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PS3 CEX to DEX Converted Units Bricking on OFW 4.30 DEX Update


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113w ago - It's been a few months since the last PS3 Debug / Test (DEX) Firmware 4.21 leak, however, we are now hearing reports that PS3 CEX to DEX Converted units are bricking when PlayStation 3 scene developers attempt to upgrade to Sony's OFW 4.30 DEX update.

This means if you have a converted unit and currently try to use the (not yet public / leaked) 4.30 DECH update you will get a brick... so consider yourself warned in advance!

What happens is when the bricked unit is powered on the light turns green for a few seconds, then you hear 3 beeps and its goes off.

It is suspected (unconfirmed) the reason why this bricking occurs in CEX to DEX converts on OFW 4.30 DEX is because the EID5 isn't changed, which is one factor separating the converted Retail to Debug / Test consoles from genuine and righteous DECH (DEX) consoles.

Finally, for those curious, the PS3 4.25 DEX update (also not publicly leaked yet) is not patched by Sony to brick converted consoles, so this would be the last PS3 Debug / Test Firmware you could update your converted console to (and go online with PSoN DEX) unless a work-around patch fix is discovered.




Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter, Facebook and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene and PlayStation 4 scene updates and fresh homebrew releases!

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#37 - sguerrini97 - 128w ago
sguerrini97's Avatar
I think that you need to downgrade at 3.55 because you can't encrypt / decrypt on 3.60+, and you can't dump or flash the NOR without a flasher.

#36 - sangimed - 128w ago
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noob question: It's possible to do that with my ps3 slim ofw 4.20 ?

#35 - sguerrini97 - 128w ago
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To boot a game backup can we use a game .pkg like in geohot's custom firmware? And do homebrews (like file manager and FTP server) work on 3.55 DEX?

#34 - rikukh3 - 128w ago
rikukh3's Avatar
There's some little mistakes in tutorial, like:

Use AES Encrypt to Encrypt EID0 Key Seed as data with EID Root Key as Key and EID Root IV as IV. The result contains from 0x10 to 0x20 the EID0IV and contains from 0x20 to 0x40 the EID0Key

Correct would be 0x10-0x1F EID0IV and 0x20-0x3F is EID0Key.

And:
Build the CMAC (OMAC1) hash of the decrypted EID0 Section from 0x00 to 0xA8 with EID0 First Section Key as Key. The calculated hash has to be the same as the bytes in the decrypted EID0 Section from 0xA8 to 0xB8.

0x00-0xA7 and hash is in 0xA8-0xB7

I did it, it works great. If you willing to try yourself, I suggest to download this flashCEX.7z/flashDEX.7z from first page and try to get the same encrypted eid0 from cex as in flashDEX.7z

#33 - GotNoUsername - 128w ago
GotNoUsername's Avatar
No you can't, you must be able to use linux and 3.56+ there is no way to use it , you must downgrade first (via Flasher).

If you figure it out and it worked for you can someone write a tut for the noobs or a batch (or script for open ssl ?)
Thx

 

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