Well, I tried to do this with mine, and failed. Desoldering the old chip with Chipquik was no problem, but I think soldering on the new chip was beyond my capabilities.
I ordered two IC's. The first one I think I put too much solder and failed right away, so I started over.
Second time I think my mistake was I pre-tinned the pads. I think I was supposed to just set the chip in place, add flux, and then drag solder from the ends of the pins. As it is now though, it looks like I've got a bit too much solder, and somehow the pins are out of alignment with the pads now.
I think I need to order some more chips and try again and hope my board is still okay.
I thought it would be a quick project. But of course every quick project I take on always quickly escalates into an ongoing disaster. Anyone want to just sell me one?