Error encountered when trying to upload sketch via ethernet

[fauxin]

Hello all,

I am following along in this guide:
http://www.freetronics.com/pages/how-to ... .U3-5qfldV__

And have completed steps 1-4 successfully. I am using an Arduino Duo as an ISP programmer to program an Arduino Ethernet.

I have run into an error on point 3 under heading, "Convert sketch for bootloader":

"Now, type the following using the file path to the compiled sketch you found in the last part of the "Compile a sketch" section above:"

the file, "avr-objcopy.exe" for me is located in "C:Program Files (x86)\Arduino\hardware\tools\avr\bin" and my compiled arduino sketch is located in, "C:\Users\User\AppData\Local\Temp\build5255491776347625105.tmp\PID_Development.cpp.elf".

However, when I run the following command I get an error.
"C:Program Files (x86)\Arduino\hardware\tools\avr\bin\avr-objcopy.exe" -j .text -j .data -O binary C:\Users\User\AppData\Local\Temp\build5255491776347625105.tmp\PID_Development.cpp.elf PID_Development.bin

The error I get is, "File Format Not recognized".

Does anyone know why this happens? Are there any work arounds or things that I need to install/fix?

Thanks in advance.

[mcmenon]

I'm experiencing exactly the same problem - did you ever figure this out? I've tried a few things

- downloading an up to date version of gcc tools from atmel (instead of what came with my old arduino version)

- adding / removing commands such at -j, -I

- indicating the .elf file was elf32, elf-little, elf-big

FWIW I'm running this from the command prompt, windows 10

[mcmenon]

Solved this problem

Apparently my .elf file was corrupted. I restarted everything and re-ran the verification from the IDE and created a new ELF file - this worked.