i had iphone 3gs for 4 years through great experience with it 
.But time is going faster at the same time apps requirments getting stronger so i want to ask how to update iphone 3gs without wifi from pc through third-party software.
Update:I tried a software called sn0wbreeze 2.9.14 everything was i right but when making custom ipsw i get the following error
https://imagizer.imageshack.us/v2/735x573q90/819/lco5.png
.But time is going faster at the same time apps requirments getting stronger so i want to ask how to update iphone 3gs without wifi from pc through third-party software.Update:I tried a software called sn0wbreeze 2.9.14 everything was i right but when making custom ipsw i get the following error
https://imagizer.imageshack.us/v2/735x573q90/819/lco5.png
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