* 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
Net install changes.
* Net install is initiated on boot if shift is pressed.
* New HTTP boot order (7) and configuration parameters,
HTTP_HOST, HTTP_PATH, HTTP_PORT to set url
Other interesting changes.
* Increase the max ramdisk size to 128MB
* Increase timeout of early SD/EMMC commands to 100ms
Net install changes.
* Got rid of confirmation step that required you to press <Space> to
initiate net install. Now just long press <Shift>
* Updated the screen text to make it more obvious the device is still
trying boot when the net install is showing.
* Fixed a DHCP net install bug which caused us to lose the
gateway address.
* Fixed a bug with the uIP timers which could cause net install to
always fail.
* Implemented resume and retry on download failure.
Other interesting changes.
* Allow smaller MSD discovery timeouts to be specified.
* Some tweaks and fixes to IPV6 netboot.
Previously, the .sig would have an update timestamp of zero. Switching
to rpi-eeprom-digest is preferable because the update timestamp will
be much closer to when the image was installed.
N.B. Update-timestamp is used to track configuration changes and is
independent of the build-timestamps which are the version of the
bootloader executable.
Interesting changes since the last default release
* Support and bug fixes for all Compute Module variants.
* NVMe interoperability fixes
* FAT/GPT fixes and file-system performance improvements.
* Add secure-boot support for industrial applications
See https://github.com/raspberrypi/usbboot/blob/master/secure-boot-recovery/README.md
* Added ramdisk / boot.img - for RPIBOOT and secure-boot.
* Promote the recovery.bin from stable to default. This avoids an
issue where recovery.bin fails to load on large FAT32 boot partions with
32K clusters.
