* Includes new net install feature, enabled by default for Pi 4 and Pi 400
* New net install download screen may appear on boot if a boot location can't
be found or if boot is slow. Alternative press and hold shift on boot to
start net install.
* New HTTP boot order.
* Bootloader diagnosis screen is now 720p if supported by your monitor.
* Self update mode is now enabled during SD/EMMC boot.
* The PARTITION number can now be specified as an EEPROM property.
* Allow smaller MSD discovery timeouts to be specified.
* Some tweaks and fixes to IPV6 netboot.
* Increase the max ramdisk size to 128MB
* Increase timeout of early SD/EMMC commands to 100ms
