[chirp_devel] Request Help with Checksum

[Aaron Pelly]

On 14/03/17 14:01, Jim Unroe via chirp_devel wrote:
> I am working on support for the Retevis RT23. I've captured a serial
> download. I've even successfully downloaded a "factory" image from the
> radio. But after looking at the data blocks, it appears that there is
> a checksum at the end of each block of data.

Can't help right now but here are a couple of links that might put you
on the right foot:

https://sourceforge.net/projects/reveng/?source=navbar
http://sitsec.net/blog/2012/02/10/brute-forcing-crc-parameters/