Specifically, I'm using Zello and want to change the notification sounds to make them work better with my bluetooth headset, but potential answers probably will be applicable in many cases.

Using Dexplorer, I was able to locate the specific *.wav file inside the internal folder structure of the app. Dexplorer however doesn't seem to offer an option to replace these files. Is there any way I can achieve this, meaning replacing the current *.wav file with a file of my choice?


1 Answer 1


Dexplorer opens installed APK file and displays info from APK. This is internal application resources, build when autor compiles APK.

To replace specific resources you must decompile APK file, repleace files and compile (build) again.

On new build you must sign APK file with your own certificate (you may generate it). Only author have original keystore to build signed APK file.

App author probably won't provide his application signing key.

  • Ah so it's different to a Windows PC where all the files are organized in folders. Actually had no idea what exactly an app is. But as it's a single encrypted file, it is by definition impossible to change any of its internal working without the key. Did I understand this correctly? Or are there any possible workarounds?
    – MaxD
    Commented Mar 11, 2020 at 21:18
  • 1
    Yes, is single zip file (APK) signed by author certificate.
    – Kenumir
    Commented Mar 12, 2020 at 7:01

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .