Download Android Jelly Bean 4.2.2 stock firmware for Ainol Novo 9 Spark II tablet from here, here or from here.
Archive: Spark II 20140325
Firmware image file: jellybean_aries_qxga_le97_a4_140314.fw
Model: Ainol Novo 9 Spark II tablet
Image file size: 340 MB
Platform: Actions Semiconductor ATM7039