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MSP-FET Blow JTAG Security Fuse

Other Parts Discussed in Thread: MSP430G2553, MSP-FET, MSP-FET430UIF, MSP-TS430PW28A

Hi there,

I am trying to blow the JTAG security fuse on an MSP430G2553 using an MSP-FET as the hardware and Elpotronics FET-Pro430 as the software. I understand that the 2xx series requires the TEST/VPP line to be connected as per the image below for SBW. However, once I connect that line I cannot seem to establish JTAG communication with the FET-Pro software or even Code Composer Studio. Disconnecting TEST/VPP allows me to flash the chip without issues. Could this be an MSP-FET hardware malfunction?



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