Step 2, download the signature software.
Step 3: Double-click to run the DOSPY signature tool.
Step 4: Right-click the certificate and select Import Certificate (Replace).
Step 5: Sign the software. Just right-click the software to be installed on your phone and select "Sign this file". Only (. Sister and. Sisx) files can be signed, and nothing else can be done.
Step 6: After signing, a "signed" folder will be automatically generated, and the signed files in the folder can be copied to the mobile phone for installation.
If you want to query whether the certificate contains your own serial number, you can right-click the certificate after installing the signature software, select "IMEI" and enter your own serial number to query. Serial number must be 15 digits, without/or-