Here is a working TWRP for Allwinner A33 tablets running Android 4.4

You will need to use a mouse for navigation.

In TWRP you may need to use mnt/usb as one tablet I tested it on could access sd + ext sd + mnt usb and the other could only access mnt/usb. If this is the case you will need a multi usb adapter to accommodate the mouse+usb flash drive.

I recommend setting the screen  in TWRP to no sleeping.

I have tested this today and all is working (tested backup and restore) 

The recovery.img just needs flashing with Rashr.apk (de.........recoverytools )

Best regards

Bob