The Curtis Klu LT7033
is very similar to the Proscan PLT-7035 series (both are from same company and except the fact that it has 1 GHz instead of the 1.2Ghz processors of the 7035's).
All those tablets have the Rockchip RK2906
so for all things like root, play store, CWM etc. visit my thread (link below) at xda-developers.
The company website has the firmware up in zip format (also contains the explanation and walk through for firmware upgrade)
: Follow all the remaining steps in my posts in thread at your own risk. It worked fine for me - so neither the forums or me are liable in any sort of way for any damages whatsoever that you may bring upon yourself.
All the best.