Android Certificate Issues : How to upgrade from debug to release certificate

Question

i've a problem with android certificate. We have published a build to one organisation with the debug certificate using jenkins. Now im facing the following issues:

• Im unable to find which debug.keystore is used while build the project using jemins.
• And now i want to certify the build with new keystore and make sure that the application should just upgrade the previous one and should not erase the previous data.

Please help.

Answer 1

1, There is CERT.RSA file in APK's META-INF folder, unzip it, and use keytool to check the fingerprint of the certificate: keytool -printcert -file your-path\CERT.RSA

Every keystore has it's own fingerprint, so it can used to distinguish keystores.

keytool is included in JDK.

2, Upgrade a package with different certificate is definitely not allowed by Android.

Answer 2

You can not do that - upgrade is only possible if certificates match.