Advice on upgrading from 5.9.4.1 to 7.7.1.9

[bernard_gammon]

Hello,

Just after any guidance for upgrading from a relatively old version of the firmware to a more recent release.  Currently we are on 5.9.4.1 and wish to upgrade to a version closer to the current release for security reasons, looking at 7.7.1.9.

Is there a suggested upgrade path for such a big upgrade?  Or is it safe to go from the v5.x.x.x train to v7.x.x.x.

This is for an estate of AP7522 ap's and a VX9000.  From docs I believe both can run on the latest firmware.

Any help appreciated.

Have raised a case with support but they are just advising to look at the release notes, which I cannot see any mention of upgrade paths.

[Daren_Ellis · Accepted solution]

Morning Bernard,

You can upgrade direct from 5.x to 7.7.1.9 code for APs. 
The only concern may the the VX900, see article below.
https://extreme-networks.my.site.com/ExtrArticleDetail?an=000060688