[Q] settings - sound - "music effects" missing topic

I installed Viper4A on b133 and everything was fine.
After trying to install xprivacy something went wrong. I got a bootloop.
So I decided to flash b133 from the huawei site.
Everything went fine, accept for getting back my data by titanium backup.
O.K. no problem.
Installed everything again (not xprivaxy) and tried to reinstall viper4A.
But there is no processing....
Even in settings - sound the oportunity to choose music effects is missing.

Phone is rooted. Bootloader is unlocked.
Music fx de- and reinstalled.
Native music player frozen.

I have no more ideas - and google ist not my best friend looking for solutions.

Can anyone help me?
Thanks
J.