The latest firmware for Proxmark3 X can be downloaded from https://shop.mtoolstec.comarrow-up-right.
Press the Proxmark3 button then plug in, and run the command to check the available port.
Flash the firmware done.
Last updated 1 year ago
ls /dev/* |grep usb proxmark3 /dev/tty.usbmodemiceman1 --flash --unlock-bootloader --image bootrom.elf --image fullimage.elf