RPi4 Status and sysutils/rpi-firmware [BETA4 with *.dtb start4.elf fixup4.dat updates works in my context, no u-boot update]

[Mark Millard]

https://github.com/raspberrypi/firmware now shows a
1.20210303 tag that should get the updated materials.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)