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Downgrade Para Bb 06.15.00 Disponible

AlmaMater

Saco de Huevas
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2007/01/19
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Para lo que estan con un iphone 3G/3GS desbloqueado y sin GPS por tener el BB 06.15.00, hoy dia los tipos de iphone dev sacaron la solucion para hacer el downgrade.

http://blog.iphone-dev.org/

0615 fun
The iPhone Dev Team is happy to announce a baseband downgrade option in redsn0w for those who are using the iPad’s 06.15 baseband on the iPhone3G or iPhone3GS.
Typically you’d have the 06.15 baseband if you unlock with ultrasn0w but updated your iPhone baseband past 05.13.04. With this new capability, you can now downgrade specifically from 06.15 to 05.13.04 (even if you never had 05.13.04 on that device before). This gives you the best of both worlds: ultrasn0w compatibility and a normal iPhone baseband with full GPS and the ability to use stock IPSWs again.
Here are the steps:
  1. Use the “Extras->Select IPSW” button in redsn0w to tell it which firmware version you have installed (new-bootrom 3GS users can usually skip this step but it doesn’t hurt for them to do it too).
  2. Do a controlled shutdown of your iPhone (“slide to power off”). This step is very important to avoid mount problems when the ramdisk is running!
  3. Go back to the first screen and click “Jailbreak”. Enable the “Downgrade from iPad baseband” checkbox, disable Cydia if you already have it installed, and click Next to proceed through the normal DFU ramdisk steps.
After the ramdisk gets launched and you see the Pwnapple running on your iPhone, you’ll eventually get to the “Flashing Baseband” step. THIS STEP TAKES A VERY LONG TIME to complete and there won’t be any feedback while its running. Please just let it be for the next 3-8 minutes! When the ramdisk has done its job it will reboot the phone on its own.
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!
Thanks very much to @dilbert4life for graciously loaning us his 3GS at 06.15 (we had no such devices because we always prevent BB updates!)

If you have any questions or comments, please use our comments section below!

Here are the download links. Enjoy!Update #1: If you’re still using ultrasn0w after going down to 05.13.04, many people have reported that re-installing Mobile Substrate and/or ultrasn0w fixes crashes and “No Signal”.
Saludos!

PD: Responsabilidad de cada uno al hacer este procedimiento.
 

InnZumNiaK

In SRL We Trust!!
Miembro del equipo
Registrado
2004/08/05
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Macho
MOH
Old School
hoy estuve leyendo del tema, y es muy bueno pensando en que la baseband con la que queda el dispositivo (05.13.04) es compatible con ultrasn0w, por lo que es totalmente recomendado hacer el downgrade de baseband para aquellos que tengan su iphone con bb 06.15 :sisi:
 
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