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LICENSE: How to download MDK-ARM with a Flex license

Information in this knowledgebase article applies to:

  • MDK-ARM V4.60 or higher


My product is registered with a Flex License.

I like to download an update or an older version of MDK-ARM from the Keil Product Download page. But my Flex License based Serial Number (PSN/LIC) is not accepted - what can I do?


Currently the Keil Product Download page supports only the PSN/LIC license system. FLEX license numbers are not accepted at this point in time.

To download MDK-ARM product updates (or previous versions) with a Flex license use the following PSN:


  • This PSN is only valid for update downloads and cannot be used to enable a license on your PC.



Last Reviewed: Thursday, November 29, 2018

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