Stages Indoor Cycling Service: How To Hard Reset the Stages Power Meter from Stages Cycling on Vimeo.

First, open the power meter battery door and take note that when the batteries are installed correctly, the positive end of the battery is facing out and visible. To perform the hard reset, remove and re-install the batteries backwards (with the negative end facing out toward the battery door) and hold the battery door down onto the batteries for about 5 seconds. Following this, remove and re-install the batteries properly, and then try to locate the power meter on the console and/or app.

Note: If you have a Gen. 3 Stages indoor power meter, 971-0103, it will have a hard reset button.
Please see the related article: How to hard reset the Gen 3. Stages indoor power meter.