Had a similar issue. We connected a phone via Bluetooth during delivery all work as normal. I connected a different phone a few days later via Bluetooth and all worked as expected. Off to the lake for our first endeavor. Once on the lake, tried to connect the phone we connected upon delivery. This did not work. Tried the phone I recently connected and would not work. The Medallion screen showed connected however the phone showed the spinning wheel. The phone never connected and eventually the Medallion screen locked up on the right side of the screen. Left side of screen still functional, ski mode on/off, RPM and MPH.
Tried numerous things with no successes. This is what ended up working for my situation.
* On both phones previously connected under Bluetooth settings “Forget This Device” mine was named RBH
* Turned off Bluetooth on both phones
* Turned off both phones
* Turned the engines off (Boat was running)
* Opened the back-rest bow seat cushion -in front of the helm. (Driver Side)
* Unsnap white covering behind the Medallion Screen to access behind the Medallion Screen.
* Locate Blue Ethernet cable connecting the Medallion screen and disconnect it.
* Turn off Battery Switch to off position
* Waited a minute or 2
* Turned Battery switch back to on position
* Waited another minute or 2
* Turned ignition to Accessory position (Far Left)
* Plugged Blue Ethernet cable back in under the helm.
* Medallion Screen Rebooted
* Turned Phone on that was originally connected upon delivery and enabled Bluetooth
* Choose Bluetooth on the Medallion Screen and was able to pair.
* Working correctly now
A few notes, the two times connecting phones for the first time was when the boat was not running. Ignition was on Accessory position, to the far left.
When I had the problem, (screen locking up) boat was running. No idea if this had an effect on my issue, just an observation.