Windows 7 build 7201 (winmain win7ids sp)

Windows 7 build 7201 (winmain_win7ids_sp) is a build of Windows 7, which was shared by lucasm on the BetaWiki Discord server on 29 December 2019. This build is notable in that it was distributed as an update for Windows 7 build 7100, using the Service Pack installer mechanism. Despite it was even compiled from a lab which focused of Service Pack development (as seen on the  tag), references to Service Pack 1 are non-existent in this build.