Probably you can find an answer here, there is a guy talking about SD card, and BA problem on DM900UHD, etc.

https://www.sat-universe.com/showthread.php?t=312285

Asking about your problem, and how you can remove everything to have the box back in Factory state, without BA.

Admin

P.S.: Take a look at this topic about DreamOne, perhaps it could help.

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=21121
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