I recently had to replace the motherboard in my CECHA01 and now I have to remarry the bluray drive to it. All I am looking for is a RELIABLE way to downgrade so I can correct the problem. I would prefer to use my PSP to do this but I am unsure of the procedure and what is actually legitimate in regards to what I should download etc. Any advice that will point me in the right direction is greatly appre iated. I would also like to know if buying a service dongle is a better option and if so, which dongle is the best to buy.