While browsing the internet for PSP stuff i came across a forum(which i will not post here since it is illegal (site has iso's) and the forum post contained a devhook with 3.00 on it here's the forum post
The thread on that forum contains a number of reports of that it is workingYES!! you say the title correctly, this will emulate 3.00 on your psp.. but first, ure psp must meet up some some specifications
1. it MUST!!!!!.. be running SE-C (Custom FW)
2. This COULD brick ure psp, so be warned
3. you may have a problems running it, some people do, it could be you, so if it dosent work for you..... DONT WHINE AT ME!
iso's can be run
hen-d programs work
CURRENTLY DOESNT WORK:
ps3 remote connection
All fiiles are included, just extract to the memstick ROOT! and run the devhook that came with it with settings to 2.71 (flash) THIS IS VITAL!
it should boot, but i warn you, the web browser dosent work, and DONT, i mean this, DO NOT GO INTO SYSTEM SETTINGS OR POWER SETTINGS!!!!, this will cause an internal error and you WILL have hell.
this is only beta!!!! but enjoy none the less its awesome!! (it worked for me )
I will also not post the download link.