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


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95w 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 and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!

Comments 618 Comments - Go to Forum Thread »

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haze67's Avatar
#38 - haze67 - 110w ago
hi, hopefully anyone can give some feedback, tips

installed the manual ubuntu way from gitbrew guide
added the metldr from the ps3 into metldrpwn folder
transferred to root folder in ubuntu (rebug otheros - no ss patches)

in terminal:


it finished without a problem, and dumped couple files:
debug : pastie >> [Register or Login to view links]


does it look OK, pls anyone verify for me, or i can upload incase needed

dump 256kb (first 3 lines looks to be the eid_root_key?)
if OK, then "new file" in HxD, copy the 3 lines from dump and "paste write" into new file - save as eid_root_key.bin and move on from there?

eid0 4kb (all zero's-00)
mathldr
rvkprg

great stuff anyhow

and thx for any help

sguerrini97's Avatar
#37 - sguerrini97 - 110w ago
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.

sangimed's Avatar
#36 - sangimed - 110w ago
noob question: It's possible to do that with my ps3 slim ofw 4.20 ?

sguerrini97's Avatar
#35 - sguerrini97 - 110w ago
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?

rikukh3's Avatar
#34 - rikukh3 - 110w ago
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

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