SLAU647O July 2015 – April 2020
If the MSP-FET does not respond to software commands or firmware updates, a cold boot is the last option to bring it back to operation. A cold boot is performed by connecting VBUS to the PUR signal of the MSP-FET host device (MSP430F6638) with a serial resistor.
To execute this procedure, the MSP-FET cover must be opened by unscrewing the four screws on its back (see Figure 15). Make sure that the USB cable is disconnected from the computer.
Next connect a cable or jumper to J2 for MSP-FET starting from version 2.0 (or J5 for older versions) (see Figure 16 and Figure 17).
Plug in the USB cable while the jumper is on J2 (or J5). After boot, remove the jumper from J2 (or J5). The MSP-FET is recognized by the device manager of the OS as an HID-compliant device. The green LED should be on.
Start the IDE while the MSP-FET is in recovery (HID) mode. When prompted (see Figure 18), confirm the request to recover the firmware and all following firmware update requests.