I have last updated to 1.0.5(Over the air). Since then I am not able to update to any other firmware neither through local upgrade nor through pin method. It always starts and ends with a red exclamation mark on the android .  I have tried all the suggested methods using fat formatted usb.
Any suggestions?
I am so fed up that If I cannot fix this issue in a couple of days I will get rid of it and will never buy again this junk.