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 KFH Online. 2 known signing keys across the releases we hold.
6.4.1
Current key1 release · Jul 27, 2026Every key we have ever recorded for KFH Online. New builds are compared against this set; a build signed by none of them is what our badge calls a mismatch.