If your baseband is 2.30 to contain the next step if baseband is 2.28 pass to Final step
3)third step downgrade your baseband version:
*Check Your iPhone Bootloader Version instruction find
here
*Launch Cydia by pressings its icon on your SpringBoard.
*Press to select the Sections tab at the bottom of the screen
*Press to select iClariifed from the list of Sections.
![فك شفرة ايفون 3g 2.2.1 فك شفرة ايفون 3g 2.2.1](http://www.iclarified.com/images/tutorials/3583/14042/14042.png)
*Press to select DownBB from the list of Packages.
*Press the Install button at the top right of the screen.
![فك شفرة ايفون 3g 2.2.1 فك شفرة ايفون 3g 2.2.1](http://www.iclarified.com/images/tutorials/3583/14044/14044.png)
*Once installation has completed successfully press the large Return to Cydia button.
*Press the Home button to return to your SpringBoard then press to launch Terminal
*Enter su into the terminal window then enter alpine when prompted for a password.
![فك شفرة ايفون 3g 2.2.1 فك شفرة ايفون 3g 2.2.1](http://www.iclarified.com/images/tutorials/3583/14025/14025.png)
*Enter DownBB into the terminal window to launch the baseband downgrade ******.
![فك شفرة ايفون 3g 2.2.1 فك شفرة ايفون 3g 2.2.1](http://www.iclarified.com/images/tutorials/3583/14027/14027.png)
*You will be asked to confirm you would like to continue. Please make sure you are on the 2.30 baseband and have the 5.8 bootloader before entering yes into the window.
![فك شفرة ايفون 3g 2.2.1 فك شفرة ايفون 3g 2.2.1](http://www.iclarified.com/images/tutorials/3583/14048/14048.png)
DownBB will now execute the ****** which downgrades your baseband.
Once the ****** has completed it will automatically reboot your iPhone
*Please note you will now be on the 2.28 baseband.
4)FINAL STEP FOR UNLOCK NETWORK
*Press to launch Cydia Installer from your SpringBoard
*Press to select the Manage tab at the bottom of the screen.
*Press to select the large Sources button
*Press the Edit button at the top right of the screen.
*Press the Add button at the top left of the screen.
*Enter
http://apt9.yellowsn0w.com/ as the source url and press the Add Source button.
فقط بوت لودر
5.08
مجرب وشغال
100/100
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