I thought I had a plain Cube U9GT, and thus updated my firmware to the latest v.1.12. However, the WiFi no longer works -- it simply says "Error" when I try to turn on the WiFi. So, I went back and re-flashed to what I thought was the original v1.0. Same problem. It still says "Error" when I try to turn on WiFi. Everything else seems to work. How do I tell whether I have a U9Gt or a U9GTS or a U9GTS_A? By looking at the Serial Number? Mine says U9GTSA8GB... I'll try finding the latest firmware for S_A. Does anyone know if the rooting procedure for U9GTS works for the U9GTS_A? Thanks!