Deployment Guide

Prerequisites before you migrate from ThinOS 8.6 or
upgrade to ThinOS 9.x
● If you are using ThinOS 8.6, you must upgrade to ThinOS 8.6_805 and apply the latest BIOS updates before upgrading to
ThinOS 9.1.3112.
● If you are using earlier versions of ThinOS 9.0, you must upgrade to ThinOS 9.0.4024 before upgrading to ThinOS 9.1.3112.
● All device settings are erased after you upgrade from ThinOS 8.6 to 9.1.3112 except the following settings:
○ Wyse Management Suite group token and server settings
○ Static DNS
○ Certificates
○ IEEE802.1x wired authentication settings
○ Wireless connections
￭ The WEP/Sharekey security type is changed to Open as they are not supported in ThinOS 9.1.
○ Proxy settings
● You must back up your device settings before you start the upgrade process to ThinOS 9.x. Once upgraded to ThinOS 9.1,
you can downgrade to ThinOS 8.6 only by using the Merlin image.
● Before migrate from ThinOS 8.x to ThinOS 9.x or upgrade from ThinOS 9.x to later versions, ensure that your system is
powered on and the sleep mode is disabled on the system. If the system has entered the sleep mode, you must send the
WOL command through Wyse Management Suite before using any real-time commands. To use the WOL command, ensure
that the Wake-On-LAN (WOL) option is enabled in BIOS.
● If you are an English-language user, do not modify any language settings in Wyse Management Suite. The default language is
English after you upgrade from ThinOS 8.6.
● If you are a multi-language user, ThinOS 9.1 supports nine languages—English, German, French, Italian, Spanish, Japanese,
Chinese Traditional, Chinese Simplified, and Korean. Users of all regions must use the English language firmware image.
There is no separate firmware image for Japanese language. The firmware image includes the font and language packages
for all the nine languages. You do not need a separate font and language package. You must set the region language in Wyse
Management Suite before upgrade from ThinOS 8.6. After the device upgrade process is complete and checked in to the
Wyse Management Suite server, the user interface language is changed to the language that you have configured in Wyse
Management Suite. You can change the language from either Wyse Management Suite or ThinOS interface.
● Ensure that you upgrade the BIOS version, on Wyse 5070 Thin Clients, to 1.3.1 before upgrading to ThinOS 9.1. If you
upgrade to ThinOS 9.1 with an earlier BIOS version and then upgrade the BIOS version to 1.3.1 or later, the thin client may fail
to boot up.
● You cannot boot into ThinOS 9.1 when you perform the following operations:
○ Disable the on-board Network Interface Card (NIC), Trusted Platform Module (TPM), or Platform Trust Technology
(PTT).
○ Clear TPM or PTT.
○ Reset BIOS to factory default settings.
● If you are using ThinOS 9.0.1136, you will not be able to upgrade the operating system firmware or install application
packages post September 2021. You can update the operating system firmware or install the application packages by
disabling the time server on ThinOS and changing the system time to August 2021. Dell Technologies recommends you to
update to ThinOS 9.1.1131 or later version where this issue is resolved.
● When you upgrade from ThinOS 9.0 to 9.1, the thin client downloads all the application packages that are applicable to
ThinOS 9.1. After you upgrade to 9.1, all the application packages are removed and you must reinstall the application
packages. Dell Technologies recommends you to upgrade from ThinOS 9.0 to 9.1 without installing the application packages.
If you add multiple application packages along with the operating system image in the same Wyse Management Suite group,
the upgrade may fail due to the low disk space. In this scenario, you must reset to factory default settings for upgrading the
ThinOS client again.
● If the thin client is registered in Wyse Management Suite group 1 and you set Wyse Management Suite group 2 token in
group 1 policy, then the group 2 token is applied on GUI but the thin client will still be in group 1. You must reboot the thin
client to change the thin client to Wyse Management Suite group 2.
NOTE:
Dell Technologies recommends that you set a new 9.1 application package or an 9.1 OS firmware package in
group 1, so that thin client installs the package and automatically reboots and changes to group 2.
● If the thin client is registered in Wyse Management Suite group 1 and you set Wyse Management Suite group 2 token in
group 1 policy, then the thin client requires a reboot to change to Wyse Management Suite group 2.
● ThinOS 9.1 does not apply operating system firmware application package and BIOS firmware in the child select group.
● When you set a new firmware or an application package in Wyse Management Suite group 2 and then change the device
from group 1 to group 2 before upgrading, the following two notifications are displayed:
Introduction
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