Hi! A great help for the much needed person (NOOB) =D I've recently upgraded from 2.71 SE-C to 3.03 OE-C by Dark Alex. I Follow all the instruction and walah! i did have 3.03 OE-C! But i do have problem in some .CSO games (Fight Night Round 3, GTA LCS, NBA Live 2007) it do loads up but after asking me about autosave it hangs up / freeze and i have to removed the battery (is it ok to removed the battery?) or i will wait forever. but the other .CSO games (Dragon ball, Miami Vice) works fine. Can you help me on this? Do i need to downgrade first(2.71 - 1.50 - 3.03) or can i install again 3.03 OE-C? also is there any guide on how to install popstation (3.03)? Do i still need UMD (UMD Sampler) to play the .cso games? Thanks!