doub posted an update on his Lua board we covered previously:
Today I soldered a second one, and it looks much better. Here is a picture. I just plugged it on my PC while pressing the DFU button and Windows recognized it as a “STM Device in DFU Mode”, and properly downloaded the drivers, so I guess it’s working alright. Now I have to write some software for it and check if the SDRAM works OK (this is my biggest unknown).