Pi USB mode

temp

IS there a way to reset the USB mode of the Pi?
I Set the USB mode by using

echo program_usb_boot_mode=1 | sudo tee -a /boot/config.txt

But nö Wang to reset this mode

SaxnPaule

Deleting this line and in the config.txt doesn’t work?

techsolo12

You can’t reset the USB mode, but the Pi will check at a startup first the SD card slot.
With "echo program_usb_boot_mode=1 | sudo tee -a /boot/config.txt"
and a restart you set a bit in the OPT (One Time Programmable) memory.

Sorry for my bad english.

SaxnPaule

Quote from official Raspberry Pi documentation (https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/msd.md):

Program USB Boot Mode
Before a Raspberry Pi 3 will boot from a mass storage device, it needs to be booted from an SD card with a config option to enable USB boot mode. This will set a bit in the OTP (One Time Programmable) memory in the Raspberry Pi SoC that will enable booting from a USB mass storage device. Once this bit has been set, the SD card is no longer required. Note that any change you make to the OTP is permanent and cannot be undone.