I have an Artemis blackboard and when I upload using the most recent board definitions I get an error:
Artemis SVL Bootloader
COM13 is currently open. Please close any other terminal programs that may be using COM13 and try again.
When I use old versions of the board definitions (like 1.0.2) I don’t get this error, instead I get this message:
Connecting over serial port COM13…
No announcement from Artemis bootloader
But the program doesn’t get uploaded
At some point I did manage to get the serial example uploaded but now I don’t seem to be able to upload anything.
Hi Tyler,
If you have a BlackBoard, it might be an issue related to an older version of the bootloader. Try selecting the “Ambiq Secure Bootloader” and retry uploading. That should resolve the “COM is currently open.” error.
I’m running into a similar problem and switching to the other bootloader didn’t help. I just got an Artemis Nano and I can’t upload Example1_Blink because of a very similar error:
Sketch uses 7396 bytes (0%) of program storage space. Maximum is 960000 bytes.
Artemis SVL Bootloader
COM3 is currently open. Please close any other terminal programs that may be using COM3 and try again.
I’m running Windows 10 Pro, Arduino 1.8.8, and SparkFun Apollo3 1.0.17.
Try unplugging and using a different USB port. That’s worked for some users. 
Sadly that did not work either. Same message but with COM4.
Any help on this topic would be most appreciated. I’ve tried both of the Nanos that I bought and I’ve also tried multiple USB-C cables. Nothings has worked.