I upgraded to 3.22.5 (with a new token) and 2.48.3 today and successfully coded an F020_12-11-504 car where it previously failed before with 3.18.4 and 48.3. So I can confirm that the new releases (software and data) can code earlier versions (of course it should have, but you never know...)
I have not seen a car coded with F020_12-11-505 yet, so I have not been able to verify that that works yet, but based on the success reported here, it sounds like there aren't any problems.
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