Actually, we need to call this process as patch which fixes some bug that found on CFW5.50. GEN-A. First, your PSP must install Custom Firmware 5.50 GEN-A, now you’re set.

PSP Custom Firmware 5.50 Gen-B Changelog

• Able to play copyright protected game such as Evangelion Jo (JP).iso
• Improved VSH menu
• Enable/Disable Pandora battery from VSH menu

Requirements:

• PSP Fat (PSP1000), and PSP2000 Only
• Already installed CFW5.50. GEN-A
• Battery must be at least 78%
• No need Pandora for update.

How to install Custom Firmware 5.50 Gen-B?

1. Download [download id="66" format="1"]
2. Unzip the package, and you will get the folder name “5.50-genB-update”
3. Connect PSP to computer via USB cable
4. Go to Setting >> USB Connection
5. Copy folder 5.50-genB-update to (Drive:)/PSP/GAME/
6. Disconnect your PSP from PC go to game menu, and you will find the icon for update.
7. Press X or O to run the update
8. Go check in System information and you’re done!