For ATT users only:
What this is:
This is a full clean SBF of 2.3.4 or 1.8.3 WITH the BL unlock and rooting built in to /preinstall.
Flashable SBF: Full 2.3.4 with preinstall root and pudding bootloader unlock, full sbf
Flashable SBF: Full 1.8.3 with Bootloader unlock and preinstall root. It's over 9000 (600mb DL service sbf)
1. Flash with RSDLite 5.3.1 or sbf_flash
adb shell /preinstall/restoresu
Apparently I am a terrible scripter, so follow eval-s instructions from here:
type in adb ("adb shell") or terminal emulator, exactly:
/bin/mount -o remount,rw /system
cp /preinstall/su /system/bin/
chmod 6755 /system/bin/su
PATH=/system/bin:$PATH pm install /preinstall/Superuser.apk
The last step is optional (and next-to-last *should* be unnecessary), as you can install Superuser however you like. In fact, if you've installed it, simply typing "/preinstall/su" is another way to root, and you could then mount /system read-write and copy it into /system/bin.
Lastly, you can make your own preinstall pretty easily, include any kind of mod you want P_ROM etc. For instance when I reinstall I always want to install wget and crond, turn off tomoyo permissions and disable the usb plugin sound. You can put apps in /preinstall/app then make a md5sum file in /preinstall/md5 and apks will get loaded on reboot every time you flash. This is more of a fyi for those of you out there cooking up sbfs. you've got a huge partition to play with so I'm sure people out there can come up with creative ways of using it.