Thank you - it all went swimmingly and now i'm looking at an unlocked k550i!

Just one thing - in step I.7 in your guide it just says "follow instructions by SETool", and when setool instructed me to remove the cable and battery, i sat here for a few minutes wondering whether it conflicted with your advice: "DO NOT remove the CABLE"

Eventually i did as setool asked, and it went fine from there. There's nothing wrong with your guide, i just feel that it could be a tad more explicit in that instance - just so people like me are less worried!

Anyway thank you for your excellent guide and tool.