Phone fully booted, enable usb debugging adb push Superuser-3.0.7-efghi-signed.zip /sdcard/external_sd/ adb reboot bootloader fastboot boot cwm-188.8.131.52-presto.img In Clockworkmod, select install zip from sdcard. Then select Superuser-3.0.7-efghi-signed.zip and install it. Note: You may have to install it several times before the symlink at the end of the install works. Reboot the phone.
How to Install ClockworkMod Recovery with today’s ICS update: (root required)