I bricked 2 Fomu boards when I run the flash.sh script in the Workshop:

    https://workshop.fomu.im/en/latest/riscv.html#using-rust

The flash.sh generated a very big file. I bricked the first one when I interrupted the download, and the second one when I waited until it finished.

Since then I can't access them anymore, nothing shown with dfu-util -l. This is what shown with dmesg:

[ 6841.095445] usb 8-4: USB disconnect, device number 2
[ 7033.545005] usb 8-4: new full-speed USB device number 3 using ohci-pci
[ 7033.698350] usb 8-4: device descriptor read/64, error -62
[ 7033.961715] usb 8-4: device descriptor read/64, error -62
[ 7034.272703] usb 8-4: new full-speed USB device number 4 using ohci-pci
[ 7034.425042] usb 8-4: device descriptor read/64, error -62
[ 7034.715060] usb 8-4: device descriptor read/64, error -62
[ 7034.825090] usb usb8-port4: attempt power cycle
[ 7035.288409] usb 8-4: new full-speed USB device number 5 using ohci-pci
[ 7035.701775] usb 8-4: device not accepting address 5, error -62
[ 7035.855118] usb 8-4: new full-speed USB device number 6 using ohci-pci
[ 7036.270159] usb 8-4: device not accepting address 6, error -62
[ 7036.270246] usb usb8-port4: unable to enumerate USB device

Is there away that I can unbrick them? I assume the flash.sh script in riscv-rust-blink has overwritten the bootloader on Fomu. Is there away to download the bootloader again somehow on these Fomu boards?