INFO:
iPhone 3GS 16GB
AT&T Lock
Version 5.0.1 (CFW using Sn0wbreeze to preserve baseband)




Files Needed:
Install iFile : Open Cydia>Manage>Sources>Edit>Add and add repo.insanelyi.com
iFunbox

CommCenterClassic For 3GS : [Only registered and activated users can see links. ]
Mirror (Hotfile): [Only registered and activated users can see links. ]

Procedure:

1. Connect your iPhone to PC
2. Open iFunbox
Go to :
>Raw File System/System/Library/Frameworks/CoreTelephony.framework/Support/
>Delete or Back-up CommCenterClassic
>And COPY the new one
>Close iFunbox
SCREEN SHOT:


3. Open iFile
Go to :
>System/Library/Frameworks/CoreTelephony.framework/Support/commcentreclassic
>Click the Blue arrow next to the file name


>Go to Access Permissions

>SET the Following:

User : Read, Write, Execute
Group : Read, Execute
World : Read, Execute

>Tap Done


4. Install Ultrasn0w from Cydia and reboot your device
Note: 5.0.1 is still tethered on new bottrom and iPhone 4

Finish Product:



Tried and Test it only on iPhone 3GS

iPhone 4 User same procedure.

CommCenterClassic for iPhone 4 :[Only registered and activated users can see links. ]
Mirror (Hotfile):[Only registered and activated users can see links. ]