Just took the card out and ran upload manager.

Card got updated to 2.4. (according to the DL Manager).
Although car Unit still shows 2.3.


From the first investigation new file appeared on the card.

downloadmanager.xml

Code:
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I XXed out my Car details, I hope you understand.
This file only appeared after the update.

Around 500MB got downloaded, I will diff old vs. new and post result.