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 Rumble Wallet: Buy Crypto, BTC. One known signing key across every release we hold.
2.5.0
Current key1 release · Jul 28, 2026Every key we have ever recorded for Rumble Wallet: Buy Crypto, BTC. New builds are compared against this set; a build signed by none of them is what our badge calls a mismatch.