I have been running into the same problem. I’m on an out of town project right now and I have 3 Tstat-8 stuck in ISP mode. When I ran into this when I was in town, I tried the same thing on my lab gear. I kept getting the interruption error when using a Tiny Brother and Little Brother but when I used the Big Brother I was able to update the Tstat. I haven’t been able to update Tstats on a job site now for about a month.
My T3000 software is the most current also.
Bret
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