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Allwinner r16 headunit updating

hey all, i have allwinner r16 headunit for chevrolet spark.
I currently have android 6.0.1 and i want to update to 7 or above, is it possible? if yes how?

up.......

Need Custom Rom for Erisin erisin es7628A

Unit data:
Model" PX5
Android 8.1
MCU Version CSN2_0122019_102034
please help

BOSION BX544 - Android 8.1 (9.1 in info?) Allwiner T8 with STM32 MCU

Hello there.
Is there an option to cook some mod for this unit?
http://4pda.ru/pages/go/?u=https://yadi.sk/d/Z5lbMHHDNV6kyA Here's some original firmware - os_update + MCU file.
I'm not an expert but seriously there's no option for modding this unit? :/

Update new car Head unit

Hi everyone i got a car and it came with a Allwinner T8 head unit and i want to update it. The thread about it seems to be dead. How do i fig out how to go to A9?
About tablet
Android version 8.1.0
MCU version T8.3.19-1-13-616101-180823
System version V9.3.1 20180808.111351_TH6-0

Looking for recent stock Erisin rom for PX5 CSM4_D

As in the title I’m looking for stock Erisin rom for my 9” PX5 head unit with MCU CSM4_D_11112021_112948_V102
Any help would be greatly appreciated.
Thanks.