Reflash bootloader - Arduino Uno Wifi Rev.2

Official Hardware Classic UNO WiFi Rev2
1

Hi,

I never tried to reflash bootloader on a shield, but since I've got a problem I can't solve with my Arduino Uno Wifi Rev.2 (avrdude: usbhid_open (): No device found) I would like to do it.

Has anybody already tried to reflash bootloader on Arduino Uno Wifi Rev.2?
How can i do it?
Do I necessarily need another Arduino Uno Wifi Rev.2 to do the procedure or I can use others Arduino shields?
Could you please give me some tips?

Thank you!

2

it doesn't have bootloader. the 'USB chip' is a programmer.
4809 doesn't support ISP. the ICSP header is only for SPI connection of shields

3

Thank you Juraj for your clarification.

Have you any idea how to approach the following errors when I try to upload the program?

avrdude: usbhid_open (): No device found
avrdude: jtag3_open_common (): Did not find any device matching VID 0x03eb and PID list: 0x2145
An error occurred while uploading the sketch

Thank you in advance.

4

Airvale:
Thank you Juraj for your clarification.

Have you any idea how to approach the following errors when I try to upload the program?

avrdude: usbhid_open (): No device found

avrdude: jtag3_open_common (): Did not find any device matching VID 0x03eb and PID list: 0x2145
An error occurred while uploading the sketch



Thank you in advance.

https://forum.arduino.cc/index.php?topic=600558.msg4158135#msg4158135

5

Other post removed please do not cross post as it wastes time and effort of those who volunteer to help.

Bob