![]() There is a strict time window after releasing the button that the board can be accessed, so give it a few tries. In MPLAB IPE you would need first enable "Advanced Mode" before being able to select "Manual Download Firmware". Then try to manually download the firmware (again enter bootloader mode using the button) and then go to "Settings" -> "Manual Download Firmware". If the connection still fails re-try the procedure at least few more times. Make sure you are using latest version of MPLAB IDE or MPLAB IPE. Then open MPLAB or MPLAB IPE and attempt the connection again. ![]() There is a fix for this problem - enter bootloader mode - disconnect the PIC-KIT3 from the USB press and hold the small black button (programmer-to-go button) connect the PIC-KIT3 to the USB release the button. It happens more frequently when you often change the versions of MPLAB that you use (the latest PIC-KIT3 firmware versions in MPLAB 8 differ a lot from the latest PIC-KIT3 firmware versions in MPLAB X or MPLAB IPE). The firmware update might fail due to different reasons. This problem might appear after a failed firmware update.After this the PIC-KIT3 gets listed with exlcamation mark in "Windows Device Manager" and reports the error - "This device cannot start. Hello, I attempted to use PIC-KIT3 and then the connection failed.Note that such a cable is not included in the package. All PC USB hosts have a USB-A connector while the PIC-KIT3 has a USB-B connector so the cable should be a USB A-to-B type. You should have a USB type A-B cable to connect to a PC.
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