It’s time for those using ancient version of Android on first Galaxy Tab P1000 to taste something new, something interesting. Thanks to Team Cyanogen, ICS ROM is now available for Galaxy Tab P1000.
RIL ( as in phone calls/messaging ) [Broken in latest build]
Mobile Data (2G/3G) [Broken in latest build]
Orientation sensor (although it's a bit slower than usual)
Data usage statistics
Gyro, light sensors
Head here to get help on installing and using this ROM.