Hovatek Forum DEVELOPMENT Android [Please help] Disabling dm-verity causes device to bootloop into Fastboot (Infinix Hot 9 Play)
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[Please help] Disabling dm-verity causes device to bootloop into Fastboot (Infinix Hot 9 Play)

[Please help] Disabling dm-verity causes device to bootloop into Fastboot (Infinix Hot 9 Play)

vvion
vvion
vvion
Newbie
4
23-12-2020, 05:57 AM
#1



I manage to get root for my device then I messed around with the device partition trying to move a file. When trying to reboot the phone, it bootloop into Fastboot. I flash my stock firmware and everything went normal again, until I try to flash EMPTY vbmeta to gain access to root again. The device keep entering Fastboot so I flash the STOCK vbmeta and it fixed it, but I want to disable dm-verity so I can root my device again. Please, kindly help!

What I did before this happen:
1) I manage to get root on my device using this tutorial https://www.hovatek.com/forum/thread-21427.html (Root checker verified I have root and I'm able to grant su access to some app)
2) Play around with /system and / partition with adb shell using some command because I want to move a certificate file.
Command used:
"mount -o rw,remount /system" (same command on / partition)
3) Saw nothing happen, but I try to move the file anyway with MiXplorer v6-49-3 and it failed, said "Not enough space" and it only copied a 0 Byte file.
Directory: "/data/misc/user/0/cacerts-added" to "/system/etc/security/cacerts"
4) Uninstalled a System Apps called "Aha Games" (Size's 19 MB) using "System Apps Remover"
5) Tried to move the file again, succeeded
Directory: "/data/misc/user/0/cacerts-added" to "/system/etc/security/cacerts"
6) Certificate showed as both System and User certificate on "Encryption & credentials" setting on android
7) Reboot the phone
8) Bootloop into Fastboot
9) Flashing stock firmware with SP Flash Tool v.5.2044 then factory reset from Recovery
10) Phone boot normally and able to enter home screen
11) Trying to gain root again using the same step in the tutorial
12) Flashing EMPTY vbmeta.img then reboot.
13) Bootloop into Fastboot
14) Flashing STOCK vbmeta.img then reboot
15) Device boot normally and able to enter home screen.

Device:
Infinix Hot 9 Play

Build Number:
X680B-H6215EFIJ-Q-OP-201019V214

Kernel Version:
4.9.190+
#2 Mon Oct 19 13:04:42 CST 2020

Magisk Manager:
Canary Version

STOCK vbmeta.img:
https://drive.google.com/file/d/1S1npLIQ...sp=sharing

STOCK boot.img
https://drive.google.com/file/d/1gERZc5x...sp=sharing

STOCK recovery.img
https://drive.google.com/file/d/1ESzy4oY...sp=sharing
hovatek
hovatek
hovatek
Administrator
49,570
23-12-2020, 07:10 AM
#2
(23-12-2020, 05:57 AM)vvion I manage to get root for my device then I messed around with the device partition trying to move a file. When trying to reboot the phone, it bootloop into Fastboot. I flash my stock firmware and everything went normal again, until I try to flash EMPTY vbmeta to gain access to root again. The device keep entering Fastboot so I flash the STOCK vbmeta and it fixed it, but I want to disable dm-verity so I can root my device again. Please, kindly help!
...
Which DA file / auth did you use? Could you upload and drop a link
Download this vbmeta @ https://mega.nz/file/RwZl0IaA#_7U0WFRQXW...8jyqVg2N0w
then run:
Code:

fastboot flash vbmeta vbmeta.img
fastboot --disable-verity flash vbmeta vbmeta.img
This post was last modified: 23-12-2020, 07:46 AM by hovatek.

