Need Dump file: DVR Chasis: "H2_ V_2.2N /2010/12/1"

[7aman]

Hi.
I need flash dump for this dvr.
thanks.

[dede]

Why do you need it, whats wrong with dvr atm? UART console logs?

[7aman]

hangs on logo then restarts.
I have current flash dump. I can upload if it helps.
There is a 4 pin that could be UART, but I don't have the firmware.
There is nothing helpful on device, no label, no brand, no model.

[dede]

Upload it, also connect UART and attach boot log

[7aman]

https://ufile.io/tlmcs

[dede]

You can try erasing last 128KB... but i dont think that will help. It seems that JFFS2 that holds system modules is corrupt and this board is nothing i have seen before...

Anyway, post boot log, it might help.

[VirtualLink]

Better console log, as already said dede!

[7aman]

I put the IC back to try serial console.
But it doesn't show logo anymore. It doesn't restart.
and no console output.

[dede]

Well, check soldering quality also maybe you've overheated flash memory during soldering.