Updated to firmware 3.0.0 and can’t update or rollback. Not sure what I’m doing wrong if anyone can help.
I did this months ago, so my memory isn’t perfect. I seem to remember there was a step where you had to use your phone as a WiFi Hotspot. This wasn’t working for me so I used my laptop as the hotspot and everything worked fine. Good luck.
Make sure that your phone hotspot is set to 2.4GHz frequency.
There are downgrade instructions in these notes. Handy Firmware 3.0.0 Beta 1 – Handy Setup