# SparkFun Thing Plus - SAMD51 Bootloader Make File

**URL:** <https://community.sparkfun.com/t/sparkfun-thing-plus-samd51-bootloader-make-file/39965>\
**Category:** Development Boards\
**Tags:** samd\
**Created:** [July 5, 2020, 12:57am UTC](https://community.sparkfun.com/t/sparkfun-thing-plus-samd51-bootloader-make-file/39965 "2020-07-05T00:57:45Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![stevefpv206](https://avatars.discourse-cdn.com/v4/letter/s/ecd19e/32.png) [@stevefpv206](https://community.sparkfun.com/u/stevefpv206)\
**Post date:** [July 5, 2020, 12:57am UTC](https://community.sparkfun.com/t/sparkfun-thing-plus-samd51-bootloader-make-file/39965/1 "2020-07-05T00:57:45Z")

</div>

Hello,

I recently purchased a SparkFun Thing Plus - SAMD51 and after running some test programs, I am interested in learning more about the board’s bootloader because there is very little documentation pertaining to SAMD 51 bootloaders. However, when I went to Sparkfun’s SAMD Core GitHub page:

[https://github.com/sparkfun/Arduino\_Boa … ootloaders](https://github.com/sparkfun/Arduino_Boards/tree/master/sparkfun/samd/bootloaders)

I found nothing pertaining to the SAMD 51. There was no makefile, boardfile, (.ld file), etc.

**Could you please tell me where these bootloader files for the SAMD 51 board from Sparkfun are? If not, @Sparkfun, could you please post them. I am eager to learn more however from what I have found so far, there are no behind the scene files (makefile, boardfile, (.ld file), etc for the SparkFun Thing Plus - SAMD51.**

Thank you so much!

---

<div class="post-metadata">

**Author:** ![stevefpv206](https://avatars.discourse-cdn.com/v4/letter/s/ecd19e/32.png) [@stevefpv206](https://community.sparkfun.com/u/stevefpv206)\
**Post date:** [July 5, 2020, 8:24pm UTC](https://community.sparkfun.com/t/sparkfun-thing-plus-samd51-bootloader-make-file/39965/2 "2020-07-05T20:24:01Z")

</div>

@Sparkfun do you know where I can find these files? If not, could you please post them to the GitHub? Thanks!

---

<div class="post-metadata">

**Author:** ![Yohei](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/yohei/32/258_2.png) [@Yohei](https://community.sparkfun.com/u/Yohei)\
**Post date:** [July 16, 2020, 4:48pm UTC](https://community.sparkfun.com/t/sparkfun-thing-plus-samd51-bootloader-make-file/39965/3 "2020-07-16T16:48:27Z")

</div>

Hello!!

You can find lots of bootloaders regarding SAMDx1 here: [https://github.com/microsoft/uf2-samdx1 … ter/boards](https://github.com/microsoft/uf2-samdx1/tree/master/boards)

Even though there isn’t the one about the Sparkfun SAMD51 Things Plus, you can find the Sparkfun SAMD21 and also some others board that run with SAMD51, like arcade\_feather\_m4.