Wio Terminal doesn't start and could not upload new software

My Wio Terminal isn’t starting. There was a working software installed and after restarting the WIO Terminal only the backlight is working. Nothing is shown on the TFT. And I am not able to upload new software via the Arduino Studio. The Wio Terminal is found on COM3. But after Compiling the Upload stucks and this nmessage is shown:

Sketch uses 75536 bytes (14%) of program storage space. Maximum is 507904 bytes.
	at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:152)
	at cc.arduino.UploaderUtils.upload(UploaderUtils.java:77)
	at processing.app.SketchController.upload(SketchController.java:732)
	at processing.app.SketchController.exportApplet(SketchController.java:703)
	at processing.app.Editor$UploadHandler.run(Editor.java:2047)
	at java.lang.Thread.run(Thread.java:748)
Caused by: processing.app.SerialException: Error touching serial port 'COM3'.
	at processing.app.Serial.touchForCDCReset(Serial.java:107)
	at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:136)
	... 5 more
Caused by: jssc.SerialPortException: Port name - COM3; Method name - openPort(); Exception type - Port busy.
	at jssc.SerialPort.openPort(SerialPort.java:164)
	at processing.app.Serial.touchForCDCReset(Serial.java:101)
	... 6 more

Well… I’ve only had a WIO 3-4 days but I had a similar issue where I could not upload to it.

Here’s what I would do in order:

  1. do check that COM3 is the right COM port

  2. unplug the WIO Terminal from USB and plug it back in and try uploading (you probably did this already).

  3. Have the WIO Terminal enter bootloader mode using the instructions here: https://wiki.seeedstudio.com/Wio-Terminal-Getting-Started/#faq . Make sure the blue light is blinking after you do this (to the right of the USB connection). NOTE: The COM port WILL change to a different port in bootloader mode so change your Arduino setting. Now upload the Blink program(yes just the Blink program). If it works it will go back to the old COM port and it will work as normal.

  4. If #3 doesn’t work, reboot your computer as well. I’ve had COM ports get all nasty if my PC has been on for weeks.

  5. If that doesn’t work let me know… I’ve seen someone else post this problem and the boot loader didn’t fix it. I’ll have to look for the post but support had him do some extra stuff to get it back and working.

Hi Dennis,

The 3. hint was the solution. With a little practice I was able to start the boot loader mode and upload a old script.

Thank you very much,

1 Like

No problem glad it is working.

I encountered the same problem but can not solve