# Fails to connect S3D

**URL:** <https://forum.lulzbot.com/t/fails-to-connect-s3d/5785>\
**Category:** Software\
**Created:** [April 6, 2018, 7:41pm UTC](https://forum.lulzbot.com/t/fails-to-connect-s3d/5785 "2018-04-06T19:41:12Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![HETZER](https://avatars.discourse-cdn.com/v4/letter/h/85e7bf/32.png) [@HETZER](https://forum.lulzbot.com/u/HETZER)\
**Post date:** [April 6, 2018, 7:41pm UTC](https://forum.lulzbot.com/t/fails-to-connect-s3d/5785/1 "2018-04-06T19:41:12Z")

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I updated the firmware on my mini with Cura and now, it does not connect to Simplify3d.  
Everything was fine before update and I was able to use Cura and S3D without any problem.  
Now only Cura, can anybody help?

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**Author:** ![kcchen\_00](https://avatars.discourse-cdn.com/v4/letter/k/9dc877/32.png) [@kcchen\_00](https://forum.lulzbot.com/u/kcchen_00)\
**Post date:** [April 6, 2018, 9:03pm UTC](https://forum.lulzbot.com/t/fails-to-connect-s3d/5785/2 "2018-04-06T21:03:27Z")

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Could be baudrate, new firmware versions are hardcoded to 250000.

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<div class="post-metadata">

**Author:** ![HETZER](https://avatars.discourse-cdn.com/v4/letter/h/85e7bf/32.png) [@HETZER](https://forum.lulzbot.com/u/HETZER)\
**Post date:** [April 7, 2018, 3:57pm UTC](https://forum.lulzbot.com/t/fails-to-connect-s3d/5785/3 "2018-04-07T15:57:17Z")

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Thanks alot.  
As you said, it was the baudrate.