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Sound quality from headphone as well as bluetooth speaker got worst

Star I
Please tell us some basic information before asking for help:
Model Name:ZB601KL
Firmware Version:Version WW-17.2017.2006.429
Rooted or not: not
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app): sound quality in headphones also in speaker
The sound quality in headphones and speakers got worst after the latest update let me know how to fix it.


Zen Master III
Hi, kindly elaborate more on the concern, let us know if it is lower than the previous update and if there is any difference in disturbance at high volume in both versions.

Star I
@victor2020 in the previous speaker volume was very low but the headphones and sound quality was good as usual with bass and all.
But when updated with latest version, when i connected to bluetooth speaker it sound bassless and low quality sound, later tried with headphones it got the same issue i tried several headphones JBl, Boatbass, air pods, razor etc. All the headphones were sounding bassless.

Please look into the issue and let us know...