So, best way to return to stock 2.3.7? Im on leaked IMM76D and can reroot later if I need to. How to relock? or do I need to relock? And I also need to preserve data in doing so. Thanks
Okay got it for ya...
1. Make a Nandroid Backup if your rooted and then pull the ClockWorkMod folder off your sdcard and place it on your computer for later.
2. If your not rooted and simply running the leaked ICS 4.0.4 then use this to backup your data/settings... [BETA] Backup Wonder Machine (no root, ICS only)
3. Use this to return to stock [GUIDE] Restore to Stock/Unroot for the Nexus S 4g
4. Then update to official ICS 4.0.4 and restore your backup either by rooting and reinstalling CWM/using your old Nandroid Backup (do a data restore only) or using the BWM described above in #2.