Greece-based developer harkaz created an unofficial Service Pack 4 for Windows XP



From ZDNet:

n his description of the Windows XP service-pack project, harkaz said: "Many users — including me — who won't be able to upgrade their old machines to a newer OS would like to easily install all Windows updates in one convenient package. For this reason, I started working on a Service Pack 4 package."

According to harkaz, Windows XP Unofficial SP4 is a cumulative update rollup for Windows XP x86. It can be applied to a live Windows XP system that has a minimum of SP1 installed. Alternatively, it can be integrated in any Windows XP installation media.

  Windows XP Unofficial Service Pack 4