Yes if you just download the c33 Firmware which is posters a few posts above you can just flash/adb sideload it from recovery.
So you are on Evolution 13 and have that mentioned FW?
So Evox13 is already OOS12 based?
I thought most of the A13 ROMs are still OOS11 based.
So double check that before Firmware flashing otherwise your phone will not boot.