Error Message

I keep getting the following error message when I try to upload a sketch:

Binary sketch size: 3,574 bytes (of a 258,048 byte maximum)
avrdude: verification error, first mismatch at byte 0x0000
0x02 != 0x14
avrdude: verification error; content mismatch

Any help is much appreciated!!!

It means that the Flash is not being written to correctly. The very first byte was supposed to have 0x14 in it and in fact when the bootloader read back what was it found it was 0x02?

Does it always do it?
Have you selected the correct processor from the tools menu?

If the answer to both is yes then the chip might be damaged.

You might get more help if you post the code that gave you that error. Also, try making the subject line more descriptive.

Sorry, I’ll try to make the subject more descriptive next time.

Below is my code. It was working, but then all of the sudden it stopped and I kept receiving the above error message. I get the error message no matter what sketch I upload.

#include <Servo.h>
int pos = 0;
Servo myservo;

void loop (){}

void setup()




I get the error message no matter what sketch I upload.

In which case as I said your chip is broken. Try replacing it.