SolvedHow do I hex a client?

Sorry if this is posted in the wrong section, but I just need help fast.
I have a 4.2 client and I don't want to wait for a minion to get on and approve a 4.3 client, so how do I hex a client?
I have Yogda and tried flyrocket's method but it didn't work. Can someone please tell me!
Oh, and don't link me to something just tell me in a reply.

flyrockets method works. but you don't click save after you finished changing client version, you click the button on the mostright that has 2 window thingys, it'll ask if you want to save you press yes then close everything, should have made a client with -new.swf which will work

np ) press the thanks button if it helped anyone else too

I use notepad++.