And, again, it also lacks kernel code to read a file from another machine: no FTP or HTTP client or server code inside. Those things take up precious RAM, and they're not generally useful to many people. They're also rather easy to add in userspace, outside of the (Hijack) Linux kernel.

Write a little shell script do what you want it to do (configure networking, check versions, download the file, write it to /proc/empeg_kernel, reboot). Add that to the Hijack menu with a single line in config.ini.

Cheers