EDIT: I FOUND A RANDOM REDDIT POST THAT FOUND THE SOLUTION! THANKS RANDOM INTERNET PERSON! Basically, I had to switch the protocol (presumably to MPP 2.0) by holding down both buttons for 30 seconds (yikes that’s a long time) while it was plugged in. Now my pen works :DDDDDD

It is fully charged (white LED when plugged in), and I have tried putting the pen on my laptop’s touchscreen, holding the top side button, holding the bottom side button, holding both side buttons, double tapping each and both buttons, everything! I can’t seem to get the blinking white LED that would indicate pairing mode, and Bluetooth can’t find the device.

It’s not the OS’s fault, I have tried both Fedora and Windows and both cannot find it (since it’s not in pairing mode) and my old nearly-broken stylus (Asus Pen 2, also MPP 2.0 compatible like the Lenovo one) works fine.

I can’t seem to find any information online by Lenovo (it goes from charging it up to using the pen, nothing about holding down buttons or anything!). AI is certainly no help, it just pulls answers out of its ass (there is no third “pairing button”, holding either of the two buttons doesn’t work, and there’s no secret button below the tip of the pen!)

How on earth do you set the Lenovo Precision Pen 2 to pairing mode???

If it means anything, I am using the Asus Zenbook Flip 14 OLED UP3404, which comes with the aforementioned Asus Pen 2.0, meaning it definitely supports MPP 2.0.