Just wanted to report how I solved the problem that my Win7 64itb PC suddenly did no longer recognize my MIDIbox SEQ (stm32) propperly: When connecting my SEQ via USB for SW upload my PC displayed in the device manager that the device is not working propperly (error code 10) And as a result I could no longer select my box in MIOS Studio. All de and reinstallisation and change of the USB ports had no succes. What did the Job for me was the following: 1. I downloaded this driver