[Tony475]

I compiled twrp for my device and flashed it , then phone didn't booteed and should error boot.img is not signed. Then I flashed complete stock rom with sp flash tool and from then DM Verity error keeps showing up every time I restarted phone. I tried to fix it with adb command but it didn't worked.

Phone details:
Lava z62
Chipset: MT6761

Please help.

[X3non]

I compiled twrp for my device and flashed it , then phone didn't booteed and should error boot.img is not signed. Then I flashed complete stock rom with sp flash tool and from then DM Verity error keeps showing up every time I restarted phone. I tried to fix it with adb command but it didn't worked.

Phone details:
Lava z62
Chipset: MT6761

Please help.

is the phone able to boot to homescreen at all?
what is the exact error message you get when you attempt to boot the phone? attach a picture
do you remember the previous build number of the phone before flashing?

[Tony475]

Phone is booting to home screen but showing "dm Verity error your android system may be corrupted" during booting.

[X3non]

Phone is booting to home screen but showing "dm Verity error your android system may be corrupted" during booting.

how did you get the firmware you flashed, from a backup?
have you tried disabling dm_verity? see https://www.hovatek.com/forum/thread-32719.html

[Tony475]

I got that firmware from online.i have no backup.

[xerxes]

I got that firmware from online.i have no backup.

You didn’t answer @x3non ‘s second question.

[Tony475]

I didn't tried disabling dm_verity

[hovatek]

I didn't tried disabling dm_verity

Your phone runs on Android 9 Pie.
Flash blank vbmeta as explained in method 3 @ https://www.hovatek.com/forum/thread-32719.html