The purpose of this software is to update the firmware of Infineon Technologies Trusted Platform Module v1.2.

Updating TPM via Windows 7

To run the TPM Firmware update tool, administrative privilege are required.

1. If you have the TPM Owner Password or the TPM Owner Password Backup File, proceed to 3.
2. If both the TPM Owner Password and the TPM Owner Password Backup File are not found, you will need to initialize the TPM Owner Password using the steps below.
   1. To initialize the TPM Owner Password, shutdown the computer and then turn on the computer while pressing F2 and enter to BIOS Setup Menu.
   2. Choose “Clear TPM Owner” from “Security” menu, then choose “Setup Default [F9]”, save and restart the computer.
   3. Run “tpm.msc” from Start Menu.  (Type “tpm.msc” at “Search programs and files”.) 
      1. “Trusted Platform Module (TPM) Management on Local Computer” appears.
   4. Choose “Initialize TPM…” from “Actions”.
   5. Choose “Restart” to restart the computer.
   6. Choose how to create the TPM Owner Password. 
      1. Usually, choose “Automatically create the password (recommended)”.
   7. Choose “Save the password...” and choose location to save the TPM Owner Password. 
      1. USB memory is recommended.
   8. After saving or printing the password, “Initialize” button becomes active. 
      1. Choose “Initialize” to start TPM initialization.
3. Right click IFXTPMUpdate_TPM12_v0443.exe; choose “Run as administrator”.
4. Check “Accept the terms of this license agreement”, and choose “Next”.
   1. If the AC adapter is not plugged in, a message will appear asking you to plug in the AC adapter and choose “Back” to return previous screen.
5. Check platform details and choose “Next”.
6. Provide the Owner Password. 
   1. If you have an Owner Password file, choose “I have the Owner Password Backup File” and specify the file location by pressing “Browse...”.
7. Choose “Update” to start firmware update.

Updating TPM via Windows 10

To run the TPM Firmware update tool, administrative privilege are required.

1. In case you have the TPM Owner Password or the TPM Owner Password Backup File, proceed to 3.
2. If both the TPM Owner Password and the TPM Owner Password Backup File are not found, you will need to initialize the TPM Owner Password.
   1. Run “regedit” from Start Menu.  (Type “regedit” at “Search programs and files”.) 
      1. “Registry Editor” appears.
   2. Clarify registry key [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\TPM] OSManagedAuthLevel, and record original key data. 
      1. Choose “Edit” – “Find…”.
   3. Type “OSManagedAuthLevel” at “Find what”, then press “Find Next”. 
   4. Clarify upper text shows “HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\TPM”, lower left text shows “OSManagedAuthLevel”, and take a note for the data. 
   5. After updating the firmware, this register key shall be restored, so do not miss to take a note.
   6. Double click “OSManagedAuthLevel”.  
   7. Change “Value data” to 4, and press “OK”.
   8. Run “tpm.msc” from Start Menu, and choose “Clear TPM…” from “Actions”.
3. Below screen appears.  Choose “Restart” to restart the computer.
4. After restart, BIOS warning message may appear.  Press [F11] to clear TPM and proceed.
5. Right click IFXTPMUpdate_TPM12_v0443.exe, choose “Run as administrator”.
6. Check “Accept the terms of this license agreement”, and choose “Next”.
   1. If the AC adapter is not plugged in, a message will appear asking you to plug in the AC adapter and choose “Back” to return previous screen.
7. Check platform details and choose “Next”.
8. Provide the Owner Password if requested.  In case does not appears, skip to 14.
   1. If you have an Owner Password as the Owner Password Backup File, choose “I have the Owner Password Backup File” and specify the file location by pressing “Browse...”.
9. Choose “Update” to start firmware update.
   1. Run “regedit” from Start Menu.  (Type “regedit” at “Search programs and files”.)  “Registry Editor” appears.
      1. Search registry key [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\TPM] OSManagedAuthLevel.  Choose “Edit” – “Find…”.
      2. Type “OSManagedAuthLevel” at “Find what”, then press “Find Next”.  Below screen appears after a while.
      3. Clarify upper text shows “HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\TPM”, and lower left text shows “OSManagedAuthLevel”.
   2. Double click “OSManagedAuthLevel”.  
   3. Change “Value data” as data noted to 5, and press “OK”.