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Dell ThinOS 9.x 2502, 2505, and 2508 Administrator’s Guide

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Before you upgrade

  • ThinOS 8.6: Upgrade to ThinOS 9.1.6108 first, then upgrade to the latest versions.
    NOTE:From ThinOS 2205, there is no image to upgrade to the latest ThinOS version from ThinOS version 8.x directly due to image file size limitation.
  • ThinOS 9.x (Earlier than 9.1.3129): Upgrade to ThinOS 9.1.3129, then upgrade to ThinOS 2411, and finally upgrade to the latest versions.
  • ThinOS 9.1.3129 or 9.1.4097: Upgrade to ThinOS 2411 first, then upgrade to the latest versions.
  • ThinOS 9.1.4234 or later: Upgrade to the latest version directly.
  • To downgrade ThinOS 9.x 2502 or later versions to a version earlier than 9.1.4234, use the ThinOS Merlin image.

  • Your system must be powered on, and the sleep mode must be disabled on the system. If the system has entered the sleep mode, you must send the WOL command using 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 the BIOS.

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