Need previous keystore file

Question

I now finished upgrading android app... and trying to upload this upgraded version to google appstore. But the problem is we don't have keystore file which was used for previous version.

And google app store doesn't permit me to upload apk cause SHA1 is different.

And apparently my customers don't have previously used keystore file.

What should I do?

Answer 1

If you've lost your Keystore file then there is no way that you can update the app in Play Store.