This is the backup structure of a Residentflash NDrive Touch Lith.
Confirm Your Structure Is Equal:
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A little trick to access WinCE Explorer(Tested in NDrive Touch Ligth):
Create a new notebook file named "YFGo2CE.bld" with any content as long as it has at least one character.
Copy this file to the root of the memory card (SDMMC) and restart Binatone U605 through the Reset hole.