“Failed to get Device ID” in MPLAB 8 after using ICD3 with MPLAB X
MPLAB 8 menu > Debugger (or Programmer) > Settings > Configuration
Press “Manual Download” and select the .jam file (e.g. ICD3FW_012720.jam)
from Program Files (x86)/Microchip/MPLAB IDE/ICD3
Hey presto, it should update and then work correctly again.