I attach it for everyone interested.
The ..._NG1.zip file has the library that works, just copy in /system/lib and set the permissions to 644 (rw-r--r--) with your favourite root file manager. If you want you can backup the existing one first.
Alternatively, for convenience, I also attach a .zip to flash with custom recovery. (the ..._NG1_CWM.zip file). Flashing it will overwrite the file, so if you want a backup do it beforehand