I just erased my firmware, using dfu-programmer-0.7.2:

$ dfu-programmer at32uc3b1256 erase
Checking memory from 0x2000 to 0x3FFFF... Not blank at 0x2001.
Erasing flash... Success
Checking memory from 0x2000 to 0x3FFFF... Empty.

The LED on the chip is now glowing red, instead of green.


I'm ready to flash it with some new firmware, using:

$ dfu-programmer at32uc3b1256 flash --suppress-bootloader-mem *.hex

However, there are several different *.hex files available online.


  • Is dfu-programmer-0.7.2 current / correct?
  • What are the differences between the various different *.hex files?
  • Which (if applicable) should I be using?

Atmel Chip Erased

closed as off-topic by schroeder Dec 20 '15 at 21:31

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This question does not appear to be about Information security within the scope defined in the help center." – schroeder
If this question can be reworded to fit the rules in the help center, please edit the question.

  • This is a question for the vendor. – schroeder Dec 20 '15 at 21:30
  • @schroeder i would appreciate if you could just let it ride. – tjt263 Dec 20 '15 at 22:43
  • Let it ride? Let what ride? – schroeder Dec 21 '15 at 1:12
  • @schroeder ..The question, the post.. – tjt263 Dec 21 '15 at 1:52
  • 1
    It's really off-topic here, and you'd get better answers from the vendor, anyway. – schroeder Dec 21 '15 at 2:20