Tried to upgrade firmware.
During upgrade, device stuck in rebooting for more then an hour.
Finally, I can't communicate with device.
Upon start power green/red light toggles and all lights turn off later.
I guess I need factory reset.
I'm in the same spot - original Flux and firmware update stops the power, cadence and speed data. Can connect to the device via BT or ANT+ but nothing more. No problems loading the firmware, just no data. I was told to unplug for 1 hour to reset. I'm now waiting with 20 mins to go. Will update...