I'm trying to update an application on the play store and it returns an error:
You uploaded an APK signed with a different APK files of the previous certificate. You must use the same certificate. Your APK are signed with a digital certificate that includes the fingerprint [SHA1: 8B: FF: 30: 3B: 2A: 02: 3E: DD: 73: EE: 3B: 5F: 3A: C8: C1: B3: 72: F8] While the certificate that you used to sign the APK you uploaded has the fingerprint [SHA1: B3: 91: 7C: 1B: AF: 1D: 29: 64: 30: E8: 11: 9C: E6: 30: E2: B9: 48: AB]
I formatted my pc and reinstall Android Studio. I remember the name of my keystore, the alias, and passwords, but I had to create them again.
I read that if you were losing the key you could not use another. I don't understand becouse I don't forget the names or passwords, anyway lost the possibility to update my app?
Doesn't make a difference unfortunately. If you lost the keystore you initially created while building your final application, you cannot update the application on the google play store anymore :(
It happened to me last month, so I had to create a new application with different package name (because you cannot have 2 applications with same package name under one google developer account).