Many thanks to the author and forum contributors! The jailbreak worked great on my Paperwhite, recently updated to 5.4.4.2 - clear and easy to execute; ditto on freeing myself from DRM (on my own purchased books only
. Bummer about Collections Manager, but grats on the PhD and good luck with the job search! Will try the Calibre "Kindle Collections" plug-in for now...with hope for an updated CM in future.