Read all about it here:
https://bkhome.org/news/202206/easyos-d ... eased.html
Latest scripts, required to update any version prior to 4.2.2, attached.
Read the "Important" section in the blog post, if you want to do an update.
There are difference-files 4.1-to-4.2.2, 4.2-to-4.2.2 and 4.2.1-to-4.2.2, but to take advantage of these smaller downloads, you must have /mnt/wkg/easy-<current-version>-amd64.img
And it must have the correct checksum.
You can lookup checksums online, in md5sum.txt files:
https://distro.ibiblio.org/easyos/amd64 ... fell/2022/
The update script will check that easy-<current-version>-amd64.img has the correct checksum, and if it doesn't, will proceed to download the full-size easy-4.2.2-amd64.img, which is 825MiB.
If you are curious to see these online difference-files, here they are: