So, you used Hakchi2.30, messed up your console, and now it just shuts down right away. In terms of searching, if you join the 'Rock the Classics' discord, this is the info they have (though I don't see the Genesis): I may have used an older version of Hackchi that seemed to reliably restore the kernel, but any version should work as long as you can point to the specific kernel you want.
That sounds right to restore a backup Kernel from 3.8.
