A bit weird problem here. One RuuviTag worked fine with the latest 18.104.22.168 firmware but then without no apparent reason the red light came on constantly and RuuviTag app cannot connect it anymore. Troubleshooting done so far without help
• tried on a battery from working RuuviTag
• removing battery and putting it back
• trying resetting device and to enter DFU, but NRFconnect does not find it.
As an information that might be helpful, the electronics might have got a splash of water when rinsing the device with the lid not fully closed. Also, after reboot the red light blinks every 14seconds and then returns to constant red. This happens couple of times, and then red light stays on forever without blinking
I don’t have wired connection, but I think that might be the only solution to fix it. If somebody with access to devshield is willing to help, that is gladly welcome.