This is need to working bluetooth with GUI

If there is no Ethernet connection, RPi4 loading stops for 2 minutes.

The feature фкь-кзш4 is available for armh now.

rpi4-boot-nouboot-filetrigger updates
files of kernel, initrd, dtb, cmdline.txt, config.txt
on FAT when updating kernel

rpi4-boot-uboot-filetrigger updates
files of u-boot and firmware
on FAT when updating u-boot

Switch of boot mode for Raspberry Pi 4
In Alt, it is customary to load the kernel, dtb and initrd
using u-boot and configuration in extlinux.conf.
Firmware Raspberry Pi 4 loads and modifies dtb
according to config.txt configuration.
U-boot doesn't.
The scripts in this package allow you to switch boot modes:
Firmware loads the kernel, dtb, and initrd. U-boot is not used.
Firmware loads dtb. U-boot loads the kernel and initrd.
U-boot loads the kernel, dtb, and initrd.

Raspberry Pi 3/4 simply TUI switch between HDMI and 3,5mm
headphone jack audio output.