some of the v3.5.37 firmwares have saying when we upgrade it says the upgrade success but the player still doesn't work!!! i try some version of tools
3.66 3.06 and 4.09 but it still does`t work!? bro help me!! heres the board no. of my mp4 --QY-030CV2--- version 3.5.37 512mb!!!!
