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Author Topic: How to get into DFU mode?  (Read 939 times)
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Hi all.My UNO R3 refuses to connect to computer via usb.When I try to load a sketch ot says(avrdude: not in sync...).I've had the same issue before, but made it out just by reinstalling the ddrivers.Well from a few days this and anything other ill not work.The only solution left is to reinstall the atmega16u2 firmware.In oroder to do this I have to acces the DFU mode by the resseting the 16u2.
Like in a tale full of troubles, grounding the reset pin of the chip (the top left pin on the 6 pin header above the chip) results in.... nothing.
I am stuck.Please help me.
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    Please help me too, I have the same problem, the arduino is not responding and I am 99% sure that the 16u2 is the problem. I want to write the firmware on it. I am using windows. I have installed flip. But the arduino is not seen by the computer. If I connect the reset to gnd nothing happends, the arduino doesn't enter in dfu mode. What can I do to save the board.
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HK
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I am also facing the same problem please help someone ..  smiley-confuse
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Peter.

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Add me to the list!!!  I can't enter DFU mode on my Arduino Uno R3.  I can't communicate with the unit.  I can't update the drivers because the Uno doesn't communicate.

HELP
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Why do you need to update the drivers? I've never done that.
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HK
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I think in my case the 16Mhz Crystal having problem .my uno is not detecting in device manager at all.
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Peter.

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This problem seems to be more common than it should be.  My uno is also not detected in win7 and ububtu 12.04.

Mike
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Same Here...
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You can Follow this tutorial for making your arduino UNO r3 enter DFU mode... I followed this tut in the link::
Description:ARDUINO- Upgrading USB FIRMWARE using FLIP
Solution to non responsive Arduino UNO.
This video explains how to upgrade the USB Firmware of Arduino UNO using the ATMEL's FLIP software. 
« Last Edit: September 25, 2013, 09:34:33 am by bhavya » Logged

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