The following firmware upgrade scenarios are supported:
ThinOS 9.1.3129 or later versions > ThinOS 2205 (9.3.1129)
NOTE:If you are using earlier versions of ThinOS 8.6, upgrade to ThinOS 8.6_807 and apply the latest BIOS updates before upgrading to ThinOS 9.1.6108. Then, you can upgrade to ThinOS 2205 from 9.1.6108. If you are using earlier versions of ThinOS 9.x, you must first upgrade to ThinOS 9.1.3129 or later versions before upgrading to ThinOS 2205.
NOTE:On thin clients with ThinOS 9.x versions earlier than ThinOS 9.1.6108, upgrade the OS image and upgrade the BIOS after the OS image is successfully upgraded. Do not upgrade the BIOS and the OS image together. If you upgrade the BIOS and the OS image together, the BIOS upgrade is ignored, and you cannot upgrade the BIOS to the ignored version anymore. You must upgrade the BIOS to another version.
NOTE:If you want to downgrade ThinOS to a version earlier than 9.1.3129, you must use ThinOS Merlin image.
There are chances that after the upgrade the device displays a black screen. You may reboot the device to boot it up correctly.
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 both new ThinOS firmware and new application packages in Group 1, so that thin client installs the files, automatically reboots, and changes to Group 2.
If the
Live Update option is disabled, the thin client cannot download and install any firmware or package until the next reboot. However, the firmware or packages are downloaded in the following scenarios even when the
Live Update option is disabled:
When you register the thin client to Wyse Management Suite manually.
When you power on the thin client from a power off state.
When you change the Wyse Management Suite group.
When a new firmware or an application notification is displayed on your thin client, clicking
Next Reboot will:
Not display a notification if you have changed the Wyse Management Suite group and if the files are downloaded from the new group.
Not display any notification if the new firmware or application is downloaded in the same group.
Installs the firmware or package after a reboot.
If you have installed HID_Fingerprint_Reader package, ensure that you have also installed Citrix_Workspace_App package, or you cannot upgrade to ThinOS version 2205.
If you configure settings, like brokers, locally in ThinOS and downgrade to ThinOS 6108 or earlier versions using Wyse Management Suite, the settings are lost.
If you downgrade to ThinOS 6108 or earlier versions using Wyse Management Suite, reboot the system manually again to set a password locally in ThinOS. Otherwise, the password may not be clear.
Prerequisites for firmware upgrade
Before you migrate from ThinOS 9.x to ThinOS 2205, power on the system and disable the sleep mode. If the system has entered the sleep mode, you must send the Wake On LAN command through Wyse Management Suite before using any real-time commands. To use the Wake On LAN command, ensure that the Wake On LAN option is enabled in BIOS.
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