hi i m from india i use jail breaked samsung galaxy s vibrant model no sgh t959 it is from united states i do have some issues with the phone becoz it is running on 2.1 eclair o.s unable to run apps on it. i want to upgrade it to 2.3 gb or 4.0 ics is it ok to upgrade a jailbreaked phone as few of my frnzz say it will again locks down dont upgrade it... my phone doesnt connects to p.c it says unrecognizable device and i had installed samsung kies even dat software doesnt recognize my phone... final problem is my network is tata docomo india having probs with internet on the phone other friends use the same tata docomo internet they get good internet service wats with me is dat the phone prob or network prob