Hi there. I've searched the forums and even Google, but could not find an exact answer for some of my questions. So, I've decided to post. I own a Champagne Gold Japanese PSP Sony version 3.11 and I wanted to know if the Lumines Illuminati exploit will work correctly on this PSP? It's my understanding that upgrading to 3.50 using the North American version to overwrite the Japanese version may cause instability problems or not work at all. Is this true? If so, should I upgrade using the Japanese 3.50 Sony version? Afterwards, how will using the 1.50 downgrade update affect the version regionally and the oe custom firmware installation? Basically, my true goal is to install an oe firmware that is most compatable with Final Fantasy VII. 3.03 oe-c and 3.40 oe seem to be most popular. My main memory stick is a Sony 4GB, but I've read 1.50 only recognizes 32MB - 2GB memory sticks. I believe I can use a 32MB memory stick to go through the process of installing oe firmware (If I can on this PSP), and then just remove it and continue with my 4GB. Correct me if I'm wrong... By the way, I picked up a brand new origional copy of Lumines at Toys "R" Us for $13.98. I looked everywhere and finally lucked out. They had five copies. My thanks to those who took the time to read and hopefully answer some questions regarding the Japanese PSP.