Deployment Guide

Downgrade to ThinOS 8.6 or 9.0—If you want to downgrade to ThinOS 8.6 or 9.0, disable the secure boot option in the BIOS
setup. Downgrading ThinOS 9.1 to ThinOS 8.6 or 9.0 through Wyse Management Suite is not supported. You can downgrade to
ThinOS 8.6 or 9.0 by using the USB Imaging Tool and Merlin Images posted on the www.dell.com/support site.
NOTE: If you want to downgrade to ThinOS 9.0, you must clear TPM or PTT in the BIOS and then use the USB imaging
tool and Merlin images to downgrade.
NOTE: You cannot downgrade to ThinOS 8.6 if you are running the systems with SSD devices.
NOTE: You must install the application packages after you downgrade from ThinOS 9.1 to ThinOS 8.6 through merlin image.
Supported systems
The following systems are supported on ThinOS 9.1:
● Wyse 3040 Thin Client
● Wyse 5070 Thin Client
● Wyse 5470 Thin Client
● Wyse 5470 All-in-One Thin Client
Supported Wyse Management Suite versions
The following are the supported Wyse Management Suite versions:
● Wyse Management Suite 3.1 Standard or later versions
● Wyse Management Suite 3.1 Pro (on-premises) or later versions
● Wyse Management Suite 3.1 Pro (cloud) or later versions
Wyse Management Suite default communications are handled over port 443 and MQTT communications over port 1883. WMS
and MQTT server values must be defined in the ThinOS user interface or provided by DHCP or DNS services.
NOTE:
For information about the Wyse Management Suite Standard download and Pro trial, go to www.dell.com/
wyse/wms/trial. For information about Wyse Management Suite manuals, go to the Wyse Management Suite product
page at www.dell.com/support.
Introduction 5