a new day, a restart of the system, and now the flash worked. I have no idea what fixed it but it worked.
[07/17/20 00:30:40] Begin ‘Flash Device’
[07/17/20 00:30:40] Upload Meadow.OS.bin (~2 mins)
[07/17/20 00:32:37] Initialize device
[07/17/20 00:32:43] Erase flash (~3 mins)
[07/17/20 00:35:05] Restart device
[07/17/20 00:35:08] Upload Meadow.OS.Runtime.bin (~1 min)
[07/17/20 00:35:36] Process Meadow.OS.Runtime.bin (~30 secs)
[07/17/20 00:36:02] Restart device
[07/17/20 00:36:05] ‘Flash Device’ completed
