Without more detail we can only assume, but I would imagine it working the same way that DLSS is (presumed?) to work.

Most of the upscaling is done by their TAA algorithm that’s a part of FSR3.1, then the image will be cleaned up with their “AI” component for more image stability.

Did a full shell swap on mine:

The thing with the screen is you have to pull on one corner (with heat) until that single corner comes up just enough for you to slide some kind of tool underneath to slice the adhesive and separate them better. Then you can move the heat gun around a bit more and move the tool with it to keep cutting through the adhesive.