Error while burning bootloader (while using v3.0)

MCUdude / MightyCore

Arduino hardware package for ATmega1284, ATmega644, ATmega324, ATmega324PB, ATmega164, ATmega32, ATmega16 and ATmega8535

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Error while burning bootloader (while using v3.0) #286

Closed jpalepu closed 6 months ago

jpalepu commented 6 months ago

I am using the usbTiny ESP programmer with MightyCore v3.0 and I get the following error when I try to burn the bootloader.

avrdude warning: cannot open USB device: Permission denied avrdude error: cannot find USBtiny device (0x1781/0xc9f) avrdude error: unable to open programmer usbtiny on port usb Error while burning bootloader.

What is more strange is that, everything works perfectly fine while using the MightyCore v2.1.3.

Any help is appreciated.

MCUdude commented 6 months ago

I'll assume you're using Windows. MightyCore v2.1.3 uses Avrdude 6.3, while MightyCore v3.0.0 uses Avrdude 7.2. You might have to switch USB drivers on Windows to get it to work with Avrdude 7+.

Download Zadig, select the USBtiny in the device list, and try switching to WinUSB or libusbK. https://zadig.akeo.ie