Shorting a EEPROM chip

[Peter9DO]

Re: Shorting a EEPROM chip

When i use the calc i get dgm8mqf1 as your master password.

Worth a try.

Hell yea it's worth a try, thanks! I'll give it a shot as soon as I get home from work tonight. Thanks again for the help!

[gilly1984]

Re: Shorting a EEPROM chip

Hell yea it's worth a try, thanks! I'll give it a shot as soon as I get home from work tonight. Thanks again for the help!

Try all 3 and let us know the outcome

[Peter9DO]

Re: Shorting a EEPROM chip

Nope, none of the codes worked... I tried that one being case sensitive and then again just letting it be all lowercase. I got nothing.

hi i should be able to help you i have to software for this very kind of issue. when you type the password wrong three times it should go into lockout and give you error number i need that number to generate you a master password, this is how most modern bios run, some just have a master password for override. i need to know who made your bios if you can get that info for me as well.

Eg. Phoenix,American Megatrend etc...

I noticed on the start-up it shows Phoenix Technologies, so I'm going to say that the BIOS is Phoenix A08. I didn't see that before. I don't know how much that's going to help in this situation though. I was looking at some EEPROM programmers, even though I know it's not worth the investment of even $30, and the EEPROM technology alone is outdated, this has become personal with this laptop. I'm debating to pick up a programmer, and a new chip and just program a new chip with a fresh BIOS install. Again, I know it's not worth it, the laptop in perfect working condition is only worth about $50 - $60, on a good day I might be able to get $75 for it. Again, I can't thank all of you enough for all your help with this though.... I'm sure you can understand my frustration with this. I have tried everything in the book on this computer and nothing will work and this is why I want to go all in and just program a chip because I don't want this one to walk away with the win. Laptops are not supposed to give me a challenge, so I don't know what this one is thinking! lol!

Again, thank you everyone for all of your help! It really is much appreciated!

[larrymoencurly]

Re: Shorting a EEPROM chip

I was looking at some EEPROM programmers, even though I know it's not worth the investment of even $30, and the EEPROM technology alone is outdated, this has become personal with this laptop. I'm debating to pick up a programmer, and a new chip and just program a new chip with a fresh BIOS install. Again, I know it's not worth it, the laptop in perfect working condition is only worth about $50 - $60, on a good day I might be able to get $75 for it.

You may want to check http://www.FlashROM.org because their free software allows lots of different devices to be used as EEPROM programmers, not just motherboards but also video cards and hard disk controllers. I've done it with one of the listed supported devices, a generic Silicon Image SiL680A PCI HD controller (desoldered the UVPROM BIOS chip and installed a socket, but I used Uniflash software. Those cards are as cheap as $3-5 on eBay and are just like the ones selling for $15-35 elsewhere. They also support both 32-pin parallel flash and 8-pin serial flash chips, but not at once, and a diode and capacitor have to be added. Also there's a size limit of 512KB, at least for the serial chips.

[Peter9DO]

Re: Shorting a EEPROM chip

I was in the air on either making one out of my Arduino or just buying one:
http://www.ebay.com/itm/221091725115?

I have some PIC chips that need programming as well, I have no clue how to program chips but there is only one way to learn and tht's doing it. Which for as cheap as $60 it's not to much of an investment if it just sits around my office collecting dust.

[gilly1984]

Re: Shorting a EEPROM chip

This is taken from a website offering unlocking.

"To remove Dell Bios password manually: If you are Computer technicians with
superior knowledge, open the laptop, and find the Chip 24C02 on the motherboard,
and Short circuit the legs 3 and 6 during booting, See picture attached, This
same chip is located in different position in different dell laptop motherboards, Using
a bent paperclip at an angle short circuit pins 3 and 6. when the 24c02 bios chip
is not found you may also look for chip 24c04 and 24c05 Short circuit during
booting ."


It then says

"When Short circuiting legs 3 and 6 fails, you may want to try short circuit legs 4
and 5, additionally try jumping legs 3 an 7, but do know this, if you use this
information you are doing it at your own risk, it is dangerous, and you may burn
the motherboard, and we are not reponsable for anything,
we recommend buying our master password to unlock your dell laptop.

With the laptop turned off, position the bent paper clip on the Bios chip proper
legs, and than turn on the laptop, this will cause a short circuit in the Bios chip
and reset the password."

edit; Ignore all that above, just read your first post again.

Edit again; Just noticed you tried different pins (2&7 4&5 3&6)

Try also 3&7

[gilly1984]

Re: Shorting a EEPROM chip

Oh and i just did the keygen again, but this time inputted your service tag in all lower case and it has given me this password.

67zhyvao

So please try it before you fry your mobo.

