Read this First
KeyMaker X1
KeyMaker LCD
Buy Now
Delivery times
Firmware Update
Functionality Upgrade
Damaged Board
Safety Precautions
User's Guides
Customer Feedback
Reference Docs
New Page 3

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

X301 EEPROM you treat it as a 24RF08

Locating the X301 connection points

Switch the X301 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.

Once you have your HMM search the manual for "Removing and replacing a FRU" follow the instructions for Keyboard Removal.

Keep individual modules and their screws separate to make it easier to re assemble it correctly

You need to access the 8 pin chip, a P24S08 eeprom which is located on the top side of system board under the Keyboard in the middle of the System Board, you may need to lift plastic sheeting glued over it.

The eeprom is a P24S08 which is equivalent to a 24RF08, so any reference in the following text to a 24RF08 applies to this eeprom

NOTE:  VCC is NOT connected, the ThinkPad supplies power to the eeprom later on we will switch on the TP to analyse the eeprom.

See my page on Options for Clips and Probes including making your own probes.

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 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.


I make no warranty that any of my information is correct, or safe, or does or does not breach any warranty clause,  or anything else, it is up to you to decide if you will follow all or any of the instructions to recover the Supervisor Password from a TP. It is up to you to decide, I am not responsible for the results or for any consequential or incidental damages whatsoever.


If you have any questions, email Joe at

Hit Counter

Home Up Your TP Model TP HM Manuals Other Models Making probes GND Connection Soldering to EEPROM 390 390E 390X 600 600e 600x A20 A21 A22 m/p A30 A30p A31 A31p G40 G41 L412 L512 L520 R30 R31 R32 R40 R400 R50 and R51 R51e R52 R60 R61 R61i R500 SL410 SL510 T20 T21 T22 T23 T30 T40/p T41/p T42/p T400 T400s T410 T410S T420 T43 T43p T430 T500 T510 T520 T60 T60p T61 T61p W500 W510 W520 W530 X1 Carbon X100e X130e X200 X200T X201 Tablet X220 and X230 X30 X31 X300 X301 X40 and X41 X60 X60s X60Tablet X61 X61s X61t Z60 Z60m Z61 Z61m Z61T