A Windows version is expected to launch soon, but until then, this method can only be used with Mac computers.
Furthermore, this method details how one can update the baseband .
If you ever need to find an i Phone baseband version number, these instructions show you how to do that.
This is why when certain hardware and software i Phone unlocks are updated they are specific to different baseband versions, since modifying or ‘hacking’ the baseband is necessary to allow either a software based unlock or jailbreak on the unlocked i Phone to utilize the cellular modem on the phone, thereby allowing call, data, and SMS transfer to occur on the device.
Again, buying an unlocked i Phone does not require those modifications to baseband to access other networks, which is why unlocked i Phones are generally more desirable on the resale market and for international travelers than locked i Phones, which either must be unlocked through the carrier, or through a mechanism as described a moment ago.
You don’t want your battery to die during the flash process!
Today, the i Phone Dev-Team is expected to update ultrasn0w and add support for i OS 5.
Many i Phone owners have probably heard the the term “baseband” or perhaps read or heard about baseband upgrades.
The purpose of these i Phone baseband upgrades is to improve the functionality of the cellular modem that is on the device, and the low level firmware (software) that is contained within the baseband.
There may be a long delay while it’s doing this (their servers are currently getting pounded).
If you do flash your baseband via redsn0w, please keep it plugged into USB the whole time. Let us know how it's working for you by leaving a comment below!
All i Phones have a baseband, and i Phone baseband is essentially the cellular modem firmware that is on your i Phone.
Specifically, baseband includes the low level software that is running on the i Phones cellular modem hardware, the combination of which allows the i Phone to connect to a cellular network to send and receive data, phone calls, and transmissions.
i Phone3GS users with old bootroms who want to go to 4.2.1 should not use this Pwnage Tool!