Description:
multiMAN packs many facets: It's a Backup Manager, a File Manager, and a AVCHD and BDMV (Blu-ray) video player.

Included are two versions:

1. multiMAN 01.13.01 for 3.40 - 3.55
2. multiMAN 01.12.05 for 1.90 - 3.30

01.13.01 CHANGELOG

* Added support for CFW 3.55KMW and latest PL3 (kmeaw)
* Added check for proper access permissions
* [FW 3.55]: [R1] resets access permissions for selected game
* [Last Game] application updated
* [ps3serv] PC application updated
* Other fixes and improvements

multiMAN features:

* User defined options.ini (options_default.ini) to set various options
* Copy/backup progress bar
* Support and display for 7 devices (HDD/USB/BD/SDHC/MS/CF)
* Support for REMOTE PLAY via PSP or other compatible peripherals
* Animated icons and backgrounds
* Update check/download feature with [R3] button
* Support for COVER.PNG in AVCHD video folders
* Support for AVCHD activation from external USB devices
* Support for backup of AVCHD to internal HDD
* Support for playback of AVCHD and Blu-ray content from internal HDD
* Overscan support for DLP and CRT TV sets
* MP3/AC3 playback (play songs using the File manager from local and network locations)
* JPEG/PNG picture viewer (browse/view pictures using the File manager from local and network locations)
* HEX file viewer
* Support for at least 4 freetype fonts (user can change using [SELECT]+[R3] in game display modes)

Is update better and do you need lv2 to run for the games to work

Why doesn't cod4 work

So far i've only tried B.Ops and Dead Space.

soon gonna try

LBP 2, Dead Space 2, BFBC2, ME2 and GT5

Does b.Ops work?

To Update:

• Turn on PS3
  
• Load Multiman 1.13.0
  
• Put USB Drive into your PS3 (needed to download latest update) and Press R3 on the Controller
  
• Follow the On Screen Instructions.
  

Edit: New Update is 1.13.01 NOT 1.13.1 as pointed out by @djgringoboy2003.