Few months back, I wrote a post on how to sign and install unsigned Symbian applications. Due to two three months of inactivity and increased requests from my friends here, now I am again dealing with this topic. Like any Windows software, as a security measure, a mobile software should also be digitally signed to ensure that it’s safe to install on the target device. Digital signing should be done by software authors or by the users. In in most of the cases, a certificate is associated with genuine mobile software. Here we have few tips to sign unsigned mobile applications.
There are three different methods to sign and install unsigned Symbian software.
1. Turn of the certificate checking feature in your mobile phone.
Go to your mobile phones’ applications app manager and open settings. From the setting’s tab, select to install all applications, instead of signed applications. ( Valid only for Symbian and Nokia phones)
2. Install unsigned Symbian software using developer certificates from Symbian.com website.
Symbian.com is place for mobile software developers where they get their applications digitally signed. Here you can upload your applications and download the signed versions that can be directly installed. But for registering at Symbian.com website, users need their own email address, that is something like firstname.lastname@example.org They won’t accept Gmail, Yahoo and other normal email addresses.
3. Sign and install mobile software using existing certificate and key file: The third method is using a pre-created certificate and key file for local signing of unsigned Symbian mobile software This method needs three things. A certificate file, key file and signing software(Signsis.exe) .
( SignSIS needs Microsoft. NET framework 3.5 that is to be downloaded separately )
If have a certificate and key file , as shown above, you can sign any Symbian mobile software using SignSIS . Use Password for key file as 00000 . Now if your want Certificate and key file for your phone, just subscribe to mobiclue.com’s feed and then post your IMEI number and mobile phone information in comment box .
Please don’t publish your email and IMEI number here.
Update: Checkout this article to download .CER and .KEY file and sign Symbian application for free.