@Degru: Don't confuse porting a hack to a different FW/model and simply repacking a package.
While the latter is easy enough to do, you'll most likely have to tweak the code/scripts of the hack itself for it to work properly on another model/fw
.
Cf.
the top of this page for the quickest repack method, which most likely won't suffice/will potentially wreak havoc on your device in the case of the specific hack you're working with (I'm not sure the browser behaves the exact same way/is even the same codebase as what runs on FW 3.x).
Once you have tweaked the code to play nice with a K4, you can do what you were trying to, but with the proper syntax ;p
Code:
kindletool create ota2 -d kindle4 Relative_Path
Check post #2 for some example packages and the output from
kindletool help for more details about the syntax
. [Namely, since you mentioned an absolute path in your message, the -C switch, because by default kindletool behaves like tar, and if you feed it an absolute path, it *will* archive an absolute path, which you most decidedly do NOT want to do
)].