Can't get connect with Armbian USB burning tool after install with emmc

[ybkim]

Hello I use TV Box model Vontar X3

 

it has amlogic 905x3 with 4g ram and 1gbit eth

 

I installed armbian bullseye in emmc and it works fine.

 

but I want recover my TV box to original firmware

 

USB Burning tool(Ver 2.2.4) can't get TV box driver

 

I use USB A to USB A cable, and use toothpick with reset button

 

but USB burning tool not work

 

My tvbox just boot with armbian. Please help 

Edited December 29, 2023 by ybkim

[ning]

In my opinion, reboot to firmware flash mode or use reset key to boot to flash mode, this function need support from uboot, but this function is missing from mainline uboot.

 

the only choice is use "MaskRom" mode to  back to vendor OS.

 

try to find M key or EMMC's CLK pin, short CLK to ground.

 

example of M key.

 

example of CLK pin on mainboard.

 

 

[ybkim]

I found in my board and it works thanks for your advice