PSP 3.50 firmware available: "Remote Play" over the Internet | Engadget
Wireless PSP Custom Firmware installation is now possible! - Wololo.net
OFW psp & CFW psp blogs - Firmware 6.39 ME-5 was develop and release by PSP Developer Neur0n who has decided to release his latest PSP Custom Firmware 6.39 ME-5 for users