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Dell ThinOS 2306

Dell Wyse ThinOS software is regularly updated to support new hardware platforms, fix issues, enhance performance, and introduce new features. Each release is tested and supported on current and recently discontinued hardware platforms. A version matrix in Dell ThinOS 2306 and 2303 Release Notes provides a list of supported platforms for each ThinOS release.

Support Platforms

The current release is ThinOS 2306 (9.4.2103), released in June 2023 supporting various Dell Wyse Thin Clients, including Wyse 3040, Wyse 5070, Wyse 5470, Wyse 5470 All-in-One, OptiPlex 3000 Thin Client, Latitude 3420, OptiPlex 5400 All-in-One, Latitude 3440, Latitude 5440, and OptiPlex All-in-One 7410. The previous release was ThinOS 2303 (9.4.1141), released in March 2023, and it supports the same set of hardware platforms as ThinOS 2306.

Firmware upgrades are supported from version 9.1.3129 or later to ThinOS 2306. If you have an earlier version, you need to upgrade to 9.1.3129 first before upgrading to the latest version. Downgrading to an earlier version requires the use of the ThinOS Merlin image.

Firmware Install / Upgrade / Conversion

The Dell ThinOS 2306 and 2303 Release Notes provide instructions for upgrading firmware, converting Ubuntu with DCA to ThinOS 2306, converting Windows 10 IoT to ThinOS 2306, and converting ThinLinux to ThinOS 2306. Each conversion process has specific prerequisites and steps to follow.

For details refer to Dell ThinOS 2306 and 2303 Release Notes at https://www.dell.com/support.

TLS Cipher

A vital call noten in the release notes is the TLS cipher list which provides information on the security status of encryption ciphers used in ThinOS. Some outdated and less-secure ciphers will be removed or disabled in future releases to enhance security.

  • There are chances after the upgrade; the device displays a black screen, rebooting the device to correct the issue.
  • From ThinOS 2303, if the thin client is registered in Wyse Management Suite Group 1 and you set the Wyse Management Suite Group 2 token in the Group 1 policy, a dialog box is displayed to change the group. Click Cancel to change to Group 2 immediately. Click Restart Now, wait for the 60-second countdown to finish, and then reboot to change 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.
    • NOTE: In ThinOS 2303, Live Update is disabled, but the thin client can download the operating system firmware and BIOS firmware in the background. However, the thin client cannot complete the installation 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 2306.
  • The settings are lost if you configure settings, like brokers, locally in ThinOS 2306 and downgrade to ThinOS 2205 or earlier versions using Wyse Management Suite.
  • If you downgrade to ThinOS 2205 or earlier versions using Wyse Management Suite, reboot the system manually again to set a password locally in ThinOS. Otherwise, passwords, like the broker login password, get corrupted when rebooting for the first time after downgrading.