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Great news. The testing of the ICS update for HTC Sensation is complete, and we plan to start rolling out the update tomorrow, 29th March.
The update will be rolled out in phases by the Over The Air service, so if yours doesn’t appear right away, you can either wait for it to appear, or go to Settings > About Phone > Software Update > Check now.
We’d recommend ensuring your phone is fully charged before beginning the update, and carrying it out over WiFi.