Thread: How can I find size of maps?

1) theoretically, yes.
2) as far as I know, yes.

Unfortunately downunder35m seems to have dropped off the scene now but his write-up in his "universal" post is reasonalbly clear.

As long as you have a full backup of your device you can't really brick it so give it a try (after re-reading all the stuff including others comments/feedback/tips etc in those threads)

good luck.
PS if/as/when you get further queries/problems, why not post them in that particular thread anyway.