Administrator Guide

Table Of Contents
4. Click OK to save your settings.
For information about how to delete packages using Wyse Management Suite, see the latest Dell Wyse Management Suite
Administrator's Guide at www.dell.com/support.
Downgrading the ThinOS firmware
If you are downgrading ThinOS 9.1.3112 to ThinOS 8.6, ThinOS 9.0 or ThinOS 9.1 previous versions, you must use the Dell Wyse
USB Imaging Tool to install the ThinOS 8.x or 9.x Merlin image that is posted to www.dell.com/support. Before you downgrade,
ensure that you disable the secure boot option, and clear Trusted Platform Module (TPM) or Platform Trust Technology (PTT)
in BIOS. Else, ThinOS 9.0 resets to factory settings after each reboot.
24 Upgrading the ThinOS firmware