Originally Posted by Mark Rejhon
Verichat and WebMessenger also works for non-BES, provided you are using BlackBerryOS4 with the TCP/IP features properly configured both on your device and the carrier.
On AT&T, Rogers and Nextel, this is easy, and it's doable but trickier on Cingular and T-Mobile. Not yet possible without BES/MDS on CDMA on Verizon, Sprint and Bell Mobility, and Telus.
My OS version is 3.7.121. If i want to flash to version 4, how do i know which carrier's version 4 should i download?
If generally it should work, what are the extra steps i need to take to make sure it work for my carrier in Singapore (Singtel)?