Wow. We asked about the meaning of all the contact sensor v1 blink variations years ago and never got a response. I doubt the firmware developers are even available. It’s pretty much a given that it’s dead, unless you want to wait years for capacitor discharge. I remember you posting in all the hopeful but futile megatopics starting with users attempting to reflash the board and devolving into conspiracy theories. I recovered one that sat unpowered for 2 years and 2 that sat for 3 years. I can’t believe it’s been almost 4 years since we figured out the cause of this issue. Seems like just yesterday: