[Tutorial] How to create a custom signed vbmeta.img for Unisoc using AVBtool
[Tutorial] How to create a custom signed vbmeta.img for Unisoc using AVBtool
08-12-2021, 12:01 PM
(07-12-2021, 06:51 PM)Денис Ломонин Hello! Followed all the steps outlined in the "How to create a custom signed vbmeta.img for Unisoc using AVBtool" manual. Got vbmeta-sign-custom.img. But when I try to flash it via fastboot, I get a FAILED error (remote: Write img fail!). The bootloader is unlocked! I entered the following command:
c: \ UnlockBootloaderWin> fastboot flash vbmeta vbmeta-sign-custom.img
target didn't report max-download-size
Sending 'vbmeta' (1024 KB) ...
OKAY [0.031s]
Writing 'vbmeta' ...
FAILED (remote: Write img fail!)
Finished. Total time: 0.266s
Tell me how to fix it?
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25-12-2021, 03:24 AM
(29-09-2021, 03:30 PM)Gargoyle either wait till battery drains or manually disassemble and disconnect the battery to power it off then you can flash using research download tool
if you still have any problems then create a new thread for your device issue by clicking "ask question" at the top
This possibility occurred to me only when I put it into service, so I will not try it now, but it would mean that it is immortal, like Xiaomi ?
[/quote]
Yes sir, that's what I meant.
Thanks for all the answers, the tablet came back to me from service as "damaged motherboard and lcd" LOL
I bought a CM2 dongle and it works as it should, no damage.
Thanks for this forum !!! Nice work :-)
This post was last modified: 25-12-2021, 03:27 AM by Gargoyle.
02-01-2022, 02:58 PM
What can I do?
Thanks in advance
03-01-2022, 08:03 AM
(02-01-2022, 02:58 PM)gasparirob Hi all, I'm stuck at "Download vbmeta_pad.py" requirements: I'm on Android 11, so there's no vbmeta_pad.py I can download.
What can I do?
Thanks in advance
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05-01-2022, 09:10 AM
(04-01-2022, 05:45 PM)lolvatveo can I install TWRP?
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15-03-2022, 06:43 PM
vbmeta-sign-custom.img = 0bytes
python avbtool make_vbmeta_image --key rsa4096_vbmeta.pem --algorithm SHA256_RSA4096 --flag 2 --chain_partition boot:1:keys/key_boot.bin --chain_partition system:3:keys/key_system.bin --chain_partition vendor:4:keys/key_vendor.bin --chain_partition product:10:keys/key_product.bin --chain_partition dtbo:9:keys/key_dtbo.bin --chain_partition recovery:2:keys/hovatek.bin --chain_partition l_modem:5:keys/key_l_modem.bin --chain_partition l_ldsp:6:keys/key_l_ldsp.bin --chain_partition l_gdsp:7:keys/key_l_gdsp.bin --chain_partition pm_sys:8:keys/key_pm_sys.bin --chain_partition dtb:11:keys/key_dtb.bin --padding_size 16384 --output vbmeta-sign-custom.img
Traceback (most recent call last):
File "avbtool", line 4154, in <module>
tool.run(sys.argv)
File "avbtool", line 4004, in run
args.func(args)
File "avbtool", line 4032, in make_vbmeta_image
args.padding_size)
File "avbtool", line 2430, in make_vbmeta_image
append_to_release_string, 0)
File "avbtool", line 2526, in _generate_vbmeta_blob
desc.public_key = open(file_path, 'rb').read()
IOError: [Errno 2] No such file or directory: 'keys/key_boot.bin'
16-03-2022, 08:21 AM
(15-03-2022, 06:43 PM)mohaboha13 Can you help me, I don't understand Python
vbmeta-sign-custom.img = 0bytes
No such file or directory: 'keys/key_boot.bin
check your keys folder if key_boot.bin is present
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16-03-2022, 04:36 PM
(16-03-2022, 08:21 AM)hovatekAt these keys(15-03-2022, 06:43 PM)mohaboha13 Can you help me, I don't understand Python
vbmeta-sign-custom.img = 0bytes
No such file or directory: 'keys/key_boot.bin
check your keys folder if key_boot.bin is present
to thank. I succeeded in this stage, but the next stage failed
python vbmeta_pad.py
Traceback (most recent call last):
File "vbmeta_pad.py", line 4, in <module>
f = open("vbmeta_custom.img", "rb")
IOError: [Errno 2] No such file or directory: 'vbmeta_custom.img'
12-05-2022, 09:01 PM
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