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 Turbo VPN - Secure VPN Proxy. One known signing key across every release we hold.
4.2.9.14
Current key1 release · Jul 27, 2026Every key we have ever recorded for Turbo VPN - Secure VPN Proxy. New builds are compared against this set; a build signed by none of them is what our badge calls a mismatch.
Nord Security · Communication