If you are getting an error in the Arduino IDE similar to this with the Pocket AVR Programmer:
avrdude: verification error, first mismatch at byte 0x0000
0x0c != 0x00
avrdude: verification error; content mismatch
Try looking at this tutorial => http://www.xuan-wu.com/2012-11-19-Arudino-Uno-Bootloader.
I never fully understood this particular Arduino error output. I think it has something to do with either the fuse bits or lock bits when the programmer is trying to verify the bits in Arduino’s board definitions. It could also be the write speed to the microcontroller’s flash memory or something with the RESET pin being triggered when your computer is trying to open the COM port to the Arduino development board as explained in the tutorial.
I made a short tutorial on how to burn the Bootloader by using the AVR MKII ISP, so if anyone is going that route, take a look: http://www.youtube.com/watch?v=EsLOMdu50YU&feature=youtu.be
If you've found a bug or have other constructive feedback for our tutorial authors, please send us your feedback!
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