I have two new Connects that I cannot get to program properly. No matter what I do I get "Upload error: Error: 2 UNKNOWN: uploading error: uploading error: exit status 1".
I have installed the Mbed OS Nano Boards core, v2.3.1. I have run the post_install.bat file. Windows recognizes the Connects as Nano RP2040 Connects when first plugged in and installing the USB drivers. Orange light flashes. RGB cycles. Green power LED is solid. I can select the board and port in the Tools menu. The board information works and returns the BN, VID, and PID. I have tried using IDE v1.8, IDE 2.0, and online editor. All fail on upload with the same error (compiles, starts upload, get the USB Windows disconnect/reconnect sound, .............. fail.).
I am out of ideas. Any suggestions on what I am missing?
Edit: Double pressing the reset button causes the orange led to stay solid and the RGB goes dark. The USB disconnects and reconnects but I have noticed that the IDE loses the board and Windows devices no longer recognizes the Connect (it is listed as Unknown USB Device). Pressing reset once returns to default operation and Windows recognizes the Connect again.
Edit1.5: Windows recognized the Connect briefly after double pressing the reset button again. The orange LED flickered and then went dark. A new File Explorer window popped up and I could see the 2 files. I was able to flash the Multipleblinks example. The Serial Monitor would not work though as the boards continuously cycled between being connected and disconnected. A second attempt to double press the reset button has resulted in the previous failure to connect. ???
Edit2: Shorting REC to GND and then powering the board leaves the green power led solid and all other leds off. The board is not recognized by the IDE or Windows.
Edit3: Everything seems to work using a Raspberry Pi 4 instead of PC/Windows10. See below.