Unlock a jailbroken iPhone 3GS to use it with T-mobile. DISCLAIMER: This only works with an iPhone 3GS, not any other iPhone, and only on firmware 3. 0 or lower. 1. Turn off 3G under "settings" and then "general". 2. Go to Cydia. 3. click "manage" and then "sources". 4. Press "edit" and then click "add". 5. Type in: http: //repo666. ultrasn0w.com. 6. Add source. 7. Wait for it to update the sources. 8. Click "repo666" and then "Ultrasn0w". 9. Click "install" and wait for it to install . 10. Hit the home button. 11. Remove the SIM card and replace it with your T-mobile SIM card. You should get T-Mobile service and now have a fully unlocked iPhone 3gs !
Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check our list of supported iPhone and iPad models, then follow our step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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