The iPhone Dev-Team have finally released their long awaited iPhone 3G software unlock solution, called yellowsn0w. It still in a beta stage at the moment, at version 0.9.1. It works, but its not very stable.
The Dev-Team have previously warned us not to update to version 2.2 with iTunes so that we don’t update the baseband version (the chip responsible for handling sim cards) to version 2.28.00. But now, they are saying that the unlock only works right now on 2.28.00, so everyone that updated accidentally (like me), or didn’t know, your in luck! And for everyone else, this won’t work on older basebands, so you have to update your iPhone to the latest version be able to unlock it. If you updated it to 2.2 with PwnageTool (without updating the baseband), then you will have to restore your phone using iTunes.
Installing yellowsn0w is very easy, all you need is a jailbroken phone, and there are plenty of tutorials on the internet telling you how to do that. After you jailbreak your phone, go to cydia, and add the Dev-Team’s source*. After refreshing your sources, go to the changes section, and you will find yellowsn0w there. Install it, then go back to Cydia’s main menu, and reboot your phone with your sim card in (without any proxy sims like TurboSim, YesSim, etc.). After the phone boots up, it gets a bit tricky.
As far as I know, all sim cards in Egypt have something called a SIM Toolkit. This STK is the menu on your phone that gives you options that are carrier related, like paying your bill, or “recharge”, or other services. The current version of yellowsn0w is a bit buggy with sim cards that have the STK. To get around that, after the phone boots up, and goes to the homescreen, you have to wait 60 seconds, then take your sim card out, and put it back in. If it works on its own, then great! You’ll have to do this every time you reboot your iPhone, at least until the Dev-Team comes up with a solution for it.
There is a lot more info on the Dev-Team’s blog post, which is you can find here. Please read it carefully before proceeding with the unlock, and make sure that you do everything correctly.
This procedure should not brick your phone in any way, and is easily removable using Cydia. But I will not be held responsible for anything that goes wrong with your iPhone. But I will of course be glad to help anyone who has any problems.* You will find the Installer and Cydia sources in the link above, I am not allowed to link to it directly.
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