Dahua NVR5232-EI – Need help locating TTL pins & flashing via UART

[tarekovitche]

Hi everyone,
I’m working on a Dahua NVR5232-EI board and I’m trying to recover it via TTL (UART).
I need help with:

• Identifying the correct TTL pins (GND, TX, RX, VCC) on this board
• Confirming the correct voltage level (3.3V or 1.8V)
• Steps to flash full firmware via UART / bootloader

I have attached a clear photo of the motherboard for reference.
If anyone has experience with this model or a similar Dahua board, your guidance would be greatly appreciated.
Thanks in advance!

 

[MC1987]

uboot is your friend here, obtain the zipped firmware folder files and put the update.img and uboot.img files onto a blank USB. Insert into the NVR and turn it on and cross your fingers and toes.