Why isn't my FM radio working after updating to Marshmallow?

[AC Question]

i have lenovo a7000 phone. FM radio isnt work after updating android 6. i can start the radio but receive any voice.

 

[belodion]

Trouble following an upgrade can sometimes be put right by a Cache Partition wipe, or if no go, a Backup & Reset. Should you decide on the latter, let us know if you need advice about backing up fully.