Hi.
I have china tablet model , hardware , firmware same like Iaiwai MiniPad AW920 and Nextway F8.

Spec : 

1.6 GHz dual-core Rockchip RK3066 processor
1GB of memory
8 GB Flash rom
802.11 b/g/n Wi-Fi
8-inch XGA display
multi-touch touchscreen 5 point

stock rom 4.1.1

Stock firmware AW920 --------> http://download.etbuying.com/AW920.zip 

and Nextwayt F8 ------> http://files.china-iphone.ru/817F8(839)-4.1-20121230.zip

I try flash CrewRKTablets_RK30_Genio by Oma_CM10.1_v1.3.4 then device can't boot-able (white-screen) after that i try flash only stock kernel into. Then It work ! can bootable but .. WIFI not work

Can someone please help me fix this problem.

thank you.