Reboot recovery might not work on some of these newer batches. I never got one of these newer ones to figure out why. For ADB, you need the funky TCC8902 drivers... If you could follow the ultimate guide, you might be able to use one of the recovery.img files located here Index of /experimental/20101212. Try X5A, X5A-G, or X6D depending on the version you have. Good luck.