I have an old QHY, what a I have done and works is the following.:

1. Open a terminal with root permissions and check which camera vid and pid I have with command: "lsusb" it list usb devices connected. I can deduct that I have a QHY from Vendor ID (VID) 16c0 and the Product ID (PID) 296a.
2. Then go where you have de following file to edit. 85-qhy.rules, it could be on /etc/udev/rules.d/ or on astroberry 2.0: /lib/udev/rules.d/
3. edit with nano and inspect the file, and locate the entry where there are your vendor, in my case 16c0. And a PID similar, i have found 296c. I have duplicated the line replaced the PID to mine 296a.
It shows something like this: ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="296a", RUN+="/sbin/fxload -t fx2 -I /lib/firmware/qhy/QHY5.HEX -D $env{DEVNAME} -s /lib/firmware/qhy/QHY5LOADER.HEX"
This will tell something like when plug a USB from VID and is that PID, load this firmware.
In my case this would be nice to be added to default repository.

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