Ok, bad news, my s601 is defintely dying. Graphics are completely corrupted (even in recovery menu). No matter the cpu speed I use. I¡ve onnected to TV with same result, so probably it's gpu problem. Well, i'm starting to be tired of quality in these devices, two JXD devices dead in no more than a month. Too bad luck. Probably won't spend any money in a future device except something really interesting comes out. The shame is that my device dead just when kernel sources are released.