Haven't seen the download posted, nor a how to so here you go
Here is the download to the zip file for the update to GWK74 Android 2.3.7!
Download:
http://www.forums.acsyndicate.net/showthread.php/2641-GWK74-Android-2.3.7-update-for-the-Nexus-S-4G
How to apply update:
How to update Nexus S 4G to Android 2.3.7 Gingerbread - YouTube
Here is the download to the zip file for the update to GWK74 Android 2.3.7!
Download:
http://www.forums.acsyndicate.net/showthread.php/2641-GWK74-Android-2.3.7-update-for-the-Nexus-S-4G
How to apply update:
How to update Nexus S 4G to Android 2.3.7 Gingerbread - YouTube