Datasheet

Leave the pin set to GND (or hold the DFU button down) for >5 seconds until the BLUE status LED starts to blink
Remove the DFU jumper cable or release the DFU button
This will cause a factory reset which will wipe all config data, and should restore your board, getting you back to a normal state in most situations!
Still Having Problems?
Hop on over to our support forums (http://adafru.it/dYq) clearly explaining your problem along with the following information, and, we'll be happy to
help:
You product name and ideally the product ID
The Bluefruit firmware version you are using (available at the top of the Serial Monitor output on most example sketches)
The Operating System your are using
The Arduino IDE version you are using
Providing the above information in your first post will skip a round of two of back and forth and you'll get an answer from us quicker, saving
everyone time and effort!
Be sure to see the FAQ section of this learning guide as well, which has answer to many common problems!
© Adafruit Industries
https://learn.adafruit.com/introducing-the-adafruit-bluefruit-le-uart-
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