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03623 – Invalid Security – how to remove?

After firmware or maps update when you start scanning your vehicle with VCDS you might see error codes:

  • 03623 – Invalid Security
  • 03276 – Please check software version management

And after US -> EU conversion you might see this error:

  • 03677 – Missing Security/Release Code on 5F Information Electr

And as you probably noticed you can’t remove it via VCDS – that’s permanent error. To remove first error you will need to apply this SCRIPT (click here).

The booth errors 03623 & 03677 can be removed by using our scripts.

For second error (03276 Please check software version management) you can find tutorial here!

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Adam

A lifelong Audi maniac and the driving force behind MMI Updates. Adam combines his passion for the Four Rings with technical expertise in automotive software. From troubleshooting MMI firmware to performing complex CarPlay installations, he is dedicated to bridging the gap between classic Audi engineering and modern digital connectivity. Follow his guides for the latest in Audi tech and navigation updates.
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