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vvion
vvion
vvion
Newbie
4
23-12-2020, 01:44 PM
#3
Quote:Which DA file / auth did you use?
I got the DA file from this post https://www.hovatek.com/forum/thread-23339.html
I download the Infinix Hot 9 Play x680 DA File

Quote:Could you upload and drop a link
Here's the one I downloaded then used
https://drive.google.com/file/d/1-PeHHq4...sp=sharing

Quote:Download this vbmeta @ https://mega.nz/file/RwZl0IaA#_7U0WFRQXW...8jyqVg2N0w
then run:
Code:
Code:

fastboot flash vbmeta vbmeta.img
fastboot --disable-verity flash vbmeta vbmeta.img
I downloaded the file (Size's 256 bytes) and run the command then reboot, the device boot into Fastboot again.
hovatek
hovatek
hovatek
Administrator
49,570
25-12-2020, 09:27 AM
#4
(23-12-2020, 01:44 PM)vvion I downloaded the file (Size's 256 bytes) and run the command then reboot, the device boot into Fastboot again.

I see. Flash this vbmeta https://mega.nz/file/dnAS3AhD#g5PnSg-0UK...pPmsH75-Bg and your magisk patched boot together and let me know how it goes

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vvion
vvion
vvion
Newbie
4
26-12-2020, 12:18 PM
#5



(25-12-2020, 09:27 AM)hovatek I see. Flash this vbmeta https://mega.nz/file/dnAS3AhD#g5PnSg-0UK...pPmsH75-Bg and your magisk patched boot together and let me know how it goes

Downloaded and tried flashing both files together using Fastboot, the device boot into Fastboot again. Same result with SP Flash Tool

patched boot image:
https://drive.google.com/u/0/uc?id=1ckhX...t=download
This post was last modified: 27-12-2020, 05:54 AM by vvion.
hovatek
hovatek
hovatek
Administrator
49,570
27-12-2020, 09:34 AM
#6
(26-12-2020, 12:18 PM)vvion Downloaded and tried flashing both files together using Fastboot, the device boot into Fastboot again. Same result with SP Flash Tool

patched boot image:
https://drive.google.com/u/0/uc?id=1ckhX...t=download

It seems you'll need to build a vbmeta from scratch and modify little by little to figure out where the problem is coming from. Do you have Linux setup on our PC?

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vvion
vvion
vvion
Newbie
4
27-12-2020, 10:32 AM
#7
(27-12-2020, 09:34 AM)hovatek It seems you'll need to build a vbmeta from scratch and modify little by little to figure out where the problem is coming from. Do you have Linux setup on our PC?

I have Windows 10 v1909 installed, and I currently don't have any clue at all about Linux and creating a vbmeta myself
hovatek
hovatek
hovatek
Administrator
49,570
28-12-2020, 07:17 AM
#8
(27-12-2020, 10:32 AM)vvion I have Windows 10 v1909 installed, and I currently don't have any clue at all about Linux and creating a vbmeta myself

This will be an uphill battle.
Grab a USB stick and create a bootable linux OS using https://www.hovatek.com/forum/thread-32290.html

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trimmytech
trimmytech
trimmytech
Enthusiastic Member
7
23-09-2021, 08:39 AM
#9
(27-12-2020, 09:34 AM)hovatek
(26-12-2020, 12:18 PM)vvion Downloaded and tried flashing both files together using Fastboot, the device boot into Fastboot again. Same result with SP Flash Tool

patched boot image:
https://drive.google.com/u/0/uc?id=1ckhX...t=download

It seems you'll need to build a vbmeta from scratch and modify little by little to figure out where the problem is coming from. Do you have Linux setup on our PC?

i am presently having the same problem, what is the solution please ?? i have linux installed (Kali linux)
X3non
X3non
X3non
Recognized Contributor
22,062
23-09-2021, 10:52 AM
#10



(23-09-2021, 08:39 AM)trimmytech i am presently having the same problem, what is the solution please ?? i have linux installed (Kali linux)

this is someone's thread, create a new thread for this by clicking "ask question" at the top
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