I'm using a Moto G6. With the latest update to android 9, they removed the capability of using the built-in Dolby Audio equalizer for some stupid reason.

I found this Reddit post that had a way to modify the APK to make this work. I followed all the steps. I decided to try the 20 band equalizer steps and made a backup of the previous work before starting. However, when I finally got to the ADB install DaxUI2.apk, it didn't work. I got this error:

adb: failed to install DaxUI2.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.dolby.dax2appUI signatures do not match previously installed version; ignoring!]

This was saddening, but no biggie, right? Because I already had a backup. I renamed the DaxUI2 folder to DaxUI2broken, renamed my backup to DaxUI2, and I tried again, with just the first part (minus the appendix). Once I did this, though, I got the exact same error.

I'd like to be able to fix this, so if anyone knows how, please tell me!

  • 1
    I made sure I had removed com.dolby.dax2appUI though. I ran pm list packages | grep dolby, and I had just com.dolby.daxservice. I can post a screenshot if needed.
    – arkainth
    Aug 20, 2019 at 0:30
  • here is the link:imgur.com/a/5G84ZUU
    – arkainth
    Aug 20, 2019 at 0:36

2 Answers 2


just uninstall the current app and then run it again.


connect device to PC. Turn USB Debugging on Execute these command

adb shell
pm list packages|grep <Package Name>

You'll get a package name for it which would look like com.xyz.example

adb shell pm uninstall <package name>

  • those days adb has unstall cmd: adb uninstall <package name>
    – yurenchen
    Sep 10, 2021 at 14:12

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