I have a client that is upgrading from 5.0.1.0 to 6.3.1.6. According to the 6.3.1.6 release notes you need to go to an intermediate version first, as shown here:
For ArubaOS 3.x or ArubaOS 5.0.x versions earlier than ArubaOS 5.0.3.1, download the latest version of Aruba OS 5.0.4.x.
Instead of going to 5.0.4.x we went to 5.0.3.3 and then to 6.3.1.6. This appeared to work and our "show image version" shows that 6.3.1.6 is installed:
Partition : 0:0 (/dev/hda1)
Software Version : ArubaOS 6.3.1.6 (Digitally Signed - Production Build)
Build number : 43301
Label : 43301
Built on : Fri Apr 18 15:00:26 PDT 2014
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Partition : 0:1 (/dev/hda2) **Default boot**
Software Version : ArubaOS 5.0.1.0 (Digitally Signed - Production Build)
Build number : 24398
Label : 24398
Built on : Sun Jun 13 23:49:08 PDT 2010
However, it appears that it didn't really work since APs will not connect when running on 6.3.1.6. Additionally, when accessing the GUI in 6.3.1.6 we get the following message:
Ancillary image stored on flash is not for this release
**************************************************************
WARNING: An additional image upgrade is required to complete the
installation of the AP and WebUI files. Please upgrade the boot
partition again and reload the controller
Using the "Upgrade Now" option from this message does not resolve the issue. Is this a result of going from 5.0.1.0 to 5.0.3.3 instead of 5.0.4.x? My thought was going to 5.0.3.3 put us above the 5.0.3.1 version mentioned in the Release Notes.
Any feedback would be greatly appreciated, Thanks!