[How to do instruction] Boot USB. Move sd-card to USB Drive

[pitkae]

I just can't get moode to boot from usb. I have RPi 3B, which should be able to be booted from usb. Actually I did manage to get rasbian to boot from usb (followed this procedure https://www.makeuseof.com/tag/make-raspb...-boot-usb/), but with moode no luck. I tried with sd card containing bootcode.bin (https://www.raspberrypi.com/documentatio...-boot-mode), but no luck.

Any ideas what to try? What am I missing?

I guess RPi 4 would be easier to get booted from usb. I'd get one, but the availability is null