Can I factory unlock my iPhone 3GS running iOS 6.1.3 with unlock fusion?

Can I factory unlock my iPhone 3GS running iOS 6.1.3 with unlock fusion?

I have visited the site i didn't find factory unlocking service for Iphone 3gs there. You can unlock Apple I-Phone 3GS from network lock. You can get remote unlock service from http://www.simpleunlocking.com/apple-iphone-3gs/rs16wp9/ and get free unlocking instructions from http://www.mobileunlockguide.com/apple-iphone-3gs and unlock it from network lock. It's factory unlocking service and permanent unlocking service too.

If you jailbreak an iphone to unlock it, you can't update software or you'll lose your unlock.

just skip all that nonsense and unlock it via IMEI (permanently): http://gsmunlocklabs.com/unlock-iphone/