EEPROM on Xbox 360 and xexdump utility Options

[MGSolidus2]

Well 360 Premium = Hard Drive, No EEPROM
360 Core = No Hard Drive, EEPROM

Someone should pull a little switch, de-solder the EEPROM from the Core, and put on the Premium Hard Drive. Then solder on the EEPROM for the Premium (guessing that there still is a spot for it). If it works, it shows that they both act as the holder if information, even tho the Core was proven to work without the EEPROM. If it doesn't, it means that one of them would cause a crossing of inconsistent data, meaning that they have to match or change for it to work.

[Monoxboogie]

cjack - I don't know if it would help you at all, but I have some TSOP sockets. I believe they are 40 pins. they worked fine with the original Xbox TSOPs. They solder on surface mount style, and allow you to easily pull/swap the TSOP chips.

I would gladly ship 2 your way. PM me an address if you believe they would be useful.

[chedabob]

whats the xexdump for? ive ran it and so far its been going for about 30 minutes and i now have a 80mb text file. wtf? the original file was 2mb

[cjack]

Thank you Monoxboogie but the x360 is a 48 pin tsop. I think that I 'll buy two sockets from RS soon ;-)

[TheSpecialist]

Wow, great work, cjack, respect !!

This post has been edited by TheSpecialist: Dec 4 2005, 08:45 PM

[thecheekymonkey]

2)I have swapped the dvd players just for fun and ..... the games won't boot....x360 tell you "To play this disc, put it in an xbox 360 console". So I think that x360 have some kind of segnature of his dvd player and won't boot games without it!

so what your saying is, that each 360`s dvdrom is `locked` to that xbox 360, and wont work in any other 360 (or at least the one you tried).

hmm, the plots thickens

[unspoiledpuma]

Interesting discovery! No, this chip does not hold the dashboard software. It only has room for 2048 bits of data. It has been speculated that this chip holds system-specific permanent data (serialnumber, region etc). It is quite possible the premium edition keeps this data on the hard drive instead.

Oskar

No because if you remove the Hard drive the xbox360 will boot normaly

[thecheekymonkey]

could it not just been a ply by M$?

trying to confuse the hackers?

Persoanlly i doubt it myself, but you just never know.

end of the day the 360 still bootswith or without it, on the machines that come with it, so what purpose does it serve?, i can see M$ putting something in there if its not needed, but it could be a ply to try and confuse.

[cjack]

Just checked DVD player labels that are very similar but .... 2 different rom versions!

Core:
DVD PLAYER model: GDR3120L (X800475-008)
Rom version: 0046DH

Premium:
DVD PLAYER model: GDR3120L (X800475-009)
Rom version: 0047DJ

It's possible that rom versions are not compatible........it'just an hypothesis!

[azninvasion]

how about trying to switch the rom's ont he drives, its worth a try I guess..

[1st time modder]

What about if you take the dvd-drive from the premium edition, switch the eeprom chips, and put it into the core edition. Just a though as then we could tell if it was looking for an identification number from the eeprom, so it would work with a core unit. Anyone thought of maybe ftping to an xbox 360 and seeing what is on the hd since it doesnt work on a computer.

[tiavo]

Pretty intresting stuff, good work cjack.

[StepsAscend]

Wonder if this "unused" eeprom could be a potential bus for a mod. I'd really like to know why its there. There has to be a reason.

[ppazz13]

could it not just been a ply by M$?

trying to confuse the hackers?

Persoanlly i doubt it myself, but you just never know.

end of the day the 360 still bootswith or without it, on the machines that come with it, so what purpose does it serve?, i can see M$ putting something in there if its not needed, but it could be a ply to try and confuse.

I doubt MS would have just put an extra chip in to try to confuse people. If the chip is just a dead chip used as a decoy, it's already been found (< 2 weeks after launch). Seems like a pretty lame idea for a decoy.

It must serve some kind of purpose.

[Bloodpainter]

Sigh havent posted in so long i feel wierd

Could it possibly be (bear with me here) that the eeprom that the eeprom could have 2 locations, like 1 eeprom on the eeprom chip and a backup on the hynix or the mystery chip. This would explain the core working without the eeprom chip.

Sadly i don't have xbox360 either but another cool experiment you could try is to solder the core eeprom onto the premium, and then try to switch the dvd devices. I know im speakin out of my ass cause i suck at soldering and i know i would never try this on my box, but seeing what youve done so far has been outstanding.

Just givin my 2 cents.

P.S. Keep up the great work crackerjack. You got me rootin for ya.