this method DOES work i have done it myself, i was on GENERIC_SG and i am now on GENERIC_UK
when you reach the SE Customization screen this is were you do a soft reset. when the phone loads back up when it gets to the customization screen you will be prompted that there was an error and would you like to run the customization(this is were you click 'NO'). during the installation of the cabs you will need to reset twice and remember to click no when the customization screen comes up.
also although royalbloodvi's instructions say install all cabs, this is not technicaly true, i missed out the following;
these are applications/panels/themes and small registry settings that wont make a difference if you install them or not.