PSPSwampy's guide to uninstalling custom firmware.
WARNING:
As with any tools that FLASH your firmware - you MUST
1. know what you are doing
2. Have the AC power supply connected and have >50% battery life.
3. Be SURE you are prepared to risk bricking your PSP!
Requirements:
1 x PSP with on of these firmwares:-
Custom v2.71 SE-*
Custom v3.0 SE-*
Custom v3.02 OE-*
Custom v3.03 OE-*
1 x USB cable
1 x Copy of a
PSP Firmware v1.50 (USA) Update
1 x Copy of my
Custom_Firmware_Recovery_Pack.rar
(Which i put together because it's not been included with the firmwares since 3.02 OE-A)
Returning to Firmware 1.5 Instructions:-
1. Extract the contents of the
Custom_Firmware_Recovery_Pack.rar file to a suitable location.
2. Connect to PSP
3. Copy the contents of the MS_ROOT folder in the archive to the root of your PSP.
3. Copy your
PSP Firmware v1.50 (USA) Update to the X:\PSP\GAME\RECOVERY\ folder but rename it
UPDATE.PBP first!
4. Hard reset your PSP (Hold Power up until PSP turns off)
5. Power on PSP again and hold the R button (you will enter the recovery console)
6. Scroll down to "Run program at /PSP/GAME/RECOVERY/EBOOT.PBP" and press X
7. Read further instructions on the screen.
Note1: If you cannot boot your PSP, try to access recovery mode (HOLD R) because there is the option to enable USB there, and you will be able to copy all files needed using this.
Note2: (Obvious but likely to get forgotten) This will reset your settings (ie Nickname, WEP Keys and any other customisations)
IMPORTANT NOTE: Make sure you have actually got a 1.5 eboot, because if you flash it with something else by mistake you could be waiting a while to use homebrew again. (Or worst case, could brick your PSP).
PSPSwampy
Ok - if you find this guide useful,
do NOT reply with a thank-you message -
instead please click the 
icon to the left (under my username! on this post)
Last edited by PSPSwampy; 04-23-2007 at 10:20 PM.
Reason: Forgot to attach the rar file!