Then check that the OTP has been programmed with:- vcgencmd otp_dump | grep 17:Ĭheck that the output 17:3020000a is shown. Reboot the Raspberry Pi with:- sudo reboot This adds program_usb_boot_mode=1 to the end of /boot/config.txt. Then enable USB boot mode with this code:- echo program_usb_boot_mode=1 | sudo tee -a /boot/config.txt First, prepare the /boot directory with up to date boot files:- sudo apt update & sudo apt upgrade & sudo reboot You can use any SD card running Raspbian or Raspbian Lite to program the OTP bit. Note that any change you make to the OTP is permanent and cannot be undone. Once this bit has been set, the SD card is no longer required. To enable the USB boot bit, the Raspberry Pi 3 needs to be booted from an SD card with a config option to enable USB boot mode. The Raspberry Pi 3 B+ is able to boot from USB without any changes, but the Raspberry Pi 3 requires the USB boot bit to be set in the OTP (one-time programmmble).
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