Hello I recently downloaded GTA: VCS and GTA: LCS from a reliable source. Both were in .CSO format. However, when I put them on my mem stick,though they worked, there was a bit of lag. I read online that this could be fixed by decompressing it into an .ISO file. Now I successfully managed to decompress LCS into an ISO using UMDGen and am able to play it without lag. However, when I try to decompress VCS, I get an error. Just to clarify, the procedure I follow is: File --> open CSO --> Save as ISO After just 2% done, I get this error: "Error! Next Available LBA position is 2366 but LBA [\PSP_GAME\SYSDIR\BOOT.BIN] position is 2303!" An ISO file of around 5 MB is created. Is there any way to fix this? Thanks EDIT: Another quick question. Is it possible to brick your PSP (2000) from a CSO/ISO?