I was able to upgrade Tazer firmware from 2.1.6 to 2.1.7 with no issues. In trying to upgrade to 2.1.8, I am unable to get the pc to recognize the Tazer. When I plug it in to USB it blinks fast red/green for a couple seconds. The it goes into a cycle of 4 red blinks every few seconds. I have Windows 8.1 64 bit. I have tried multiple times as I remember reading others having issues, but eventually working after several tries.
At the end of the ZPU manual is a section for "force firmware update". Follow that, it'll work. There was a bug in 2.1.7 that keeps the tazer from being auto detected by ZPU in some cases.
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