Who can help me look for an upgrade PSP3.52M334 documents and files PSP3.52 system upgrade?

Who can help me look for an upgrade PSP3.52M334 documents and files PSP3.52 system upgrade?
How I could not find ah, please do not network to the home page of the paper, I Oh.Thank you for the!

the best PSP is the most stable version is 3.71M33-4.suggest that you use this.
3.52M33-4 Address / news / hack/200708/20070821091426.shtml
3.71M33-4 Address / pspdg/jc/updown/200709/20070924085412.shtml