2.9.0 was recently removed from the website. Please see info here. If you are already successfully running 2.9.0, you can continue to do so with no risk.
2.9.0.HA has been posted to resolve this issue. The Release Notes for 2.9.0.HA are the same as 2.9.0 with the addition of the hotfix.
WLAN and BSAP Version 2.9.0.HA were released and posted for the vWLAN Appliance, Virtual Appliance (VMware), BSAP 1800s, BSAP 1900s, and BSAP 2000s. Please review the vWLAN and BSAP 2.9.0 Release Notes for specific details.
Important Note: vWLAN can only be upgraded to 2.8.0 or above if it is currently on version 2.6.2. vWLANs on versions 2.2.1 to 2.6.1 must first upgrade to version 2.6.2 and then upgrade to version 2.8.0 or above. AP firmware does not have to be upgraded to 2.6.2 and can instead be upgraded directly to 2.8.0 or above with the final upgrade.
If you attempt to upgrade from a version prior to 2.6.2 to 2.8.0 or above, the upgrade will error out and the following message will appear in the upgrade alerts and platform alerts:
*** MUST BE RUNNING 2.6.2 TO UPGRADE TO THIS IMAGE! *** (Please upgrade to 2.6.2 prior to loading this image.)
Follow these links to the vWLAN and BSAP software downloads.