java -jar signapk.jar certificate.pem key.pk8 input.zip update-signed.zip
verify, then parse, then apply
But what exactly is update-signed.zip ? Why is the "signed" part critical? And how can you use one without bricking your device? This long-form guide will cover everything you need to know, from cryptographic signatures to step-by-step flashing instructions. update-signed.zip
: The "signed" part of the name indicates that the archive includes a digital signature. Before the Android recovery system installs any file, it verifies this signature against a trusted certificate stored on the device. If the signature doesn't match, the installation fails with a "failed to verify whole-file signature" error to prevent malicious code from being flashed. How to Install update-signed.zip java -jar signapk