Hi,
I know this thread is a bit old, but finally I flashed the HikVision firmware on my TV-IP320PI V1.0R FW:5.3.4 :)
The re-branded model is not DS-2CD2012-I, it's DS-2CD2010F-I(W):
http://www.hikvision.com/europe/Products_accessries_157_i8596.html
I downloaded the firmware version V5.3.0...