I realized I hadn't taken recordings off the SD card in a long time, I removed the card from the unit, it was full - transferred files to my laptop and reinstalled the card. I wanted to flash the card (reformat) since that is something we should do often. I turned the bike on, waiting for wifi to join - that never happened. I removed the seat to look at the unit. After powering off and back on, I see just the green (camera) and blue (wifi) lights blinking alternately. The unit never progresses in allowing me to flash the card (256G samsung). I took a 16G card I have, formatted it on my laptop and inserted into the unit, same thing.
What am I missing? What could my next troubleshooting steps be to get the unit back in action?