..and the reason is?
Seriously, chips aren't as expensive as you reckon (if that's the reason), and providing you give it to someone who can solder (i.e. a professional) - I can recommend some numerous people around the UK (if that's your reason also).
I'd forget the swappy, slidy crap and just go the whole hog. It's quite possible Sony applied these defences to all new PSTwos manufactured, and therefore, would be why the swap tools won't be working for you...