hushed plaza
Hi Guys, I have swithed today from RPI 3 to RPI4 (at least wanted to). I have used the Bootloader to change from SD Card to USB Boot. It was confirmed by flashing of the green led. Then used a USB Micro Drive i flashed with HASSIOS with the Raspberry Imager Tool. Once trying to boot from the USB Drive it is failing with 3 green flashes. From the internet I understood this means a missing start.elf file. I booted from SD Card now with a Lite Raspbian and mounted the USB Drive. I see a start.elf file there. So, what is the problem? Unfortunately I have no Screen or Micro HDMI Cable at hand at the moment. What can I do?