Here is how:
1. Download the ROM from:
2. Download the GB Baseband from:
3. Install the ROM (1st step download) via CWM (factory reset and wipe dalvik cache before)
4. Connect the usb cable in a win xp (some reported win 7 is also ok) machine and follow the instructions in http://forum.xda-developers.com/show....php?t=1244490 but select the downloaded Baseband file (from the step 2).
5. It will show the factory download page on the screen but will give an error on %22 and say failed. But it will work when you restart your phone!
Please use the thanks button if you find the post useful. (Only thanks button don't donate please since it is mostly by the users below )
Thanks and credits go to mohicanrat for the rom and baseband, and marti701 and adixtra for flashing and cable instructions.
A video is being uploaded showing the ROM with 3G
Here is the video: http://youtu.be/A3aTeIVtZEg
Edit 2: Updated the links and thanks to skottydoguk (in fact now i'm not sure if i should credit him or not because he is being an as..h.le for claiming that he invented the method eventhough it is clear as water that i am the first one -see my youtube video above, and check the date and compre it with this doggy's- fixing this, he only fixed the data connection not the baseband. I am the one who has found out that it may help the flashing method for the baseband to fix it...) for fixing the wifi plus 3g data