Iphone 3GS update from 4.1 to 4.3 is it possible ?

[djshah]

Hi Guys ive got my iphone 3GS which ive bought from my friend which he used for only 2 months (because he went to U.S) and he had jailbroken to 4.1 & also installed Cydia in it for direct apps install from apps store ,my question is Is it possible to update to 4.3 with cydia or I have to again unlock and jailbreak it ? :iphone4vert:

 

[bab2010]

Everything depend on the baseband of your phone. What's your baseband saying?


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[djshah]

Baseband or modem firmware : 06.15.00