Please
visit the Home page
for new developments
Instructions
on how to actually unlock your ThinkPad (TP) are in the User's
Guides
EEPROM
Location and Type
X61 X61s and X61t EEPROM you treat it as a
24RF08
Locating the X61 connection points
Switch the X61 OFF.
You should have already downloaded the
hardware Maintenance Manual for your ThinkPad model, if you have not done so
use the link below to download it now,
Download
the Hardware Maintenance Manual (HMM) for your TP model
The links above are to the Lenovo site, if it doesn't
work, don't panic, it isn't broken, their site is shut down daily for
maintenance and at those times they display spurious messages like the page
you requested cannot be found, wait a good while and try again.
SCROLL DOWN this page
to see
ALTERNATE connection points on different versions of the System Board
There are different versions of the System
Board.
Some versions allow access by simply removing
the keyboard.
Others require completely dismantling to access
the connections on the underside of the System Board.
Review the connection points on this page
BEFORE deciding how much dismantling you need to do.

Once you have your HMM search the manual for
"Removing and replacing a FRU"
Scroll down to the section on Keyboard, remove
the keyboard and the top frame around the keyboard.
Remove the module in the middle of the image above to reveal
the location of the PS08 Eeprom
Do not use the GND connection point shown
below, it is much easier to use a clip connected to any of the large metal
covers or the Heatsink, more on GND connection at the end of this page
NOTE:
VCC is NOT connected, the ThinkPad
supplies power to the eeprom later on we will switch on the TP to analyse
the eeprom.
All the eeprom images are on this page are oriented the
same way

If your X61 does not match the images
above then continue on this page
In the Hardware Maintenance manual
scroll down to System Board, follow the instructions in the
manual to remove all the other FRUs to gain access to and remove the
System Board.
You need to access the pads of the ATMEL
8356908 chip illustrated below.
Note: SCL is the 3rd pin back from right
hand the end, SCL pin is marked RED in the photo below.

A different System board, ATMEL
8356908 - no need to butcher the black plastic as it can be easily
lifted up out of the way, stick the black plastic back down when you are
done.

ATMEL
8356908


The blue object is NOT part of the X60s
System Board, was used to prop up the board during scan



I receive many emails asking about the GND
connection, in reality it is very simple, you use some kind of a clip so
that you don't have to hold it in place, you DON'T HAVE 3 HANDS and there
are 3 connections, GND SDA and SCL, so have a clip for GND, then you can use
the 2 hands YOU DO HAVE to hold your SDA and SCL probes in place.
Almost any large piece of metal or the screws
for the external connectors of any ThinkPad are a good GND connecting point.
Anyway a picture is worth a thousand words
Click
here for pictures of GND Connections
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Basically
you make the System board functional outside of it's case
[IF you had to remove
the System Board] which includes mounting heat sink and fan on CPU.
Once
you have taken care of the GND connection.
You
push the sharp probes onto SCL SDA , this is the reason you need 2
persons, not enough hands to hold the probes and run the software.
This is not easy, you will need to have the Keyboard [and
optionally the LCD] plugged into the system board in such a way that none
touch any contacts on the system board, use paper as an insulator to keep
things from electrically shorting out, later you will need to plug in the AC
adaptor and switch ON the TP, then you will need to hold 2 probes in place
to the SCL and SDA points on the system board.
See my page on Options
for Clips and Probes including making your own probes.
This page ONLY describes how to connect
the KeyMaker Interface to the EEPROM.
The instructions on how to Recover or
clear a Supervisor password are in The "User's
Guides" click here

Assembling your TP - AFTER - you have finished.
Follow the Hardware Maintenance Manual [FRU System
Board], very carefully, double check screw type and size for each
individual module. Assemble the TP in the reverse order used to
dismantle it.

If you have any questions, email Joe at

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