This worked perfectly for me, step by step. Thanks so much for this. At least ONE of my tablets is running ICS now!
(*grumble toshiba thrive mumble grumble*)
Nexus 5 32GB
HTC Droid DNA
LG G2, Samsung Galaxy S4, Samsung Galaxy Note II, Samsung Galaxy SIII, HTC One S, Toshiba Thrive Tablet, Samsung Galaxy Note, Samsung Galaxy SII, LG G2X, MyTouch 4G Slide, iPhone 4s, MyTouch 4G, iPhone 3GS, Some Blackberries, HTC Diamond Touch, HTC Mogul, HTC PC6700, handful of Nokias... all the way back to the original Motorola MicroTAC in 1994.