I just purchased an Asus Transformer TF300 TL. It is running Andriod version 4.1.1. I've seen postings on the web that an upgrade to Andriod 4.2 was available in 3/2013 for the TF300TL Update check states that I am up to date. Asus support stated since my serial # begins with a 'C' (2012) I can't get an OTA update to 4.2 Any idea how/were I can find this update or am I better off leaving it as is ? Thanks.