If I refer to comment #1082, it looks like there now is support for software version 5.4.5.1, which came with my new Kindle. I really want to jailbreak the Kindle and install the Collections Manager, but reading some of the comments after #1082 I got confused as to what to do first.
Can someone tell me if that software version really is supported now and where I'd start to add the software. If it isn't supported, I'd like to downgrade my Kindle and wonder if that's possible. I have the KPW 2.