Android only installs an update signed by the same key as the version already on your device. This timeline shows every signing key we've seen for Dr. Rishabh & Future Doctors. One known signing key across every release we hold.
1.16.1.5
Current key1 release · Jul 31, 2026Every key we have ever recorded for Dr. Rishabh & Future Doctors. New builds are compared against this set; a build signed by none of them is what our badge calls a mismatch.
MCQdb · Education