I have 2 phones, a d2g and a d2, I could not download the z4root directly to my d2g, I had to download to my computer then transfer. My d2, i was able to download directly, although neither is on my sd card. I have downloaded the wireless tether on both and it does seem to work.(superuser). I am just concerned because i was no able to download to my sdcard. I do not know how to move to my sdcard. Should I be concerned? Thanks!