– Is this purchased from TI directly or from some valid distributor?
– Please provide the LTC on the device. The device marking on the chip will show this information.
– What is the percentage of failure? Are there chips that work?
– Have you tried other debug probe? I see that Jlink probe is used. Do you have other probes (eg. XDS110, XDS200) that you can try too. Just to make sure it is not a debug probe issue.