I guess it is the same with 'rescue&backdoor', it was created for 3.2.x and do not work correctly under ICS. In addition I tried to change one or two values in the build.prop and vendor.prop ... but the system update checker says all the time 'your firmware is the latest one'.
As Nezmanpro mentioned before ... the version 2.7 AIO is currently only for ICS update process adapted, not for region chnager and recue&backdoor ... so be carefull currently with deeper system changes.
I hope will will get all this important functions back in one of the next versions of Condis awesome AIO tool.
Best regards, Obi
(Sony Tablet S rooted, Samsung Galaxy S II rooted)