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Password Reset

This document explains how to reset the password on your KeyCarbon USB or your KeyPhantom USB.

Technical Level

This document is aimed at people with a reasonable technical level; this procedure involves opening up the case of the unit, and shorting two holes on the circuit board.


This procedure is very safe. You cannot damage the unit using this technique. If anything goes wrong, simply unplug the unit, then start again from step 1.

Technical Support

If you cannot perform this procedure, contact technical support. We can perform the procedure for you, at a cost of $20 plus shipping costs. Total time taken will be between 5 and 10 working days including shipping.

Step 1: Open up the Case

Open up the case of the unit.

You can use any method, the method we use is to insert the tips of needle nose pliers between the two plastic halves of the case, at the plug end, then slowly pull the handles apart to separate the two casing halves. The two halves should pop apart with a click.

Step 2: Short two holes next to EB

Locate the two holes next to the text "EB" (for Emergency Bootload") on the circuit board. These holes are also accompanied by the text "PL3". Short these two pins together electrically.

Anything conductive will work, including a paper clip or a piece of wire. We use metal tweezers with fine tips that can be inserted into the holes.

Step 3: Power up the unit

Plug the unit into the USB port of your PC. Because you have shorted the two pins next to the text "EB" (for "Emergency Bootload"), the unit is now in "Bootload Mode".

Step 4: Remove short

Remove the short between the two holes next to the text "EB".

Step 5: Bootload firmware into the unit to reset the password

Download and install the "KeyCarbon USB Windows Toolkit", from:

Unzip the custom "password reset firmware" to your Desktop.

When you have finished unzipping the file to your desktop, you should have a "reset_pwd_and_delete_XXXXXX_usb.ehex" and "reset_pwd_and_delete_XXXXXX_usb.dat" file on your desktop, where XXXXXX is the type of your unit ("keycarbon" or "keyphantom").

Run the "KeyCarbon USB Firmware Upgrade" utility, by clicking on "Start..All Programs..KeyCarbon USB Windows Toolkit..KeyCarbon USB Firmware Upgrade". This utility is compatible with the KeyCarbon USB and backwards compatible with the KeyPhantom USB. The list of compatible devices is on the front page.

Start the bootload as per normal. However, when it comes to the step with text "Please select the upgrade option from the list below", click the "Advanced" check box, browse to your desktop, then select the "reset_pwd_and_delete_XXXXXX_usb.ehex" file. This file resets your units password.

Continue the bootload. This custom firmware file will automatically reset the password for you. This has the side effect of erasing any existing keystrokes in the log.

Step 6: Bootload the original firmware back into the unit

Power down the unit by unplugging it from the USB socket.

Repeat steps 2, then 3, then 4.

Close down the "KeyCarbon USB Firmware Upgrade" utility.

Run the "KeyCarbon USB Firmware Upgrade" utility again, this time just clicking "Next" through the options to load fresh firmware into the unit.

Step 7: Test the unit

  • Close down the "KeyCarbon USB Firmware Upgrade" utility.
  • Power down the unit by removing it from the USB port.
  • Plug the keyboard into the unit.
  • Plug the unit into any USB port.
  • Wait for the device to be detected - this will take an absolute maximum of 30 seconds.
  • Open up "Wordpad", type "phxlog" - the menu should pop up. Click the plastic case back into place to finish the procedure.


If you had difficulty with these instructions, or the instructions were unclear, please contact customer support. We will answer your email within one business day. Alternatively, you can call us on our toll-free number.