Create FTL tree on PC, copy to Pi-hole device

I have two Pi 1B's that dont crash upon a gravity update (one with and one without the +):

$ cat /proc/device-tree/model; echo
Raspberry Pi Model B Rev 1
$ cat /proc/device-tree/model; echo
Raspberry Pi Model B Rev 2

I'd say focus on getting it to work on the Pi instead.
I have some tips in below link like for example expanding memory a bit to keep the OOM reaper out of the door:

And depending Pi model, you can check with below for under-voltage messages that can crash your Pi and worst case can corrupt the filesystem:

sudo journalctl --full --no-hostname --pager-end --grep voltage

FYI:

https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#power-supply-warnings