Now days most of the softwares and New games don’t run on XP Service pack 2 so, here is the simple and easy way to change windows XP service pack 2 to service pack 3 without any installation, downloading or formating.
Here are the simple steps.
Step 1:
Run Regedit by Clicking on Start -> Run , type in regedit and press enter.
Step 2:
Browse to “HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\ Control\ Windows”
Step 3:
Modify the value of “CSDVersion” from “0x00000200”or “200” (SP2) to the Windows
XP SP3 value of “0x00000300”or”300”.
Step 5: Close registry editor.
Step 6: Reboot.
now no warning will appear regrading upgrading of window and you can install all
software's and games.
if you want to Download all the updates click the following link::