFFF
start: 02A00000 end: 0000FFFF

3- flash ur phone with latest firmware
4- write full pm to ur phone
5- unlock and format user area