My GF connected her external HDD to the TV. I don't know what exactly did she do after connecting, but it somehow got reformatted or something. She had a lot of important files on it. Now there's just '_MSTBFKS' folder with one MST_BKFS.IDX file and a lot of .BUK files (and each of those files has exactly 64MB).
At the first glance, it seems the used space is more or less the same as it was before, so I guess the data is still there.
Is there any way we could recover original files?