Its easy to use.
First go to -
#1498083 - Pastie
And copy all that code and put into a text file called patch.txt
Then to apply it, just use the lv2 patcher that was out. Install it if you dont have it -
http://kmeaw.com/tmp/lv2.pkg
Then ftp to the folder in dev_hdd0/game/ whatever the folder of lv2 patcher is. Im not sure exactly.
And copy the patch.txt file you saved earlier, over the one in this folder. Then just run lv2 patcher from the xmb.
These are the different regions you can set it to :
0x83 = Japan
0x84 = USA
0x85 = Europe/Middle East/Africa
0x87 = UK
0x89 = Australia
0x8E = Hong Kong
In the code posted above change the 0x85 on line 20 to whatever version you want.