If what you typed is correct, it looks like you are using the wrong JBPatch update file....double check. This is the one you want:
Kindle Paperwhite, Firmware 5.3.1 or 5.3.3: download *_fw531.zip
Albert Einstein - “The difference between stupidity and genius is that genius has its limits.”
Mark Twain - "Never argue with stupid people, they will drag you down to their level and then beat you with experience."