I keep on receiving this error when trying to upload to my Pro Trinket 3V using USBtinyISP:
avrdude: error: usbtiny_send: Operation timed out (expected 128, got -60)
avrdude: verification error, first mismatch at byte 0x0280
0xff != 0x23
avrdude: verification error; content mismatch
avrdude: verification error; content mismatch
I have two Pro Trinket 3Vs and one Pro Trinket 5V. I only see this issue with one of my 3V boards.
I have tried reprogramming the bootloader using an Arduino UNO but that did not help - I still get the same error.
Is there anything else I can try and/or can I get my board replaced?
Pro Trinket 3V error: Device not configured
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