# Odroid XU4 Kernel update 4.9.51+ to 4.9.57+ emby broke
**URL:** https://dietpi.com/forum/t/odroid-xu4-kernel-update-4-9-51-to-4-9-57-emby-broke/1583
**Category:** Troubleshooting
**Created:** [23 October 2017 08:37 UTC](https://dietpi.com/forum/t/odroid-xu4-kernel-update-4-9-51-to-4-9-57-emby-broke/1583 "2017-10-23T08:37:24Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@bgx](https://dietpi.com/forum/u/bgx)
#### Post date: [23 October 2017 08:37 UTC](https://dietpi.com/forum/t/odroid-xu4-kernel-update-4-9-51-to-4-9-57-emby-broke/1583/1 "2017-10-23T08:37:24Z")
Yesterday after updating the kernel on my odroid xu4 from 4.9.51+ to 4.9.57+ my emby-server doesn’t start anymore.
Error I will post later.
How can I revert back to kernel 4.9.51+ ?
Unfortunately I’ve autoremove the 4.9.51+
A manual try to install with apt-get install linux-image-4.9-armhf-odroid-xu3=4.9.51-1 failed with not found. ❓
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### Author:  [@bgx](https://dietpi.com/forum/u/bgx)
#### Post date: [23 October 2017 11:46 UTC](https://dietpi.com/forum/t/odroid-xu4-kernel-update-4-9-51-to-4-9-57-emby-broke/1583/2 "2017-10-23T11:46:55Z")
Please close, I’ve reverted sucsessfully to 51 but problem remains. Think must be a problem with my emby installation.
EDIT: Found the problem. Userdatabase of emby was broken. After restore, everything is working.
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### Author:  [@johnvick](https://dietpi.com/forum/u/johnvick)
#### Post date: [23 October 2017 18:19 UTC](https://dietpi.com/forum/t/odroid-xu4-kernel-update-4-9-51-to-4-9-57-emby-broke/1583/3 "2017-10-23T18:19:57Z")
How did you update the kernel and any advantages to doing this?