@rcentros: There's no longer a notion of "steps" involved since they moved to full images for update packages (a lot of years ago?
).
The only potential left for issues is if there's a bug in their database migration code in some weird edge cases. Which should be pretty moot for an OOB Kindle, since it's mostly empty, so there's nothing much to update in the content db
.
(I'm speaking of "update-induced" issues here. Not random, generic FW bugs).