"connected to USB" but not recognized by computer

Hi there

I tried the sticky threads and search function but didn't find a solution :P

I have a M6TS (which is pretty much the SL)

I formated the player and installed the firmware which worked fine (i used the TS firmware from here Meizu Me - Downloads - M6 TS 2.004.7 )

Now the problem: The player will turn on normally and works fine as far as i can tell (there are no files on it) but when i plug it into USB it isn't recognized.
The Player displays "connected to USB" but the computer doesn't give me the drive. If i plug it in turned off, it's charging normally.
I tried this on Windows Vista, XP and Ubuntu and it's always the same.
The only thing i see is an entry in the device manager on Vista under USB devices which hat some meizu signature in the details but it says that the device works correctly.

I also noticed that the player says it's running the 2.004.6 firmware.

Another thing is that the player seems to use much more battery power even though he obviously isn't playing anything (maybe even when it's turned off or when i think it's turned of)


I didn't want to use DFU tools because the player isn't frozen and i thought there might be another way...

Anyone any ideas what i could try?


Update: there are many files in the root directory with random names ( ").+" etc)
i deleted them but they reappeared