How to easily sign a Nokia S60 unsigned application

Sometimes you try to install a cool application on your Nokia S60 phone but you can’t do it because it is an unsigned application, or the signature has expired. This is to keep your phone and personal information safe from evil software developers that want to harm your phone or steal personal information, among others.

Although, there are some cases where you trust the developer and want to install the unsigned software anyway. In this post I will show you how to sign it very easily (in less than 5 minutes).

The first step is to download and install a very useful software called SISContents.

For this example, I will be using a very nice unsigned application that allows you to disable the camera sound when taking pictures. Once it is installed you only need to disable the warning tones in your profile (or enable and then disable them again) and your camera will be muted. You can download this cool unsigned application from here. Now you need to drag and drop the application you want to sign into SISContents. You will see all the details of the application.

The only thing that we need to do here is to change the Package UID so that it lies inside the Test Range defined by the Symbian Signed guys, which goes from 0xE0000000 to 0xEFFFFFFF. Basically, we want the UID to be an 8-digits hexadecimal number starting with E and the rest does not really matter. In this example, I just changed the original UID 0x10202BE9 to 0xE0202BE9. You can do the same, just change the first number of the UID to E). Then go to File->Save As and write a new file name to save the changes.

Now we need to sign the file you saved. The Symbian Signed guys offer a really easy to use Open Signed online service. You only need to provide the IMEI of your phone, your email and the application that you want to sign (the file you just saved). You can access their online signing service here. You can get your IMEI number easily by just typing *#06# in your phone.

You will then receive a confirmation email where you have to click on a link. Then, just wait and you will receive a second email with a download link for the signed application. Easy.