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Teensy 4.1 cannot boot 7.0 #5086

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@Red-M

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@Red-M

CircuitPython version

7.0.0 alpha 5
7.0.0 alpha 4
7.0.0 alpha 3

6.3.0 Does not have this issue

Code/REPL

No COM/serial presented to OS via USB

Behavior

I flash the mentioned 7.0.0 versions and when I plug the teensy back in, after about 3 minutes, all I get is this USB descriptor:
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bugmimxrt10xxiMX RT based boards such as Teensy 4.x

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