Where can I download the official ATSAM D21 bootloader and how to burn it??

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Where can I download the official ATSAM D21 bootloader and how can I burn it?

Last Edited: Wed. Aug 12, 2020 - 10:19 AM
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Google samd21 bootloader.
Answers all your questions.

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In case of Arduino boot loaders , have a look here:

 

https://github.com/arduino/Ardui...

 

 

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In August, atsam wrote:
the official ATSAM D21 bootloader

In October, henneberg wrote:
Arduino boot loaders

I guess it depends on what atsam meant by "Official" ... ?

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