[bond83]

Hello.
made a full backup of the firmware using a flash tool.
made a full backup of the firmware using a flash tool.
images:
boot.img
lk.bin
lk2.bin
logo.bin
md1arm7.img
md1dsp.img
md1rom.img
md3rom.img
recovery.img
system.img
trustzone1.bin
trustzone2.bin
signed with cert 1 and cert 2.


if you delete them using a hex editor, the phone will not turn on, there will be a message:
"Red State
Your device has failed verification and may not work properly
Your device will boot in 5 seconds "

and it constantly reboots.

How can I solve this problem?

[X3non]

...

we don't have the tool or key that was used to make such signing
ofc you are aware that a key must have been used, anything else other than this key won't boot on the device
did you try unlocking the bootloader of the device before attempting to flash the modified files?

[bond83]

...

did you try unlocking the bootloader of the device before attempting to flash the modified files?

no bootloader. Meta Mode only.

[X3non]

no bootloader. Meta Mode only.

probably one of those mtk oreo tightly secured phones

[bond83]

no bootloader. Meta Mode only.

probably one of those mtk oreo tightly secured phones

this is android 7.0

I have a program to reset frp for this device.

can someone patch it?

[X3non]

...
can someone patch it?

No
format only frp partition using spft to remove frp ; see https://www.hovatek.com/forum/thread-21638.html