user34459: I am trying to burn bootloaders to Atmega2560V and when I hit burn bootloaders it shows me this error 

avrdude: Device signature = 0x1e9803
  avrdude: Expected signature for ATmega2560 is 1E 98 01

I know this device should have 0x1e9801, But I don't know why it's showing me this error.
I tried my luck by starting threads at AVRFREAKS but no joy.
One of my friend told to try changing the device signature in the avrdude from 0x1e9801 to 0x1e9803 for a temporary try.
How can I do that.? please please please anyone help.
Thanks

user7508: You should have, somewhere in your hard drive, a file named
avrdude.conf. My copy of the file has the following lines:
#------------------------------------------------------------
# ATmega2560
#------------------------------------------------------------

part
    id               = "m2560";
    desc             = "ATmega2560";
    signature        = 0x1e 0x98 0x01;
    ...

Try changing the line with signature. Alternatively, you could make a
new entry for your MCU like this:
#------------------------------------------------------------
# ATmega2560V
#------------------------------------------------------------
# Identical to  ATmega2560 but for the signature

part parent "m2560"
    id        = "m2560v";
    desc      = "ATmega2560V";
    signature = 0x1e 0x98 0x03;


34459: <p>I am trying to burn bootloaders to Atmega2560V and when I hit burn bootloaders it shows me this error </p>

<blockquote>
  <p>avrdude: Device signature = 0x1e9803
  avrdude: Expected signature for ATmega2560 is 1E 98 01</p>
</blockquote>

<p>I know this device should have 0x1e9801, But I don't know why it's showing me this error.</p>

<p>I tried my luck by starting threads at <a href="http://www.avrfreaks.net/forum/factory-reset-mega2560-and-mega2560v#comment-2241211" rel="nofollow noreferrer">AVRFREAKS</a> but no joy.</p>

<p>One of my friend told to try changing the device signature in the avrdude from 0x1e9801 to 0x1e9803 for a temporary try.</p>

<p>How can I do that.? please please please anyone help.</p>

<p>Thanks</p>
 7508: <p>You should have, somewhere in your hard drive, a file named
avrdude.conf. My copy of the file has the following lines:</p>

<pre><code>#------------------------------------------------------------
# ATmega2560
#------------------------------------------------------------

part
    id               = "m2560";
    desc             = "ATmega2560";
    signature        = 0x1e 0x98 0x01;
    ...
</code></pre>

<p>Try changing the line with <code>signature</code>. Alternatively, you could make a
new entry for your MCU like this:</p>

<pre><code>#------------------------------------------------------------
# ATmega2560V
#------------------------------------------------------------
# Identical to  ATmega2560 but for the signature

part parent "m2560"
    id        = "m2560v";
    desc      = "ATmega2560V";
    signature = 0x1e 0x98 0x03;
</code></pre>
