What can someone do that has bought a used RF G2 sim and the original owner has NOT transfered the registration or releiced the S/N and RF refuses to let me re-register it and I need the latest update in order to get it to run on my computer.?
There is a Patch for Nvida Video cards and they admitted it wouldnt work correctly but you cant obtain the patch without registering the program, and you cant if someone else already did.

Same as buying defective goods. The seller should cooperate. If they don't, go after them and do whatever you can. Unfortunately we can't all share one copy of software. Either the seller doesn't realize that he/she must release it and will do it or they are being fraudulent.