i want to know is how will i update my phone to J.B my phone is not recognized by kies 2.0. i didnt jail break my phone. and i have tried turning USB mode from MODEM to PDA by dialing *#7284# and turning debugging mode on. nothing works. i use samsung galaxy sII X(SGH-T989D)
For your first problem (Kies) you can try with another computer and/or after that it will more easy to talk with Samsung tech Support.
For your Jelly Bean,
Officially.... all android phones can be upgrad only when Google and the Carrier decide it. Even if you see the same model from another country or another carrier receive the upgrad its doesnt mean you will upgrad it too. For now I know many users of S2 with koodo (their KIES is working perfectly) and they can't have the new upgrad yet. Except some they "hack" it to force the installation but it exists others forums for this way ;)