I've got a A500 tablet, and it's now updated to HC 3.21.
reading on this forum that made me hesitate to update mine to ICS.
May I ask which model of the Iconia tablet that you have??
Please take a look at the bottom of the box, and it should say Acer Iconia Tab A500-10S32x.
I think the last alpha at indicated a specific HW build.
perhaps that's why lots of other people have problems with their ICS upgrade; since they might all have slightly different HW / chips in their A500 tabs.
please advise. many thanks.
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Thanks very much.