How to downgrade an AP 3805 image from 10.01.04.1003 to 09.21.07.0007

[Christoph_Bloos]

I have to attach 3805 APs to a V2110 Controller running version 09.21.07.0007 (need v9 as I have still to support 2600 APs).

The config manager module is trying to downgrade the APs image from 10.01.04.1003 to 09.21.07.0007 which is failing.

Here the log entry:

"Wireless AP automatic software upgrade/downgrade has failed.
May be a corrupted image was selected as a default. Please select another default image. This alarm will repeat while the system is in automatic mode: Wireless AP SN 16xxxxx; failed image 09.21.07.0007."

How can I downgrade the APs to get them attached to the controller.

Any help is much appreciated

[Michael_Rinner]

Hi all together,

I have to solve the same problem. Unfortunally I can't use the solution "controlled upgrade" because we use at about 20 AP3805 in a warehouse environment.
I tried to upgrade the AP manually via tftp and received the following message:
##########
image_upgrade
TFTP Filename in progress....
TFTP done.
core enabled
Error! Image file header not found!
No core files while upgrading
/usr/sbin/image_upgrade1: Clean up and exit with return value 12
############
I extracted the AP_FW-file from AC-MV-09.21.09.0004-1.bge as described by Gareth and Andre.
Yes I resetted the AP as described by Umut with cset f.

Is there a solution for manual upgrade/downgrade of the AP?

Regards

MIchael

[Umut_Aydin]

Hi,

did you set the AP to factory default?

Regarding new image..yes I saw it in the past that somehow the AP code was corrupted.
To test it with a different code would be good.

You can get the AP image only from the Controller itself.
It's not downloadable from the web.

You have to setup a V2110 if possible on your side
or call GTAC for the code.

The code in the Controller would be in /var/controller/images/AP/(ap Type ) and so on..

Regards

Umut

[Ronald_Dvorak]

Is the AP on a remote network or in the local subnet of the controller ?

[Christoph_Bloos]

local sub net - layer 2

[Gareth_Mitchell]

Christoph

You could also configure controlled upgrade mode in order to get the AP's connected on the code that they are running now https://gtacknowledge.extremenetworks.com/articles/Q_A/How-to-upgrade-Identifi-Wireless-AP-with-hotf...

Check that tftp is allowed on the path between the AP and the controller (firewall etc) and also check MTU is not a factor.

You can then try a manual upgrade of an AP once it is connected and up/stable.

-Gareth