No data connection after root
I pulled the SIM card and SD card from my phone and rooted my Captivate I897 using the method described in the original post -
1: Flash I897UCKF1-AutoRoot-DesignGears.tar for root with Odin by Placing it in the PDA slot
2: Boot once, (it will install root) then shut down.
3: Download mode again!
4: Reflash the original KK4 kernel by placing it in the PDA slot in ODIN (If you do not change the kernel back to KK4 after root, you could have wifi issues)
All went well with the root process. I flashed both tar files. The problem is, I have no data connection since rooting the phone. I have wifi and phone but no data. I had data prior to rooting the phone.
Phone info -
Firmware - 2.3.5
Baseband - I897UCKK4
Kernal - 184.108.40.206-I897UCKK4-CL614489
Build - Gingerbread.UCKK4
The strange thing is, if I go into the default network setup and switch to manual, I see my regional carrier along with T-Mobile and AT&T. If I pick my carrier it tells me that I am registered on the network. The same goes for T-Mobile. If I try to connect to AT&T I get - Your SIM card does not allow a connection to this network - which is what I have always gotten with AT&T. I have even recreated the APN for my carrier. I have pulled the SIM card, rebooted, powered off, installed the SIM card and rebooted. The data icon does show up briefly during boot up and then disappears.
Do I need to flash back to stock and try rooting again or is there something I can do to avoid flashing back to stock?