SigmaStudio Network Utility for Linux seems to be outdated

SigmaStudio Network Utility for Linux seems to be outdated.  Based on debugging I have made, the protocol has changed in some stage.  Is there any working code available anywhere?  The latest version here https://github.com/analogdevicesinc/sigma-tcp doesn't really work.

I have understanding on the writing commands but register read command is mystery as the latest information on the response packet format doesn't seem to work.