How do I un-semi-brick my PSP?

i have a psp 3004 version 6.20 i go to gamestorrent.com to download a psp game and i downloadeda petz hamsterz bunch psp game beacause i just want to try how it will work on my psp it is only of 25 mb so i downloaded it then it is on my pc after the...

I just got a psp. It looks awesome but so confusing. I have lots of psp questions: A 1gb micro duo card came with it. I was wondering how many songs, movies, pics this can hold? Also where can I get a USB for my computer to connect with my PSP to transfer...

I have watched numerious videos on how to downgrade my PSP slim, but they require and old PSP battery and sometimes they want me to take apart the original PSP slim battery apart. I tried to get youtube videos on my PSP and YES I CONVERTED THE VIDEOS...

I have a PSP 3000 that I bought a couple of days ago and the firmware is 6.20. However, the memory stick is from my former PSP, the oldest one/the first one that came out. The memory stick when plugged into the computer has those removable disks, and...

question 1: ok here is the thing. i have a psp running on firmware 5.00m33-6. can anyone tell me how to downgrade my psp to firmware 1.50 without a pandora battery? i also have a psp running on firmware 5.00m33-4 and i want to downgrade it to 1.50 too...

so I found this psp phat the other day, and I was trying to make a update it, but somehow, it got bricked I got my psp slim (model 2004) though, so I decided to unbrick it myself however I can't find anywhere how to do this, i've been looking it for...

ok, so i was on v6.35 PRO HEN and i installed a piece of homebrew called hellscat recovery flasher v1.65. with it, i managed to downgrade my PSP version to v5.00 m33-6 successfully. Now from here i decided to go a step further (like an idiot) and try...