# Mini firmware rollback

**URL:** <https://forum.lulzbot.com/t/mini-firmware-rollback/4864>\
**Category:** LulzBot Mini\
**Created:** [May 6, 2017, 10:50pm UTC](https://forum.lulzbot.com/t/mini-firmware-rollback/4864 "2017-05-06T22:50:46Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![AndrewMini](https://avatars.discourse-cdn.com/v4/letter/a/ed655f/32.png) [@AndrewMini](https://forum.lulzbot.com/u/AndrewMini)\
**Post date:** [May 6, 2017, 10:50pm UTC](https://forum.lulzbot.com/t/mini-firmware-rollback/4864/1 "2017-05-06T22:50:46Z")

</div>

I recently bought a second Mini with 1.1.0.11 which would not run the cooling fan in simplfy3d. I set the firmware back to 1.0.2.2 (to match my other one) with Cura, but now the extruder is running very at a very low rate (step = 833), something like 10mm requested only goes 1 or 2mm. Is there something you can suggest that would help me workout whats going on?