I have a dead BMV-712 unit. It will not receive a firmware update from my Samsung S7 Edge Android phone, which I always use to update this and my MPPT 75/15 solar controller, and no buttons respond. The Victron Connect app reads 0v and 0%. When I load the app and select the BMV-712, it prompts immediately for a firmware update, gets to 80%, resets to 30ish% and just sits there for about 10 minutes before failing with a #31 error. The BMV-712 device just says "BT200" on the display and is otherwise totally unresponsive from it's button panel. I've gone through all the troubleshooting steps in the manual to no avail. I've tried a 2nd Android Tablet that lives in my truck and used to monitor nad update this device but it just reads 0v and when I try to update firmware, the next screen is just blank. My MPPT controller works great with both Android devices.
How do I work the warranty to replace this unit? I purchased from Amazon.com on June 4, 2018