# Unicorn HAT no longer working after Raspbian upgrade

**URL:** <https://forums.pimoroni.com/t/unicorn-hat-no-longer-working-after-raspbian-upgrade/893>\
**Category:** Support\
**Created:** [August 23, 2015, 9:03pm UTC](https://forums.pimoroni.com/t/unicorn-hat-no-longer-working-after-raspbian-upgrade/893 "2015-08-23T21:03:59Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\
**Post date:** [August 23, 2015, 9:32pm UTC](https://forums.pimoroni.com/t/unicorn-hat-no-longer-working-after-raspbian-upgrade/893/2 "2015-08-23T21:32:04Z")

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Looks like there may be some changes in the latest update that breaks the way Unicorn HAT works, I’ll have to look into this tomorrow.

Mostly for my reference, possibly related issues:

[http://forums.pimoroni.com/t/unicorn-hat-stopped-working/816/2](http://forums.pimoroni.com/t/unicorn-hat-stopped-working/816/2)  
[http://forums.pimoroni.com/t/unicorn-hat-permissions-in-tmp/874](http://forums.pimoroni.com/t/unicorn-hat-permissions-in-tmp/874)

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