Thank your for your quick response. There is no urgency about this - v38 works with no problems. I was curious as to the cause of the hang, and to make sure that there will be a path if I do need to upgrade from v38. So September or later is no problem. I have sent a photo to your email - the 12V-5V...

I had a problem after upgrading a NMEA4Wifi to v49. The NMEA4Wifi is from March 2020 and has the wide black-PCB Wemos ESP module. It had worked well with v38 as received. The OTA upgrade to v49 appeared successful, but afterwards it would only boot successfully approx 1 in 3 times: appeared to go th...