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  1. Backup the license update file CMLicenseNew.WibuCmRaU
  2. If you used CODESYS >= 3.5SP13 you'll find the license backup file in: “c:\Program Data\CODESYS\Licenses\license ticket number” (on the PC where you have licensed the PI)
  3. Restore the license via the server

Backing up the license update file CMLicenseNew.WibuCmRau via the CODESYS file manager


See the screenshot - you could get the serial number of you Pi by the  “Pi Update Tool”:

Restore the license via the server

Restoring the license on a reinstalled device