Interesting developments in the world of PSP firmwares this week, with Team Wildcard managing to reverse engineer Dark_AleX’s custom firmware 3.40OE. They have completed the reverse engineering to give themselves a solid platform on which to build new firmware versions.

It seems that the reversal has worked successfully, but due to a leaked version of their new firmware appearing on the internet, Team Wildcard have made an official release, titled 3.40LE (Leaked Edition).

recovery menu – In addition to all the features previously offered by the 3.40 OE-A custom firmware, Team Wildcard brings us some great new features, such as:

* A sexy new SCEP-style recovery menu
* In-XMB configuration menu
* Auto-detection of the kernel needed for homebrew – no need for GAME150 and GAME340; just put it all in GAME

Video:

3.40 LE – Installation Guide
The installation overview should look very similar to the original OE firmware installation guide, thus installation should be a breeze for anyone who is currently on custom firmware. (Video thanks to xMATTx)

1. Look inside the ZIP file for the folder that corresponds to your current firmware – either Custom Firmware or Firmware 1.50. To install 3.40*, you have to be on one of these. If you’re not already on one of them, what are you waiting for? Downgrade!
2. Copy the *CONTENTS* of the MS_ROOT folder onto the *ROOT* of your memory stick. This means the place where the ‘PSP’ folder is. It’ll probably tell you that it has to overwrite the PSP folder. This is OK; just click Yes.
3. Download the 1.50 and 3.40 firmware EBOOTs. ( included below )
4. Rename the 1.50 EBOOT to 150.PBP.
5. Rename the 3.40 EBOOT to 340.PBP
6. Put both of them *in* the folder “X:PSPGAMEWildcard All-in-one Flasher”, alongside the EBOOT.PBP file. (X: is your PSP’s Windows drive letter.)
7. Go into the PSP’s Game menu, under Memory Stick, and run “3.40* All-In-One Updater”. The installer will build the 3.40* DATA.DXAR file, then launch the flasher to install it. Follow the instructions on the screen TO THE LETTER and you’ll be safe.

Via : PSPUpdates