Also, what does your sevice tag end in?

fwthj11-595B
fwthj11-2A7B
or
fwthj11-D35B

[vinceroger69]

Re: Shorting a EEPROM chip

can you also try this code? nnnnn7ln

[Peter9DO]

Re: Shorting a EEPROM chip

I will give it a shot! Strangely enough there is no extension off of the service tag. Hopefully one of these will work I will try 3 (non-inverting input A) & 7 (Output B) on the 24C02W6 to see if this will do anything. Again, I'm going to have to do this later tonight when I get home from work, so I will post the results a little later. By the way if the board fries, it is what it is! It's useless the way it is now, so it would save me the problem of continuing wasting my time on this old piece of garbage!

[gilly1984]

Re: Shorting a EEPROM chip

I will give it a shot! Strangely enough there is no extension off of the service tag. Hopefully one of these will work I will try 3 (non-inverting input A) & 7 (Output B) on the 24C02W6 to see if this will do anything. Again, I'm going to have to do this later tonight when I get home from work, so I will post the results a little later. By the way if the board fries, it is what it is! It's useless the way it is now, so it would save me the problem of continuing wasting my time on this old piece of garbage!

Its not useless, what is the password stopping you from doing? Is it there when you first switch it on?

I had a latitude d630 with password on it, but it just stopped me getting into the bios, laptop would still boot to windows.

Got my master the same way i am trying for you?

I also read on my travels for you about a guy that had a laptop with password on it, he tried the keygens to no avail, he was then told that his model has been known to have a bug in the bios witch stops the master password being recognised?

[gilly1984]

Re: Shorting a EEPROM chip

Pinouts, just in case someone knows what to jump.

[trebo]

Re: Shorting a EEPROM chip

couple of things I think is worth a mention here
.
I have read inside the forum that the keygen passwords must be entered on a Qwerty keyboard , and followed with control and enter (not 100% sure)
.
Also read somewhere today that that Phoenix done the bios up untill A04 and then Dell took it over from A05 onwards
.
There is a recomended update for your Latitude C840, from A08 to A13 found in this link
http://www.dell.com/support/drivers/.../latitude-c840
Also may help is this link
http://www.dell.com/support/drivers/...ww1#OldVersion

[trebo]

Re: Shorting a EEPROM chip

Just been reading back on this thread, missed first time (Configure Password field)
Thats why the Keygen cant sort it for you

[gilly1984]

Re: Shorting a EEPROM chip

Try what this guy did, he says something about holding the wires together and then tapping the wires together.

All clear in the vid.

Puts it into manufacturing mode.

http://www.youtube.com/watch?v=5JqB4lkVxkA

Please tell me off if vid is disallowed.

[vinceroger69]

Re: Shorting a EEPROM chip

Try what this guy did, he says something about holding the wires together and then tapping the wires together.

All clear in the vid.

Puts it into manufacturing mode.

http://www.youtube.com/watch?v=5JqB4lkVxkA

Please tell me off if vid is disallowed.

thats a good video i have used this myself to clear admin passwords but could not find the video link i used lol i took me about 3 attempts each time so do keep trying it does work as i brought a used board of ebay with a admin password on worked 100% ok clearing it

[Peter9DO]

Re: Shorting a EEPROM chip

Try what this guy did, he says something about holding the wires together and then tapping the wires together.

All clear in the vid.

Puts it into manufacturing mode.

http://www.youtube.com/watch?v=5JqB4lkVxkA

Please tell me off if vid is disallowed.

HOLY SHIT!!!!!! IT WORKED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Thanks man! Good find, on the link! I can't thank you enough! I'm still in total disbelief. It took me a couple of times, but it does put the BIOS chip into manufactures mode... Now I just have to take a look to make sure all the ports and everything is working! Thanks again bro!

[gilly1984]

Re: Shorting a EEPROM chip

HOLY SHIT!!!!!! IT WORKED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Thanks man! Good find, on the link! I can't thank you enough! I'm still in total disbelief. It took me a couple of times, but it does put the BIOS chip into manufactures mode... Now I just have to take a look to make sure all the ports and everything is working! Thanks again bro!

You're welcome

[Peter9DO]

Re: Shorting a EEPROM chip

the crazy part about that working is that was the first 2 pins that I jumped, I just didn't hold them and then start tapping them together as described in the video. You know, i'm going to have to take another look at the insides because, I don't seem to be getting any juice to the USB ports. So, this computer and I will be going for round #2! Yeeeeaaaaa! Lol!

[Peter9DO]

Re: Shorting a EEPROM chip

I don't want to be ungrateful for everybody else's help on this, so thank you to everybody that gave me codes, or tried to help me through the process.

[Jonse04]

Re: Shorting a EEPROM chip

hello good people!
would anyone give me a solution to this sony vaio model PCG-81313M bios password that has practically locked me out of it i tried everything from shorting the 24c02A chip to trying to find a password generator for the 5x4 decimal digits which i found none for sony.
Please help!!