I have owned a Sanei N83 Deluxe tablet recently.
I have upgraded to the latest FW from manufacturer's support page. It is ICS 4.0.3..
I also rooted it by MrTasselhof script.
Everything is alright, running very well..
I have one trouble which makes me crazy..
CWM Recovery is a simplified and 3e version. It has no Backup/ Restore option..
I tried to upgrade it to a proper version but none of them successfully ends despite all those recovery image are made for AllWinner A10 tablets..