Hey, I have 2 PSPs. One works fine, the other cannot read UMDs, or go online. Because it can't read UMD's, I can't keep one in it to boot ISO's off of the MS. I have firmware version 3.40 oe-A. I've experimented with devhook ultimate installer v 1.1 or something, but couldn't get anything running. I loaded firmware 2.71, and then the ISO failed to show up. (the iso I've been working with is Metal gear solid Portable ops, if that matters. Any info you could shed on this would be great. Also, the No-umd-mode in the recovery settings works for few games, and not for this one. Thanks in advance.