Whats you nbx03_0xx number under build.prop.I've used AiO tool (v3.1) and upgrade to ICS US 4.0.3 on my SG tab and wanted to use my own region ICS since it's out already, but there seems that the only one available in here are the Wifi + 3G version (Singapore).
Take a look around and saw that you can try get the OTA by changing the ro.sony.build.incremental but there's no such line inside my build.prop.
Decided to grab my region.zip (original) and change my region back to SG version but got an error; cannot stat 'backups\original_region_build.prop': No such file or directory.
So I try to change the region to HK and succeeded to download the OTA files but it is for HK region wifi version, so my guess is that I can't download SG version while my region are HK.
Any other way to grab ICS 4.0.3 for SGPT112SG/S?
I will try find update. Best to downgrade to hc 3.2.1 then change back to sg then preroot ics sg file (which ill try find).
Chur