When things go right, you only ever have to jailbreak once, but you do have to take steps to preserve the jailbreak. You do not need to reset. If you have applied the latest hotfix, just update to the firmware you want (but stay away from 5.12.x), then reinstall the various goodies.
Study the first post in the thread:
https://www.mobileread.com/forums/sh...d.php?t=320564