The time has come: we have a version of the xMagic that works with MCT so you’ll be able to change the HF side on the go.
Maybe a bit late to the party, but it would be great if there were Gen4 GTU or Gen4 GDM versions as well!
Preferably with full implementations, working shadow mode (GDM/GTU) and possibly even sniffer mode (GTU?/others)… 
Sniffer mode is where the IC records the keys used by the reader for you to read out via a backdoor command.
FlexUG4 is what is available, but not in an xSeries format
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