@largeroliker he estado buscando y llevás mucha razón, lo mínimo que he encontrado han sido modelos 3XXX.
Igualmente quería compartir con vosotros una noticia que he encontrado en ps3pirata.com (creo que no va contra las normas si pongo la fuente ¿no?) es de hace un mesecillo, pero como soy un cacharrero nato, a lo mejor me animo a hacerlo, me compro la super slim y pruebo a ver, buscaré más referencias por que no sé si es un método muy fiable ni tampoco sé el procentaje de riesgo de BRICK

Está en inglés pero básicamente dice que se puede instalar un CFW en CUALQUIER PS3, con CUALQUIER OFW, mediante el E3 flasher y la modificación de código de la PS3...
Today, kill3r has contacted us sent us a tutorial created by raymanvtwo on how to install CFW on PS3′s which can’t downgrade to 3.55. We are not responsible for any damage use at your own risk
Roughly Translated:
Firstly, ensure the validity of your dump, flow rebuilder is the best in the field. Also check that all your fichiez is a different size of 0 bytes (including bootloader_0). If there is a problem, it will help you out.
Now that you have your dump, to see if the offset 200 if you or IFI FI.I with HxD as hexadecimal héditeur. If you IFI, go to the next step.
If you FI.I, open flow rebuilder Select “Byte reverse and extract a NOR dump file.” and then made your dump “execute operation”.
If you get an error is that your dump is not good. écire Before you dump, you must make new bytes reversed under penalty brick your PS3 but it will be easily retrievable.
Now, you need winskeet and patch ( here and here ). Winskeet open, go to the tab “patch” in “input file”, select your dump file and select the patch. Txt file previously downloaded the archive. Made apply and save your dump patched.
Now write your dump patched (do not forget to do it again if you had reversed bytes FI.I at the top).
Now your PS3 Decomposition Systems is no longer able to work, do not worry, this is normal.
Go to the recovery menu (it may be that your PS3 shuts herself at the first attempt, the second should succeed).
En suite install CFW Rebug 4.21.1 (available via the “system update”.
If after several attempts you are unable to install Rebug CFW 4.21.1, format the HDD, then reinstall the switch on the PS3.
On USB stick with FAT32, put the.
Rebug 4.21.1 CFW PUP (available here and here ) in x: \ PS3 \ update and rename it to PS3UPDAT.PUP.’ll get a message asking you to connect a joystick and press the PS button, then follow the plug your USB drive, make sure there is no disc in the drive BR, then press START and SELECT at the same time for 3 seconds and follow the instructions to install your CFW.
Enjoy
PS: This method has been tested with the Rebug CFW 4.21.1, if you use another CFW, it will be at your own risk.
This method has been tested on a PS3 with the metldr “anti CFW 3.55″ It should work on any console.
Please give me a feedback on the effectiveness of this method and possible problem.
Thanks also include PS-addict and I and keep the links (especially for financing of other project although minimal) if you publish on your sites this method.
Finally, thank you to the work of the “Three Musketeers” and the Rebug team has allowed me to patch
Felices fiestas!!!
No son nuestras cualidades las que nos hacen grandes, si no el uso que hacemos de ellas.