EVERY TIME I WANNA START A EMU OR A GAME ,LIKE CHESS MASTER, IT ALWAYS TEELS ME THE SAME THING,(THE GAME COULD NOT BE STARTED (80020148) ) PLEASE I REALLY NEED HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I am assuming you are new to PSP brewing and modding.. so I am gonna tell you what I also had to do.
About a month ago, I also bought a PSP 1.51.
First I had to upgrade to 2.0 to be able to downgrade to 1.50 using the PSP Downgrader Hack called: MPH Downgrader. click here: http://www.psp-hacks.com/psp-downgrade.php
Keep in mind that you need to do the 2.0 Update EBOOT installation first. Then proceed with the MPH Downgrader and 1.50 Update EBOOT installations later... just follow the written instructions there. Also temporarly disable your anti-virus program.. because it will not allow you to do one of the steps correctly.. because it will confuse the TIF file as a virus.. I can guarantee you that if you download it from that site. You will be okay.
After you do all that.. and you are displaying 1.50.. let me know when you need help with the rest.
Stylin' with a "Phat" PSP CFW: 5.00 M33-6 w/Kernel 150 add-on 5.00
and if you have any dead pixels i found the wraping the psp in aluminum foil and putting it in the microwave for 10 secs works the best if any longer than 10 sec your psp ruined