This is Raspberry 4 Model B, trying to install current/arm64 from a miniroot dd'd to a uSD card.
U-Boot boots fine, gets to boot> where I 'set tty fb0' as per INSTALL.arm64 which make the console output go to the monitor (the micro HDMI to a HDMI in a monitor). The I boot bsd.rd, which goes well until it gets to the (I)nstall (U)pgrade (A)utoinsytall (S)hell? line: now no keypress does anything. This is the same keyboard on which I typed 'set tty fb0' seconds ago. Yes, I tried with many keyboards. Am I missing something obvious? Jan