I also think this radio needs Chirp support. It is an all mode SDR that transmits from 1-74MHz with an internal tuner and 74-1.2GHz or 74-2GHz depending on the model (version 1,2,3,or 4). It also has optional modules like DMR , GPS, Compass, and LoRa. Link to main radio page:
https://www.guohedz.com/Q900
The Guohetec Q900 programming software and images (saved as JSONs) are all compatible with the following radios (there may be more, because it is all basically the same hardware packaged and sold under different names:
Guohe Q900 (versions 3 or 4)
Radioddity QR-20 (ver 2)
Ailunce HS2 (ver 1)
Hamgeek Q900
Hamgeek PMR-171 (manpack)
Hamgeek PMR-119 (manpack MilSpec)
Guohetec TBR-119 (manpack MilSpec)
The normal programming software is called GHTerminal and doesn't need to be installed, just run the standalone .exe file and use whatever directory as a repository to store the file output (JSONs).
You can download 'GHTerminal PART1.rar' which is the only part of the 3 parts you need (I think) from this link:
https://www.guohedz.com/DOWNLOAD
You can also download all the manuals, software (lots of companion apps), and the firmware from that site. The Bluetooth controller Android app works surprising well.