Question [Q] iconia internal memory recovery

i need to recover some deleted files from my A500. i tried several undelete/recovery tools, but no luck. in the end i decided to extract the internal memory form my iconia a500 using the (only) i could find (so far), the idea being that i could then then mount this image and use windows file recovery tools to get the lost files back. here are the instructions i tried to follow:
http://forum.xda-developers.com/gala...y-yes-t1994705

for this method to work, the device needs to be in adb mode. i have not found a way to do this for the A500: only recovery and apx.

does anyone know if it's possible to put the iconia in adb mode? if not, is there any other way to extract the internal memory and save it as an image/raw file, like in the example mentioned?

thanks a lot.