Hi hijinksensue! I’ve done a backup of my micro SD-card using Pi Copier (MAC) and there is Win32 Disk imager for windows. Then if something goes wrong you can just use your backup:-) I have not got the time to test if I can update to 3.5, and since everything is working I don’t see the point at this moment. But when I do I will tell you guys!
If somebody else have tried it you could share your experience here!:-)