วิธี Downgrade iPhone 3GS / 3G 06.15.00 To 05.13.04

Anyway, the iPhone Dev-Team has not abandoned its efforts to help those who use the iPhone 3G/3GS Official Lock the people using the Baseband. 06.15.00 It is possible to Unlock with Ultrasn0w true, but it will have GPS by MuscleNerd latest update that came out for the Redsn0w 0.9.14b1 to Downgrade Baseband to go to the user. 06.15.00 Back to 05.13.04 Unlock with Ultrasn0w can also get a problem with the GPS course, there is no way to Downgrade Baseband for iPhone 4/4S it.

For those who are wondering if you can update your 3G or 3GS to 06.15 solely for the purposes of downgrading to 05.13.04, the answer is “yes” for 3G owners, and “maybe” for 3GS owners. The iPad baseband is not compatible with 3GS units manufactured week 34 of 2011 or later. If you have an iPhone3GS and if digits 3-5 of its Serial Number are 134 or later (xx134 ...), then you should NOT try to install the 06.15 baseband on your 3GS! It will brick your radio, preventing both the downgrade from working and normal iPhone software from using it as a phone! Be warned!

Try it now.

REQUIREMENTS.

Redsn0w download the latest version.Here
IPSW using the current version is in the Settings. > General > About ดูตรง Version ดาวน์โหลดได้Here

Step. 1: Open Redsn0w to progress to the Extras. > Select IPSW และเลือก Firmware ที่ดาวน์โหลดมา (The current version you are using it.)

Step. 2: Back to Main Jailbreak button during operation will display the settings, and select Install Cydia Downgrade from iPad baseband is to downgrade your device and install Cydia with Baseband.