That is good to know.
Are you saying you went directly from 5.6.5 to 5.8.2.1?
Which device? (Sorry, not everyone keeps their info block up to date.)
Try installing one of our update_*.bin format packages, that is the only time the jail break is used (to check the signature).
If you want to check for a working jail break without actually installing anything -
From the second section "Packages targeting the Kindle 5 . . ." of this page:
https://www.mobileread.com/forums/sho...d.php?t=225030
(Unarchive and) install the "Dummy Test Hack"
All it will do to your Kindle is test things and write a report in /documents.
Didn't you also have to install Python and MrPI?
= = = =
Anybody else with something to report?