Don’t you just hate iTunes Popup message, when it asks you to update your iPhone. Don’t you hate yourself when you click Update without knowing what you are doing and eventually locking your device or ending up on the Emergency Call Screen. Well, dont feel bad, we have a solution for you. First, Stop updating your device and make this a habit. Second, Try the procedure after the jump to get past the Emergency Call screen or activate your iPhone 3GS or 3G to use it on any carrier.
This procedure can activate your iPhone 3GS and 3G on any firmware to date. Although you should know that there is no jailbreak for iPhone 3GS on iOS 4.1 (September 15, 2010) so if you have updated your device to iOS 4.1 you are out of luck but you can activate your device and get past the Emergency screen to use it as an iPod. iPhone 3G on the other hand can be Jailbroken and unlocked on any Firmware to date.
How To Activate:
Step 1:
You need to have a Phonebook SIM. Phonebook SIMs are available, online and in the market. This is what I used… I wonder why they used a Dog on it.

Step 2:
Use the SIM and insert it into your iPhone 3GS or 3G.
Step 3:
Wait for iPhone 3GS or 3G to show the activation screen, Plug in your device and launch iTunes. iTunes will recognize your iPhone 3GS or 3G and activate it. So far so good?
How To Jailbreak:
Step 1:
Turn WiFi ON on your activated iPhone 3GS or 3G.
Step 2:
Open safari and go to www.jailbreakme.com. All you have to do here is slide the bar shown on the screen and wait for Jailbreakme to finish the download and Jailbreaking of your device. Do not unplug or do anything silly at this point.
Step 3:
After the Jailbreak of your iPhone 3GS or 3G go to Cydia > Manage > Sources > From the Top Right corner Tap on Edit and then Tap Done. A popup will open put http://cydia.pushfix.info and tap on Add Source.

Step 4:
Next, go to Search option on your Cydia screen and type in “Hactivation (Patch)”
Final Step:
Install the patch and reboot your device. After the reboot go to Cydia again and search ultrasn0w to unlock your device and enjoy your activated and unlocked device.
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Disclaimer: Please be careful with what you do and ask questions before you proceed, we at TechSliver.com will not be responsible for any kind of loss. Please talk to us if you want to before you proceed, we are here to help you and guide you.
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