mohamed can it exit to winCE desktop, do you try?
If can, you don't need to change firmware..
We update firmware to add Russian locale in winCE. It's for correct displaying of cyrillic fonts in filenames and tags for some players and software..
But you surely don't need it
I have exactly same factory data on my MMC, it should exit to desktop by holding Setting button in main menu.
From desktop you can open Singlemenu folder and launch exe, that's all
Древовидный вид