I have more or less the same problem. LCD 1.5", Chipset AT J2091N, 4 GB with radio and motherboard
FMX2588@163.COM. I have tried a lot of firmware but screen always black (MP4 dead). The only one that give me some symptom of life is 9.0.48 full 1.5 LCD but I have permanently the clepsydra on. I hope that very soon we can have a new firmware that can solve our problems.