I can reflash over usb and have done many times!
Logging via usb works, everything working as expected except wifi.
I am now trying different wifi / platform etc
Also for @JermQ - Sometimes mine crash and bootloop after failing wifi and starting the fallback hotspot. That may be causing yours to not show up over USB.
Just a reminder for your dead board. The Wemos S2 Mini needs both buttons held in when plugging into USB, then RST released first to enable flashing. USB logging working for me as long as they don’t try to hotspot. Software reset doesn’t work.