---------------------------1. First, download and install the mobile phone signature software FreeSigner 1.1.--------------------2. Put your cer certificate file and key key in your mobile phone. Option > -< Settings > , in < Signing certificate > And <: Signature key >; Import your certificate (.cer) and key (.key) without entering a password-then <; Return to > , press <; Add task > , that is, add unsigned software, select <; Operation > -< Signature > 5. In addition, the software can save the path, so you don't have to bother importing certificates and keys next time, which is more convenient.
6. The name of the signed file will be suffixed with sisx, so try to see if it can be installed:)
7. If there is a visa error, the software may have signed someone else's certificate, so you need to sign it and sign your own certificate again!