# Upgrading 7.9.3 to 8.x - Any intermediate 7.9 revisions to hit first? **URL:** \ **Category:** Ignition\ **Created:** [November 17, 2019, 4:51pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034 "2019-11-17T16:51:00Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![AIO](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aio/32/87549_2.png) [@AIO](https://forum.inductiveautomation.com/u/AIO)\ **Post date:** [November 17, 2019, 4:51pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/1 "2019-11-17T16:51:00Z")
I’ve got a client wanting to go 7.9.3 to 8, and I am curious if there are any recommended 7.9 minor revisions before making the upgrade? Is it best practice to take it up to 7.9.12 first, or is there little value in doing so? Just trying to avoid any pitfalls along the way and ensure this is a smooth move. Thanks ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 17, 2019, 6:02pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/2 "2019-11-17T18:02:16Z")
There are some minor gotchas in 7.9.12 related to AB drivers. Consider 7.9.11, or waiting for 7.9.13. The biggest changes will be related to client security privileges. I’d test those in a late 7.9.x before switching to 8.0. ---
**Author:** ![AIO](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aio/32/87549_2.png) [@AIO](https://forum.inductiveautomation.com/u/AIO)\ **Post date:** [November 17, 2019, 6:07pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/3 "2019-11-17T18:07:44Z")
Thanks, Phil. I’ll take it up to 7.9.11 and go from there. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [November 17, 2019, 6:19pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/4 "2019-11-17T18:19:40Z")
What are the AB driver gotchas in 7.9.12? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 17, 2019, 6:40pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/5 "2019-11-17T18:40:07Z")
Wasn’t that where the scan classes aren’t honored (well, exposed)? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [November 17, 2019, 6:54pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/6 "2019-11-17T18:54:24Z")
Oh, that. Yeah that’s a thing, I just didn’t think of it as AB specific. The thing that causes the polling rate to not match the scan class has always existed, but a change in how UA subscriptions are made has made this all visible, most notably with tag change scripts that now fire more often than expected when a changing value is polled faster than expected. 7.9.13 does change the request scheduling so the rate is always honored. ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [November 17, 2019, 7:02pm UTC](https://forum.inductiveautomation.com/t/upgrading-7-9-3-to-8-x-any-intermediate-7-9-revisions-to-hit-first/30034/7 "2019-11-17T19:02:45Z")
> [@Kevin.Herron](#): > > I just didn’t think of it as AB specific. Ok, I missed that nuance. I thought it was a driver problem, not a UA server issue.