Unpack the firmware from the Chinese IP camera. There is a dump, how to do it?

Question

reverse engineering

There is a firmware from a Chinese IP camera, or rather a memory chip dump, you need to change some settings, or rather the server address. Help, I just never came across.

Answer 1

If the file is not packed with anything, then you can fix it with a hex editor. Otherwise, unpack, fix and pack back.
Alternatively, you can order this work from freelancers.

Answer 2

To begin with, the dump needs to be divided into sections, and this requires markup. The markup can be seen at the very beginning: in the bootloader configuration (Uboot). Of course, it's better to mess around with the whole thing live through the console (RS232) - enter the command line of the bootloader. Although the address can be compiled into software, and the software is compressed.
In a word, "matryoshka" ...
PS I picked a Chinese DVR on a Hi3520D chip, which has a similar firmware with some cameras.