As promised a few hours ago the unstoppable neur0n releases v3 for his LCFW, a temporary custom firmware that you need to start again if you restart your PSP.
The only change is the switch between LCFW 6.39 ME-3 and 6.XX PRO-B6 by Coldbird & VirtuousFlame, so as to have excellent compatibility with ISOs / plugins, etc..
UL: http://ul.to/evykbdiz
MU: http://www.megaupload.com/?d=QIJS1VO9
Source: neur0n's twitter