dm-verity corruption Blackview bv4800

[Please help] dm-verity corruption Blackview bv4800

Noogy
Enthusiastic Member

6

13-03-2024, 03:01 PM

#1

I rooted my blackview bv4800 on android 13

tools used MTKclient, magisk and avbtool

1. unlock bootloader with MTKclient
→ python mtk da seccfg unlock

2. recover boot_a.img, vbmeta_a.img and lk_a.img files with MTKclient
→python mtk r boot_a,vbmeta_a,lk_a boot.img,vbmeta.img,lk_a.bin

3. patch boot.img with magisk

4. sign boot_a.img and vbmeta_a.img files with avbtool

5. flash boot_a.img and vbmeta_a.img with MTKclient
→python mtk w boot_a,vbmeta_a bv4800_image/magisk_patched-26100_biB8t-signed.img,bv4800_image/vbmeta-custom-sign.img
the root is functional

but every time I boot, I get a very disturbing warning that forces me to press the power button again to start up
followed by an orange status which is not disturbing

"dm-verity corruption
Your device is corrupt.
It can’t be trusted and may not work
Press power button to continue. Or, device will power off in 5s"

I've tried several solutions:

vbmeta empty
→ gives bootloop
fastboot oem cdms
→ is not a known command
fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img
→ gives a bootloop
TWRP installation
→ I was unable to create a custom TWRP for my device (I don't have a recovery partition)

I also followed this post: https://www.hovatek.com/forum/thread-31664.html
→ the first part but the second doesn't change anything

and i try this : https://www.hovatek.com/forum/thread-32719.html

here my file :
[ Login to download]

help would be welcome

kelvinchinedu
Contributor

1,475

16-03-2024, 10:08 AM

#2

Dump your firmware free on github

maxpayne
Intern

4,033

04-04-2024, 08:22 AM

#3

(13-03-2024, 03:01 PM)Noogy I rooted my blackview bv4800 on android 13
...

help would be welcome

Why are you using avbtool to sign?

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Maverick76
Newbie

1

24-10-2024, 11:02 AM

#4

Same issue! Any solution available?

maxpayne
Intern

4,033

24-10-2024, 12:43 PM

#5

(24-10-2024, 11:02 AM)Maverick76 Same issue! Any solution available?

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Robbie_matrix
Newbie

2

10-01-2025, 02:54 PM

#6

By unlocking your device and flashing vbmeta.img, your device will go into Orange State.

Ignore and it will bootas normal, every time you boot up the device!!

This device is not secure and cannot be trusted ⚠️

You will have to edit the lk.img to remove the text with HexEdit

I unlocked a Tecno Pova 6 and that was the exact same message I got, but I left it in case editing the lk file stuffed up the phone/device internal coding..

This post was last modified: 10-01-2025, 02:57 PM by Robbie_matrix.

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