Update of Watlaa failed. And now cannot connect anymore/turn on?
If a software upload is interrupted the watch can go into a failsafe mode. This means that Watlaa app may not be able to connect to it anymore. The fix is to use nRF connect app to complete the installation as explained in the update instructions here.
Please note that the name of Watlaa can have changed if update fails. It can be anything like “WatlaaDFU”, “DFUxxx”, or any other. So you need to choose some of those when you re-install with nRF connect. Contact us if any issue.
The Watlaa may not turn on if update fails but it will still show in bluetooth list of nRF connect. Simply charge although charging is not indicated.