Khadas offers Krescue, it is a utility that runs from a bootable SD card, it offers several functions. It is easy to use and does not modify the installed OS to run.
I asked about adding KBI to Krescue. While some KBI functions are already available in Krescue, Boot Trigger Events is not yet one of them. Krescue’s author, @hyphop, says full KBI function is planned for Krescue. Other functions are planned for it too. When the new features are added, I think you will find it beneficial in setting up your VIM3.
I also dropped a hint about that too.