I had developed my app in xamarin forms and release my android app with playstore. and unfortunately I have to change my system. Now I have done some changes in app and I want to release that new apk in playstore then I am getting this given below:
You uploaded an APK that is signed with a different certificate to your previous APKs. You must use the same certificate. Your existing APKs are signed with the certificate(s) with fingerprint(s): [ SHA1: 70:9A:CF:42:5E:98:B9:4D:B2:F6:B7:2E:AC:C4:64:14:4B:5D:76:18 ] and the certificate(s) used to sign the APK you uploaded have fingerprint(s): [ SHA1: 62:E0:24:5F:18:95:47:95:60:C3:08:B2:D5:16:E8:C5:46:D1:D7:4E ]
Please help me as I am new with xamarin forms development
Thank you
The apk you uploaded first time(the apk which is live on playstore), had a different signing key compared to the apk you are trying to upload right now.
Once an apk is uploaded on the store, you always have to use the same applicationId and signing key as you used for the first time uploading. If your ever loose your key, you can never update the same apk again.
Edit: Starting from May 2017, there is an option to upload your keys and back them up in google servers. But you have to opt in to this service. They will backup they keys you uploaded and give them back when you need them. But if you don't opt in for this service already, before losing your keys. you are out of luck