Dell ThinOS 9 Devices are Experiencing Lockups After a Firmware Upgrade to Version 2405

Summary: This article will provide information about Dell ThinOS 9 devices locking up after upgrading firmware to 2405, and how to resolve it.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

Affected Platforms:

  • Wyse 5070 Thin Client

Affected Operating Systems:

  • Dell ThinOS 9 v2405 and Earlier

Symptoms include the menus being locked down, disabled, and missing.

Wyse menu locked

Cause

The root cause appears to be related to 5070 devices that were originally WinIoT devices and converted to ThinOS 9.

Resolution

  • When a device is locked up after the firmware upgrade to 2405, perform a G key reset.
    Note: Resetting to factory defaults using G key reset:
    Users can reset the thin client to factory default settings using the G key reset feature. By default the feature is enabled.
    To reset the thin client to factory default settings:
    • Restart the thin client
    • Continuously tap the G key during the restart process until you hear a beep sound.
    To disable the G key feature:
    • Go to Advanced > Personalization > Shortcut Keys from the Wyse Management Suite policy settings or the Admin Policy Tool
    • Disable the Enable G key to Reset Device to Factory.
  • An Auto discovery to the Wyse Management Suite (WMS) like setting up a DNS SRV or DHCP option tag is recommended to the customer.

Affected Products

Wyse 5070 Thin Client, Dell ThinOS
Article Properties
Article Number: 000227640
Article Type: Solution
Last Modified: 21 May 2026
Version:  4
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