Kudos on restoring your PW2.
I have no experience with PW2. The approach looks good, but whether this would work in whole or part on another Kindle model is depends on many variables. For instance the PW4 file system is androidized and isn't a dual boot system where you could use rescue this way, file signatures are enforced more rigorously,
et cetera.
But you might take that as a challenge rather than an obstacle.
