Watchguard Firebox T10 Release Note page 14

Upgrade to Fireware v11.12.1
Upgrade to Fireware v11.12.1
Before you upgrade to Fireware v11.12.1, your Firebox must be running:
- Fireware XTM v11.7.5
- Fireware XTM v11.8.4
- Fireware XTM v11.9 or higher
If you try to upgrade from Policy Manager and your Firebox is running an unsupported version,
the upgrade is prevented.
If you try to schedule an OS update of managed devices through a Management Server, the
upgrade is also prevented.
If you use the Fireware Web UI to upgrade your device, you see a warning, but it is possible to
continue so you must make sure your Firebox is running v11.7.5, v11.8.4, or v11.9.x, or
v11.10.x before you upgrade to Fireware v11.12.1 or your Firebox will be reset to a default
state.
Important Information about the upgrade process:
We recommend you use Fireware Web UI to upgrade to Fireware v11.12.1. You can also use Policy
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Manager if you prefer.
We strongly recommend that you save a local copy of your Firebox configuration and create a Firebox
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backup image before you upgrade. It is not possible to downgrade without these backup files.
If you use WatchGuard System Manager (WSM), make sure your WSM version is equal to or higher
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than the version of Fireware OS installed on your Firebox and the version of WSM installed on your
Management Server. Also, make sure to upgrade WSM before you upgrade the version of Fireware OS
on your Firebox.
If you want to upgrade an XTM 2 Series, 3 Series, or 5 Series device, we recommend that you
reboot your Firebox before you upgrade. This clears your device memory and can prevent many
problems commonly associated with upgrades in those devices.
14 WatchGuard Technologies, Inc.