Just dug out my old fx61 which has a Pixhawk Lite FC installed (fmuv2 I believe). This had the older 3.8.5 NuttX firmware installed and connected to MP no probs (running in windows 10 VM under VMWare Fusion on my Mac). Then I did the upgrade to current beta release ChibiOS version (3.9.8 I think). On connecting to windows 10 It seems to connect (chimes), disconnect then re-connect after plugging in the USB cable. Then I get a driver error and no com port shown in Device Manager. I managed to get it connected to my mac and installed the latest release NuttX version of arduplane using QGC, and this is recognised correctly in Win10, connecting in MP just fine (com port recognised as “PX4 FMU…”). So I installed ChibiOS version once again in MP, and again the same issue with the driver so can’t connect - again no com port appears after the driver error. Connecting fine under QGC on the mac - so once again back to NuttX version.
Anyone shed any light on this please?