Upgrading 32-bit 8.3.3 Controllers (MC models, FortiWLC-50D/200D/500D) with AP832/822 (without KRACK patch)
Upgrading from FortiWLC 8.3.3 to 8.4.8 results in runtime1 image corruption in AP832 and AP822v1. This is due to a resource leak in the 8.3.3 version which is fixed in later releases.
Follow these steps to upgrade from 8.3.3 to 8.4.8.
- Reboot the APs before upgrade.
- Run the upgrade controller command to upgrade controllers.
- Once the controller is online, upgrade the APs in batches. Before initiating upgrade, ensure all APs are rebooted so that the uptime is less than 5 hours.
Notes:
- Fortinet recommends that you upgrade the 8.3.3 32-bit controller before upgrading the access points due to the issue mentioned in this section.
- If KRACK patch is installed on the 8.3.3 32-bit controller then this recommendation does not apply. The controller can be directly upgraded to 8.4.8.
- This section does not apply when upgrading from 8.4.0 or later to 8.4.8.