Kindle 3 WiFi+3G Eu unable to jailbreak

I am completely aware there have been posts about this before on this forum but I believe they are outdated

I want to jailbreak my kindle 3. I have confirmed what model it is and I am using version 3.4.2. I followed the guide for the jailbreak and screensaver hack on this forum but I received an error, unsure what this meant I tried the screensaver hack and got the same error.

I am unsure what to do at this point and I'd rather someone else who knows their way around jailbreaking kindles to give some insight into this problem.

Thanks
-Marcus