I had a conversation with a TB tech and was told the problem with the early 3 series cards was they were not setup properly. He said instead of writing to the entire SD card they would write to the same block over and over again causing the cards to fail prematurely. This is a KNOWN issue with Crestron but instead of being proactive, they've decided to be reactive and just charge everybody for their mistake.?
The bigger issue was who was the idiot that didn't make the cards field replaceable???