34w ago - Following up on their
previous release, French developers
Dev-Team-SPT / ARCH have released a PS3 CFW CEX Arch 4.21 Beta Custom Firmware for those with flashers who don't mind experimenting.
To quote, roughly translated: To install this CFW you need to be on Firmware 3.55.
Beta version features:
- Bluedisk Core_OS patched CFW to 4.25 OFW aim_spu_module.self
- Consistent backup games 4. + Or original games
- SEN original connection
- Spoof 04.25
- Compatible FckPSN
- Ca.cer version 4.25 (except CA27.cer)
How install:

Warning:
- Do not install if the console has received a downgrade earlier
- Do not install console-DEX
- Install OFW from 3:55
Steps:
- Download and install the official firmware 3.55: http://www.filefactory.com/file/c3f2a75/n/Firmware_officiel_3.55_Retail.rar
- Prepare a USB stick formatted in FAT32 and create a folder called PS3, then in that same folder, create another one called "UPDATE" in which to copy the file (PUPs should be renamed PS3UPDAT.PUP).
- Connect the USB to the console and turn it on.
- Install 3.55 OFW through the XMB
- Once the firmware is istallatoo, download and unzip CFW 4.21 Arch
- Replace the PS3 folder on your USB stick into one file provided by the CFW Arch 4.21: http://www.filefactory.com/file/5jq9mdw4njqd (CFW Arch CEX 4.21 Finale version v0.1 PS3FAT / CFW Arch CEX 4.21 Finale version v0.1 PS3SLIM)
- Connect the USB stick to the USB port furthest to the right of your console and start the console in recovery mode
- Select option 6 (System Update), and follow the instructions that appear on the screen.
- Once finished, enjoy the CFW 4.21.
Update: They have now released (via ps3-solution-pour-tous.doomby.com/blog/news-ps3/cfw-arch-4-21-finale-version-0-1-for-all-ps3.html) PS3 CFW Arch CEX 4.21 Final v0.1 for both PS3 Fat and Slim consoles (above) for those interested!
Note this will not work on 4.00. The only thing that you can do with that is downgrade it (if your ps3 is old enough) and then install this.
Ok messed around with it for about 10 mins. Turned it off and on again and seen what it looked like on the boot a well rsod. It is time to break out the progskeet and get it fixed. I will do some more testing tomorrow with this to see if it something I did or the Cfw did. Thanks