Quote:After much work over the past few days, wee finally succeeded - wee have an easy-to-use downgrader for v3.03 PSPs!

Some ground-rules:

• This downgrader is for v3.03 firmware only. But if you have v2.81 - v3.02, no problem - you can just upgrade to v3.03 to use the downgrader.
  
• You need a copy of the unpatched GTA:Liberty City Stories UMD. No ISOs, no patched UMDs, not Vice City Stories. See here for some info on how to check if your version is patched. The most reliable way : the unpatched disks have the v2.0 firmware update on them.
  
• This downgrader is intended to enable homebrew. Homebrew is NOT the same as piracy. Don't be a thieving loser - buy the games you play.
  
• The downgrader will work on all current PSP hardware (TA-079 - TA-086). Patching of TA-082+ is automatic in the downgrader.
  
• You downgrade at your own risk. There is always a chance of bricking, although wee have done everything wee can think of to make this process safe.
  

Full instructions for downgrading are included in the Downgrader_HOWTO.txt file in the ZIP file. Read them carefully! You will need:

• The 3.03 downgrader package
  
• Official v1.50 Firmware Update EBOOT
  
• Official v3.03 Firmware Update EBOOT (only if your PSP is not 3.03 already)