Latest optimized firmware for Window N90 Dual-core
Window (Yuandao) N90 Dual-core was one of the very first RK3066 devices released back in May and it came with unstable firmware. A new optimized firmware (4.04-20120608) has just been posted and fixes multiple bugs and its said to offer better experience.
Some of the fixes: (1) to enhance the speed of touch screen, sensitivity and feedback. (2) enhanced speaker volume and sound quality. (3) Fixed crash BUG.