How to update SP2 in V4 version of XP

        My machine was originally installed in the V4 version, I don't want to reinstall the machine, but I want SP2, so I came up with this method and I don't dare to enjoy it.
1, update SP2 on V4, update to activate, ignore it, unload SP2 (as if eating too full?). 2. After the unloading, your machine will become a genuine XP! But this time to activate, I thought that this time with the latest 4IN1 counting device to calculate the number one can activate, but did not succeed (because I originally played SP1), enter the safe mode, and then use the Russian crack method to crack!
3, and then hit the SP1 patch, become a genuine SP1.
4, with the "Microsoft Center Crack 1.0 method" can activate SP1, then you can upgrade SP2, I still not thank you! ! !