[Q] how to upgrade to ICS

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please help me, i dont know what to do..

i want to upgrade my WT19i LWW phone to ICS
but i dont know how to do it.

android version : 2.3.4
baseband version : 8x55A-AAABQOAZM-203028D-58
kernel version : 2.6.32.9-perf SEMCUSER@SEMCHOST #1
build number : 4.0.2.A.0.58 "i want to update it to .62 via ota but i dont know how to do it.."

is there a way to upgrade to ICS??

official,sony ics is in beta,just for arc neo and ray,wait for it ok