How to Sign Your Own Android ROM
You must create a ZIP file from your Android ROM before you transfer it to the Android device. Android verifies the ROM and checks if it was modified before it installs it. Whenever you modify the contents of the ZIP file, you break the signature so, to be able to install the ROM on the Android device, you must sign it again.
Other People Are Reading
Instructions
-
-
1
Download Auto-sign from the Media Fire website that helps you sign an Android ROM. Click on the "Download" button and save the file on your hard drive.
-
2
Right-click on the "Auto-sign.zip" archive and select "Extract All" from the resulting menu. Select the desktop in the file browser and click on the "Extract" button. A folder named "Auto-sign" is created on your desktop.
-
-
3
Download OpenSSL for your Windows operating system from the Open SSL website. Click on "Source" in the navigation menu. Click on the "openssl-1.0.0e.tar.gz" link and save the archive on your hard drive.
-
4
Right-click on the "openssl-1.0.0e.tar.gz" archive and select "Extract All" from the resulting menu. Select the "Auto-sign" folder and click on the "Extract" button.
-
5
Copy the Android ROM ZIP file to the "Auto-sign" folder. Go to the "Start" menu and type "cmd" in the Run box. Press "Enter" to start the Command Prompt tool.
-
6
Type "cd desktop\Auto-sign" in the Command Prompt and press "Enter" to run the command and point the Command Prompt to the "Auto-sign" folder.
-
7
Run these commands in the Command Prompt to generate some private keys and sign the Android ROM file:
openssl genrsa -out key.pem 1024
openssl req -new -key key.pem -out request.pem
openssl x509 -req -days 9999 -in request.pem -signkey key.pem -out certificate.pem
openssl pkcs8 -topk8 -outform DER -in key.pem -inform PEM -out key.pk8 -nocrypt
java -jar signapk.jar certificate.pem key.pk8 Your_Application.zip Signed_Application.zipReplace "Your_Application" with the exact name of your ZIP file. Replace "Signed_Application" with the name you want your signed ROM to have. A new ZIP file will be created containing the signed ROM you can upload to the Android device.
-
1
