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  Topic: [Tutorial]How to unlock [older] ThinkPad supervisor password
carl0s

Replies: 377
Views: 1527608

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Thu Jun 28, 2007 11:34 am   Subject: [Tutorial]How to unlock [older] ThinkPad supervisor password
It's been a while since I've been here Smile

Anyway, I thought I would post up a picture of the interface as I built it, because I was pleased with how simple it was in the end.

No need for circuit ...
  Topic: A21 Atmel, where?
carl0s

Replies: 2
Views: 13800

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sun Jan 22, 2006 3:28 am   Subject: A21 Atmel, where?
Perhaps..
Almost is not enough! You should probably have the system board in your hands, and have a very bright torch to read the chips.

However, I'm sure someone here has done an A21 before and w ...
  Topic: Driven-I2C Circuit - how does this look?
carl0s

Replies: 9
Views: 28384

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sat Jan 21, 2006 12:31 pm   Subject: Driven-I2C Circuit - how does this look?
hmm that's very interesting, but I can't see any other 2402, other than the one which I read sucessfully many times with the SimpleI2C circuit. That chip has now suffered much damage around the pins a ...
  Topic: Driven-I2C Circuit - how does this look?
carl0s

Replies: 9
Views: 28384

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sat Jan 21, 2006 3:59 am   Subject: Driven-I2C Circuit - how does this look?
It was IC1103, marked "2402", made by ST. Strangely though this was a 512byte eeprom, and was read as a 2404. The password was not decryptable but I wrote six bytes of 00 at offset 0x100 and all was w ...
  Topic: Driven-I2C Circuit - how does this look?
carl0s

Replies: 9
Views: 28384

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sat Jan 21, 2006 3:20 am   Subject: Driven-I2C Circuit - how does this look?
IT'S WORKING!! I LOVE YOU VICTOR!!! IT HAS READ THE OTHER EEPROM WHICH WOULDN'T READ BEFORE, AND THIS ONE HAS READABLE INFORMATION IN IT!
  Topic: Driven-I2C Circuit - how does this look?
carl0s

Replies: 9
Views: 28384

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Sat Jan 21, 2006 2:48 am   Subject: Driven-I2C Circuit - how does this look?
Help! It doesn't work Sad Have I used an incorrect type of capacitor? I have used 1uF, but should have used electrolytic capacitors instead? The diodes are the correct way around I think.. Sad Please h ...
  Topic: Driven-I2C Circuit - how does this look?
carl0s

Replies: 9
Views: 28384

PostForum: IBM/Lenovo ThinkPad Password Help Center (EN)   Posted: Thu Jan 19, 2006 3:20 am   Subject: Driven-I2C Circuit - how does this look?
Does there look to be anything wrong here? I haven't got the SDA/SCL/GND wires coming off it yet, as I'm not finished and it's bed time.
It seems strange that I'm putting all the power directly into ...
 
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