MPLAB PICkit 4 Help

How to Use the Hardware Tool Emergency Boot Firmware Recovery Utility

WARNING

Only use this utility to restore hardware tool boot firmware to its factory state. Use only if your hardware tool no longer functions on any machine.

The debugger may need to be forced into recovery boot mode (reprogrammed) in rare situations. For example, if any of the following occurs when the debugger is connected to the computer:

•	If the debugger has no LED lit.

•	If the procedure described in “How to Invoke the Bootloader Mode” was not successful.

You must use MPLAB X IDE v4.15 or greater to use the emergency recovery utility.

Carefully follow the instructions found in MPLAB X IDE under the main menu option Debug>Hardware Tool Emergency Boot Firmware Recovery.

Figure: Selecting Emergency Utility

Figure: Emergency Recovery Button shows where the emergency recovery button is located

Figure: Emergency Recovery Button

If the procedure was successful, the recovery wizard displays a success screen. The MPLAB PICkit 4 will now be operational and able to communicate with the MPLAB X IDE.
If the procedure fails, try it again. If it fails a second time, contact Microchip Support at
https://support.microchip.com.

Microchip Support Help Updated: 2019-09-24 09:36:23Z Help Page: 38