Step 1:

We need to make a udev rule

Many text editor, for example, nano or Neovim(idk about vanilla Vim) can make a file, if you open the editor for a file, that does not exist. We gonna use “nano”, because it’s an easy text editor for everyone

You need to type one command in terminal: sudo nano /etc/udev/rules.d/70-sayo.rules

IT’S NESSESARY TO HAVE “70” AT THE START OF FILE NAME

Step 2:

Now, we need to add the lines

# SayoDevice O3C
SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1d6b", TAG+="uaccess"
SUBSYSTEM=="usb", ATTRS{idVendor}=="1d6b", TAG+="uaccess"

# SayoDevice O3C++ / CMF51+
SUBSYSTEM=="hidraw", ATTRS{idVendor}=="8089", TAG+="uaccess" 
SUBSYSTEM=="usb", ATTRS{idVendor}=="8089", TAG+="uaccess"

# SayoDevice ???

“SayoDevice ???” line is made for future updates for Sayo udev rules

You can type in manually or just copy it and paste by pressing Ctrl+Shift+V

After that, just save file and exit by pressing Ctrl+S and then Ctrl+X

We made a rules for SayoDevice

Step 3:

Then, we need to activate new rules. You can make it with this command in terminal: sudo udevadm control --reload-rules && sudo udevadm trigger

Now, you can check the https://app.sayodevice.com/home and make sure that all works

If you got a problems, just DM me in Discord or Twitter(X): (at)kartav__ , I would help you, or if you have any other SayoDevice, which is not O3C