Yeah, it eludes to an external crystal / timing issue which I have mentioned on the other thread on here:
viewtopic.php?f=57&t=175709
I don’t think Adafruit want to know about it, they’ve just replaced the faulty ones of mine, sometimes they work, sometimes they don’t.
STM32F405 board fails to enter bootloader
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- ilium007
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Please be positive and constructive with your questions and comments.