Firm ware help

[origa]

Just installed Firm ware on my psp and have been following this tut i found ....but the only problem is it says corupt data on the psp ...wat should i do some one help??? if u have a better firmware program please tell. here is the tut

Link:http://boardsus.playstation.com/play...ead.id=2748114


How to install 3.40 OE-A on a 1.50 or OE PSP


3.40 OE-A is the latest in custom firmware for the PSP, and includes the ability to customize XMB icons (although this is still in an early phase)
If you're installing this update from a previous OE firmware, make sure to set your game folder homebrew to use the 1.50 kernel in the recovery menu before running this update, or it won't install


1. Download and unzip 3.40 OE-A (complete Jak_Master upload).
2. Copy the PSP folder in the zip file you just downloaded to your memory stick. If you already have a PSP folder on your memory stick, either delete or rename the existing folder on your memory stick.
3. On your PSP, run the 3.40 OE-A Update Maker program. This program will create a file called DATA.DXAR
4. On your memory stick, go to the PSP/GAME folder. Move the DATA.DXAR file from the oeupdmaker folder to the 340oeflasher folder
5. On your PSP, run the 3.40 OE-A Firmware Install program. Your battery must be 75% full
6. The program will display an agreement. Press X to accept. This will upgrade your PSP to firmware 3.40 OE-A. While updating, make sure that the memory stick is not removed from your PSP and that the power to your PSP is not interrupted
7. Once finished, shutdown the psp and restart manually to 3.40 OE-A. You should then restore your default settings from the system settings menu