# Any Stability or Issues with New Firmware 8.1.17? I will be upgrading from 7.9.12 to 8.1.17

**URL:** <https://forum.inductiveautomation.com/t/any-stability-or-issues-with-new-firmware-8-1-17-i-will-be-upgrading-from-7-9-12-to-8-1-17/60592>\
**Category:** Ignition\
**Created:** [June 9, 2022, 11:35pm UTC](https://forum.inductiveautomation.com/t/any-stability-or-issues-with-new-firmware-8-1-17-i-will-be-upgrading-from-7-9-12-to-8-1-17/60592 "2022-06-09T23:35:14Z")\
**Posts on this page:** 1\
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**Author:** ![nminchin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nminchin/32/6911_2.png) [@nminchin](https://forum.inductiveautomation.com/u/nminchin)\
**Post date:** [June 10, 2022, 12:13pm UTC](https://forum.inductiveautomation.com/t/any-stability-or-issues-with-new-firmware-8-1-17-i-will-be-upgrading-from-7-9-12-to-8-1-17/60592/3 "2022-06-10T12:13:58Z")

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Check out my post 7.9 to 8 undocumented changes for an idea of some of the things that you will need to fix

> [@Undocumented changes when migrating from v7 to v8](https://forum.inductiveautomation.com/t/undocumented-changes-when-migrating-from-v7-to-v8/38044):
>
> Just some items I’ve found during v7 to v8 upgrades that may not be documented (some of them might be) and can cause hiccups (and quite a bit of work, relatively speaking!). The official guide to upgrading from IA is [here](https://docs.inductiveautomation.com/display/DOC81/Ignition+8+Upgrade+Guide). Tags: UDT v7 property UDTParentType has been renamed in v8 to TypeId Tag quality string values have changed. E.g. EDITED FOR 8.1.10 below 8.1.10 “Not Found” ==\> “Bad\_NotFound”; “Disabled” ==\> “Bad\_Disabled”; 8.1.10 and above “Bad\_NotFound(Error description…)”, “Bad\_ErrorC…

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