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Arduino Mega 2560 Problem

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Posted by JL-P   (2 posts)  [Biography] bio
Date Wed 06 Feb 2013 10:09 AM (UTC)

I have an issue with my mega 2560.
We made a product based on a mega 2560

We already sold several but now i received some new arduino mega's

after i uploaded the code some don't work at all or give strange messages.
if i upload a older version of my code. the one without a lot of program memory entrys they do work. but to add the multilanguage option i add a lot of progmem items.

i checked my bootloaders with the ones who does work and i noticed the lockbyte is different.
the ones who work has a CF and the ones which do not work have a FF.
Can that be the problem and how can i change the ff back to CF

Kind regards

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Posted by Nick Gammon   Australia  (21,607 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Wed 06 Feb 2013 10:49 AM (UTC)
Please post your question on the Arduino forum:


- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by JL-P   (2 posts)  [Biography] bio
Date Reply #2 on Wed 06 Feb 2013 10:56 AM (UTC)
already did.
but thx already
i placed it under installation and troubleshooting
and then arduin 2560 problem
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