Arduino for STM32

After a weekend of nothing working at all I decided to start again. The black pill with '411 and stlink v2 were still plugged in. I hit compile and upload again and it just worked..... I have no idea what changed but heck I will take it. Serial over the USB port works well too.

I have a bunch of STM32 boards and I just got some new ones after not playing with them for several years.
I can't get anything to program. DFU, mass storage, stlink.... nothing works for me
STlink on the nucleos I tried connect fine and look like they programmed but never ran a blink sketch. Later ...