If Mptools shows a or "Fail" message:
: Clicking "Start" initiates the low-level process, which can take anywhere from a few minutes to an hour depending on the flash memory's health. Critical Considerations Firstchip Chipyc2019 Mptools
You must ensure the software version supports your specific controller. You can use a tool like ChipGenius to identify your controller before running MPTools. If Mptools shows a or "Fail" message: :