George Zhu’s BLOG

With the newly decrypted ramdisks, it’s now possible to use bbupdater to reflash the baseband (with bootloader 3.9) directly to any version (regardless it’s downgrading or upgrading) without first going to 03.14.08_G then upgrading with iTunes.

Thanks Zibri, Geohot, Dev Team and all the hard working people who made this possible!

UPDATE: All baseband files have been moved to This Page.

How to Use These Files

Example #1

Upgrade modem from 04.01.13_G to 04.02.13_G without upgrading firmware, get the following files:

iEraser
BBUpdater
Secpack040113
ICE04.02.13_G.fls
ICE04.02.13_G.eep

Then take the usual steps to reflash the modem.

Example #2

Downgrade modem from 04.03.13_G (BL3.9) to 04.01.13_G, get these files:

iEraser
BBUpdater
Secpack040313
ICE04.01.13_G.fls
ICE04.01.13_G.eep

Then take the usual steps to reflash the modem.