Rogero 4.21 CFW Released!

IMPORTANT NOTICE:
THIS IS ONLY USEFUL FOR THOSE ALREADY ON 3.55 CFW
BUT THIS IS A STEP FORWARD IN PLAYSTATION HACKING

The scene has exploded in recent times and finally the days has come where we no longer need to be on 3.55!

4.21 CFW has been released due to the recent leaking of the lv0 exploit showing the private key for 4.21.

lv0 Exploit

[lv0ldr]
type=SELF
version=0004002500000000
self_type=LV0
erk=CA7A24EC38BDB45B98CCD7D363EA2AF0C326E65081E063 0CB9AB2D215865878A
riv=F9205F46F6021697E670F13DFA726212
pub=A8FD6DB24532D094EFA08CB41C9A72287D905C6B27B42B E4AB 925AAF4AFFF34D41EEB54DD128700D
priv=001AD976FCDE86F5B8FF3E63EF3A7F94E861975BA3
ctype=33

Additional Information:
1- This CFW doesn't have LV1 checks disabled and can't be installed on Downgraded PS3 consoles unless you have Dehashed/Reset Syscon Properly

2- Always make a NOR/Nand dump using multiMAN or memdump before installing this CFW to have a recovery backup in case of any bricks.

3- Always use the Recovery Menu while installing this CFW to avoid possible bricks (XMB update works, but Recovery Menu is safer).

4- TrueBlue CFW users must update back to OFW3.55 before installing this CFW to avoid possible bricks.

Download Links (Remove Hyphen):
www.send-space.com/file/49iddc
www.media-fire.com/?hrvvaqh7l5gzss9

Fanks , since nobody appreciated Your work

If you're running the current version of ps3, can you install this CFW?

Originally Posted by MusiK

If you're running the current version of ps3, can you install this CFW?

No you cannot as Sony patched that method with the 3.56+ updates. You must be on 3.55 and if you downgrade or on a downgraded PS3, you must rehash your syscon in order for it to work.

Originally Posted by REVIVE

No you cannot as Sony patched that method with the 3.56+ updates. You must be on 3.55 and if you downgrade or on a downgraded PS3, you must rehash your syscon in order for it to work.

how do i downgrade?
i bought my ps3 2 years ago

Originally Posted by MusiK

how do i downgrade?
i bought my ps3 2 years ago

As above you will need an E3 flasher to downgrade, or buy a PS3 that already has 3.55 installed.

Originally Posted by REVIVE

As above you will need an E3 flasher to downgrade, or buy a PS3 that already has 3.55 installed.

oh... forget it then... thanks

Originally Posted by MusiK

oh... forget it then... thanks

No problem, although if you do plan on looking into this in the future than I would recommend buying a second PS3 with 3.55 as it is much easier and more beneficial in the long run.

Originally Posted by REVIVE

No problem, although if you do plan on looking into this in the future than I would recommend buying a second PS3 with 3.55 as it is much easier and more beneficial in the long run.

its useless buying another ps3 just for this... would just buy the thing to downgrade and do it myself

Originally Posted by MusiK

its useless buying another ps3 just for this... would just buy the thing to downgrade and do it myself

You could do what my cousin and I used to do. Back when the MW2 modded lobbies 1st came out, we'd charge $25 PSN for a lobby. We would rank up the buyer and 3 of their friends and they can have the infection.

We made about... $300 in a week?

OT: Thanks + Rep for the best console minion evarrrrr.

So this is basically CFW for 3.55 systems. And if I plan on purchasing or downgrading a PS3, I could host lobbies and trophy hacks, etc?

Originally Posted by Dr. Sheldon Cooper

That is correct, but the firmware is 4.21 CFW, but it only works on 3.55 because the Syscon hashes are different to current ofw

Originally Posted by REVIVE

That is correct, but the firmware is 4.21 CFW, but it only works on 3.55 because the Syscon hashes are different to current ofw

So if the hashes were to be the same, we would be able to jailbreak our 4.21?

Originally Posted by Dr. Sheldon Cooper

So if the hashes were to be the same, we would be able to jailbreak our 4.21?

Not quite, if they were the same it would be easier but there are other factors as well

Originally Posted by Dr. Sheldon Cooper

So if the hashes were to be the same, we would be able to jailbreak our 4.21?

In 3.56, Sony fixed the metldr exploit (hardware) by wrapping its security around bootldr (hardware).
In 3.60, Sony fixed the ECDSA Algorithm, making the variable which was supposed to be randomly generated work as intended.

The ability to sign files such as PUP, PKG, etc., is lost because of the change of private key (not hardcoded) and the fix of ECSDA prevents people from getting the key again.

Therefore, CFW installation on firmwares 3.60+ is literally not possible. If ECSDA is cracked, global security will be compromised as numerous other databases, websites, etc. are using ECSDA.

4.31 Downgrade to 3.55, any idea?

Rogero 4.21 CFW Released!

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