Originally Posted by nathan2226
Has there been any previous kernal/firmwares released?
Could be as simple (or not so simple?) as flashing a kernal via Odin and rooting using SuperOneClick, like the S II ?
Sometimes stock initial firmware for a device shows up on the leak sites, sometimes it doesn't, seems to be a crapshoot.
The "hard way" to root a device, which requires two devices for a clean dump, is:
a) It's possible to dump 90% of so of the files of an initramfs without root - do this, try to fill in the holes, and build an insecure kernel using this dump. Use that to get a clean system dump.
b) Use the clean system dump to develop a prerooted system image that can be flashed to a second device to get a clean stock kernel
a) You can get 80% or so of /system without root - dump it, fill in holes, make an Odin-flashable image that has su binary added.
b) Flash this and get a clean zImage dump
c) Use that dump to develop a custom kernel that is flashed to a second device to get a clean /system dump
We got lucky on the SGH-I777 (USA AT&T GSII)- International kernels were functional enough to get a full /system dump, and I was able to use that dump to develop a prerooted system image which I used to extract the stock kernel image from my device.