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 Notify for Mi Band 1-7 (Old). One known signing key across every release we hold.
21.7.2
Current key1 release · Jul 28, 2026Every key we have ever recorded for Notify for Mi Band 1-7 (Old). New builds are compared against this set; a build signed by none of them is what our badge calls a mismatch.