Dear All, My iphone was made in 2009 week 36 (3Gs 16Gb). I was using ios 4.x.x but now i upgraded it to ios 6.1.3 thru Snowbreeze 18.104.22.168. Following all the stipulated instructions i was able to do the upgrade but I can not use my phone as its telling me "No Service". I have tried downgrading to ios 6.0.0 thru Redsn0w 0.9.14b1 but its not working at all. I learnt the baseband is suppose to be 05.13.04 but right now what i have on it is 06.15.00. Kindly help me with a working solution as i live and use the phone in Nigeria. Social Media and Contact information are not permitted in our forums Thanks in advance. Regards.