We apparently don't have the same definition of "details"

.
So:
* Your exact Kindle model.
* Your initial FW version.
* Your last Hotfix install date (& revision of the hotfix package, if possible).
* Your previous KUAL version and type (Kindlet? Booklet? Coplate?).
* Did you fail to read the FAQ entry that mentions the fact that official updates wipe mostly everything custom, *including* KUAL on current FWs?
(The fact that you're on a PW4 -- if your profile is accurate -- only actually leaves you a single choice in the KUAL case).