This directory contains kernel update for the multiboot image.

Version is 5.14.9 from https://megous.com/git/linux/log/?h=orange-pi-5.14

To install the update you just need to extract the boot-part.img.zst to the
first partition of the mulit-boot image (directly to a block device). So
for example if you want to update a multi-boot image on a SD card inserted
to the phone (SD card device is /dev/mmcblk0, and the first partition thus is 
/dev/mmcblk0p1), you can run:

  zstdcat boot-part.img.zst | sudo dd of=/dev/mmcblk0p1

My key can be found here https://xff.cz/key.txt