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Help to backup Allwinner firmware

Help to backup Allwinner firmware

Windows Vista
Windows Vista
Windows Vista
Junior Member
27
03-12-2022, 04:20 AM
#1



Hi there, I currently own a Ghia A7 (GA7133N) tablet powered by a Allwinner A133 processor and I'd like to install a GSI on it, but the problem is that I can't find a working method for doing a firmware backup of it (just in case something goes wrong during the flashing process) ...

Any suggestion will be highly appreciated ?
maxpayne
maxpayne
maxpayne
Contributor
2,873
05-12-2022, 03:00 PM
#2
(03-12-2022, 04:20 AM)Windows Vista Hi there, I currently own a Ghia A7 (GA7133N) tablet powered by a Allwinner A133 processor and I'd like to install a GSI on it, but the problem is that I can't find a working method for doing a firmware backup of it (just in case something goes wrong during the flashing process) ...

Any suggestion will be highly appreciated ?

Is it rooted with unlocked bootloader?
Windows Vista
Windows Vista
Windows Vista
Junior Member
27
05-12-2022, 03:10 PM
#3
(05-12-2022, 03:00 PM)maxpayne
(03-12-2022, 04:20 AM)Windows Vista Hi there, I currently own a Ghia A7 (GA7133N) tablet powered by a Allwinner A133 processor and I'd like to install a GSI on it, but the problem is that I can't find a working method for doing a firmware backup of it (just in case something goes wrong during the flashing process) ...

Any suggestion will be highly appreciated ?

Is it rooted with unlocked bootloader?

No, I can unlock the bootloader but I need the boot image to root it, which I don't have because I don't have the firmware
maxpayne
maxpayne
maxpayne
Contributor
2,873
06-12-2022, 08:07 AM
#4
(05-12-2022, 03:10 PM)Windows Vista No, I can unlock the bootloader but I need the boot image to root it, which I don't have because I don't have the firmware

Try this adb script (ignore the model name it shows)
Attached Files
.zip
allwinner_firmware_dump_script_tool.zip
Size: 164.4 KB / Downloads: 50
Windows Vista
Windows Vista
Windows Vista
Junior Member
27
16-12-2022, 12:59 AM
#5



(06-12-2022, 08:07 AM)maxpayne
(05-12-2022, 03:10 PM)Windows Vista No, I can unlock the bootloader but I need the boot image to root it, which I don't have because I don't have the firmware

Try this adb script (ignore the model name it shows)

In my case it didn't work, but here's how i successfully dumped the boot image (i basically lost the stock rom in the process):
i unlocked the bootloader the usual way (fastboot oem unlock) and then i flashed a rooted phh gsi and when it booted i used this command to dump some partitions including boot;
Code:

dd if=/dev/block/mmcblk0p5 of=/sdcard/boot.img
nmajin
nmajin
nmajin
Newbie
2
15-08-2023, 03:53 AM
#6
(16-12-2022, 12:59 AM)Windows Vista
(06-12-2022, 08:07 AM)maxpayne
(05-12-2022, 03:10 PM)Windows Vista No, I can unlock the bootloader but I need the boot image to root it, which I don't have because I don't have the firmware

Try this adb script (ignore the model name it shows)

In my case it didn't work, but here's how i successfully dumped the boot image (i basically lost the stock rom in the process):
i unlocked the bootloader the usual way (fastboot oem unlock) and then i flashed a rooted phh gsi and when it booted i used this command to dump some partitions including boot;
Code:

dd if=/dev/block/mmcblk0p5 of=/sdcard/boot.img

I also have an Allwinner A133 tablet, how did you end up getting fastboot working? I cannot get my PC to find the driver for the "USB Developer" device and therefore cannot unlock the bootloader. I can get the commands for fastboot to work in fastbootd but I get an issue with HAL when trying to unlock the bootloader there, which also sounds like something that should not be done anyway.
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