The hardware is the same for european models (Booxtor), not for russian model.
The difference is in the software.
The vendor ArtaTech build is own firmware locked for the devices sold by them. The M92 model sold is cold "Black Pearl", it's not the standard model.
When some modifications are asked by the people, it's Booxtor who test and give the link on the new firmware for the standard model.
If you have a standard model, you probably can use the chinese firmware without trouble, but this firmware can differ from the firmware for the european market. It's true, because the chinese dictionary was removed from the european firmware and I'm sure that is present in the chinese version.
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