Hello everyone,
I just buy a kindle pw2, and I didn't know 5.6.x can't be jailbroken unless you open it. It is my fault and I've learned a lesson.
This kindle was bought by a seller from Japan, May 2014.
And I bought it from the seller online.
The 5.6.x version was first released in Dec. 2014, right?
If I don't misunderstand, my kindle is not installed with 5.6.x., and it was auto-updated to 5.6.1.0.6 just after I turned it on.
So, please let me know:
Is it possible to jailbreak a kindle pw2 which was never jailbroken, not installed with 5.6.x but, unfortunately, autoupdated to 5.6.x?
Sorry for my poor English, and thanks in advance!
ps. I just want to install koreader because I need to read lots of PDF files.
I dare not open it!

With my hands messing on it, it will absolutely become a trash!