How can i downgrade my xa1 ultra to nougat? "G3221"

[waster93]

There is no thread for this information. Can a real xa1 ultra user tell me how to downgrade this device to nougat rom .( i dont have root ,its on stock oreo ). tried before but device locked itself and its hardbricked .no flashmode etc. a service solved it for around 50$.

WARNING- i found the solution, in flashtool just dont check CUST RESET button cuz its formatting bootloader and hardbricking device. if any "mtk sony" user reading this pls dont forget. cuz only jtag can solve this and its imposible to do it urself

 

[Ckovvi]

Hi,

try this guide, it should work (Link)

EDIT: After some reading it's maybe better to do it with flashtool as XA1 series are MediaTek devices and then some fsc script is needed to avoid hard brick.

Firmware can be downloaded with XperiaFirm if version you want is available on Sony servers.

 

[waster93]

Thanks for message but. Did u downgrade ur xa1 ultra before?.Cuz i tried flashtool downgrade before and its bricked device . And that thread looks like upgrade or reflash same version.im thinking this mtk phone different from others for downgrading

 

[Ckovvi]

No I didn't try but I think only difference with mtk devices is in script that is needed during flash.
Did you try the latest flashtool version? It seems that fsc script is added in latest version.

Sent from XA1+

 

[waster93]

yep i tried latest one and it failed maybe some settings different from other phones for downgrading this phone .

 

[waster93]

i found the solution, in flashtool just dont check CUST RESET button cuz its formatting bootloader and hardbricking device. if any "mtk sony" user reading this pls dont forget. cuz only jtag can solve this and its imposible to do it urself

 

[Ckovvi]

I'm glad you solved it and thanks for that advice!

Sent from XA1+

 

[fizzy900]

there is no thread for this information. Can a real xa1 ultra user tell me how to downgrade this device to nougat rom .( i dont have root ,its on stock oreo ). Tried before but device locked itself and its hardbricked .no flashmode etc. A service solved it for around 50$.

Warning- i found the solution, in flashtool just dont check cust reset button cuz its formatting bootloader and hardbricking device. If any "mtk sony" user reading this pls dont forget. Cuz only jtag can solve this and its imposible to do it urself

help me please my device is hard bricked what do i do