Originally Posted by
JohnJ80
another alternative - I have a Hammerhead Karoo bike computer. While it has crappy navigation, it is android based and I run both Osmand and Komoot on it after sideloading them with the android developer tools. Because of the android ecosystem there is probably some android app that allows file transfer over Bluetooth or some other app to make this work.
Sure sounds worth looking into, John. Karoo has mixed reviews, but it may be getting better with updates. I'd try to see if it can be recognized as a Bluetooth device or if the adb connection method works.