K5 Help a noob to jailbreak K5

Hello guys,

I tried to do it alone reading post after post but I'm just too noob to do a proper jailbreak :D

Here the fact: I got a Kindle Touch serial number B011 with the 5.3.7.2 firmware and I would like to jailbreak it. The kindle is was resetted to factory default but my first try always ended in a update error 3...

Could somebody point me to the right tutorial for the jailbreaking of this specific model?

Thank you in advance!

:)