Can't flash vbmeta or boot.img

2

17-11-2022, 03:54 PM

#1

I have a device named Reeder P13 Blue MaxL (Unisoc SC9863a)
I tried all steps in: How to root Unisoc (SPD) Android 9; Case study: Teclast P80X (hovatek.com)
But I can not get the vbmeta.img working, I am on Android 11, I used Ubuntu to make the signed vbmeta.img.
It gets stuck at writing.
My bootloader is unlocked.
The stock boot.img and vbmeta-sign.img is avaible on : commanderabdu/P13BlueMaxL-2021-root-img: P13BlueMaxL için boot.img ve vbmeta.-sign.img dosyası (github.com)

hovatek
Administrator

49,832

18-11-2022, 08:51 AM

#2

(17-11-2022, 03:54 PM)commander_abdu I have a device named Reeder P13 Blue MaxL (Unisoc SC9863a)
I tried all steps in: How to root Unisoc (SPD) Android 9; Case study: Teclast P80X (hovatek.com)
But I can not get the vbmeta.img working, I am on Android 11, I used Ubuntu to make the signed vbmeta.img.
It gets stuck at writing.
My bootloader is unlocked.
The stock boot.img and vbmeta-sign.img is avaible on : commanderabdu/P13BlueMaxL-2021-root-img: P13BlueMaxL için boot.img ve vbmeta.-sign.img dosyası (github.com)

Try flashing in fastbootd instead of fastboot

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commander_abdu
Newbie

2

19-11-2022, 08:53 AM

#3

fastbootd was not working, so I flashed it in fastboot instead of bootloader.
Thanks I guess.

And it flashed, however, when I flash my vbmeta.img, it always bricks.
This was the command I used for making the vbmeta.img:

python avbtool make_vbmeta_image --key hovatek.pem --algorithm SHA256_RSA4096 --flag 2 --chain_partition boot:1:keys/boot_key.bin --chain_partition vbmeta_system:2:keys/vbmeta_system_key.bin --chain_partition vbmeta_system_ext:3:keys/vbmeta_system_ext_key.bin --chain_partition vbmeta_vendor:4:keys/vbmeta_vendor_key.bin --chain_partition vbmeta_product:5:keys/vbmeta_product_key.bin --chain_partition dtbo:6:keys/dtbo_key.bin --chain_partition l_modem:7:keys/l_modem_key.bin --chain_partition l_ldsp:8:keys/l_ldsp_key.bin --chain_partition l_gdsp:9:keys/l_gdsp_key.bin --chain_partition pm_sys:10:keys/pm_sys_key.bin --chain_partition socko:11:keys/socko_key.bin --chain_partition omdko:12:keys/odmko_key.bin --padding_size 16384 --output vbmeta-sign-custom.img

There was no Android 11 file to pad the vbmeta, but I figured out that it was 00 40 00 00, so I downloaded the Android 9.py and used that one.
I will create a new thread.

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