Adafruit Feather M0 - Can't Manually Start Bootloader

Hi all,

I just crashed an upload and now my board is no longer recognised by my computer in device manager upon plugging back in.

I have tried the double click the reset button method as mentioned on the adafruit website, however, I cannot get it to enter the bootloader mode where the flashing red LED is visible.

Have I bricked my device or is there a special double clicking method to get this to work?

Notes: this was previously working, so it's not a problem with my USB cable.

Many thanks,
Jim

Please check this: Restoring Bootloader | Proper Debugging of ATSAMD21 Processors | Adafruit Learning System