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UNO32 Fails Verification

Created Thu, 01 Sep 2011 15:02:33 +0000 by chariotdriver


Thu, 01 Sep 2011 15:02:33 +0000

I have a brand new UNO32 just purchased at the Microchip Masters conference. I get the following error when downloading any Sketch:

Binary sketch size: 13036 bytes (of a 126976 byte maximum) avrdude: verification error, first mismatch at byte 0x0180 0x00 != 0xff avrdude: verification error; content mismatch

Shield on or off makes no difference.Is this board bad? Do I need to reload the Boot-loader?

I also have the MAX32 and it's working fine with the same programs.

Thanks Dan


Thu, 01 Sep 2011 15:28:26 +0000

This sounds like the flash memory timing problem. See this thread for a pretty thorough discussion of the issue.


So far as I know, programming the new boot loader (now on the Digilent web site) has fixed this on Uno32 boards exhibiting the problem. Do you have a Microchip dev tool (such as a PICkit3 that you can use to program the new boot loader.

Gene Apperson Digilent


Thu, 01 Sep 2011 16:32:50 +0000


I have a Real Ice programmer. Looks like I need a special adapter for the board?

Thanks Dan


Thu, 01 Sep 2011 18:17:40 +0000


I understand that Scott has been helping you resolve this. If you need anything else, let me know.



Fri, 09 Sep 2011 19:50:43 +0000

hello, have the exact same problem! Unfortunatly I'm not a pic programmer and I don't have a pict3 programmer, there any other way to upgrade the bootloader without spend more money? :roll: