How to install unsigned applications on Symbian S60 3rd Edition smartphones

by admin

in How-To

Have you been trying to install an application on your Symbian smartphone but it ended up in getting a certificate error? Don’t mind, there is an easy way to solve this problem. Here is the solution:

  1. point your device to the “Application Manager” and open it
  2. click the left soft key to open the options menu
  3. from the list choose the point “Settings”
  4. switch the option “Software Installation” to “All”
  5. switch the option “Online certif. check” to “Off”

Pretty easy, wasn’t it? Additionally I have to tell you some little things about executing these instructions.

First you have to remember that certificates for applications are there for security reasons. If “Signed only” is choosen you can just install applications that have trusted certificates, that can only be obtained by enterprises. If Software installation is set to “All” you can also install self signed applications. That means, that the software author created the certificate by himself.

Secondly you have to know, that certificates are not the most important point when it comes to security. Once you installed an application, you may have noticed that you were warned against some features of the phone that will be used by the application. They are called capabilities and can be allowed or denied during the installation. So be careful which capabilities you allow for an application, because some of them can lead to costs or damage your system. You can find a list of capabilities at Forum Nokia.

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{ 14 comments… read them below or add one }

stephan February 27, 2011 at 4:04 AM


I use E71 and i cant get this to work.
Dont know if im a fool, but ive turned off ” online certification check” and yet when i tries to install it, it brings up the message ” cannot installed untrustfull application ” and that counts for both the signed and unsigned version in here.. Anybody perhabs could give a hint?

Regards 🙂

Reijjo November 23, 2010 at 6:26 PM

Does not work for nokia C5 DARN!! ja vittusaatana samalla.

Nanji November 15, 2010 at 11:43 AM

No Luck For Nokia C5

Birgitt June 10, 2010 at 1:03 AM

how about signing apps without additional software? like via opd…

MEHEDI May 17, 2010 at 11:06 AM

Bad luck. The tips does not work on my Nokia 5230. I can’t install vHome though i set all the option of Application Manager according to the above mention way!

Hasan January 16, 2010 at 7:23 PM

No Luck for Nokia E90 🙁

vpprof July 6, 2009 at 1:03 PM

Exactly, midtoad, it’s definitely not working on S60 5th — Nokia N97, for instance.

Suraj July 7, 2009 at 10:49 AM

We haven’t tried it on an S60 5th edition mobile.

midtoad May 14, 2009 at 3:36 AM

this procedure has no effect on S60 v5 phones. If the certificate is not signed, or is self-signed, it won’t be intalled.

senat January 5, 2009 at 8:04 PM

he wort to me in 3250 you real help me thanks a lot

Markus December 3, 2008 at 11:23 AM

It is definitely working on my E65.

daddy July 25, 2008 at 8:24 AM

I’ve seen this how-to on many sites, but – have anyone actually tried it on the less than year old devices before posting?
It’s definitely not working on my E51.

kishore July 24, 2008 at 5:23 PM

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dabp July 3, 2008 at 2:05 PM

**** guide – yes you can do the steps that you have written, but it changes nothing… Only signed versions of sisx are allowed through new nokia platform….