source:

light_aon_fpga.bin: 
https://github.com/revyos/th1520-boot-firmware/blob/master/addons/boot/light_aon_fpga.bin

light_c906_audio.bin: 
https://github.com/revyos/th1520-boot-firmware/blob/master/addons/boot/light_c906_audio.bin

thanks revy.