Default Need rom for avon touch 704c

Pls i need rom for this china table avon touch
Model- AT-704C
Size IPS, 7 inch Capacitive touch 1024*600
Android 4.1 Jelly Bean
Capacity 3000mAh
Standby Time Upto 12hrs
ALLWINNER cortex A8 1.5GHZ
MALI-400MP
1GB/8GB
Wi-Fi 802.11 a/b/g/n + Bluetooth
USB USB 2.0 HOST
MicroSD MicroSD (upto 32GB)
Supports 3G
Audio Format MP3, WMA, AAC, WAV
Video Format MP4,AVI,MKV,3GP,RM,RMVB
Others PDF, JPG, BMP, PNG, DOC, EXCEL, PPT
G-Sensor 360 Degree
FRONT 0.3MP, REAR 2MP