1) Go to https://www.symbiansigned.com and register a new account 
2) Go to My Simbian Signed >>> Developer Certificates and download DevCertRequest tool.
Direct link: https://www.symbiansigned.com/DevCertRequest_30_10_2006_v2.0.exe 
3) Install the application in your PC and download the private keyfile (sultan.key in attachment)
4) It's time to create the certification request: open the DevCertRequest application you just
installed and fill in the fields like this: 

5) Go ahead to next steps and follow examples shown below:
6) Insert your IMEI no. and add all application capabilities: 


7) Click on finish and your Certificate Request will be created.
You can find this file in the folder
C:\Program Files\Symbian OS Tools\Developer Certificate Request\xxxxxxx.csr
xxxxxxx = the name you have used in step 4 (in this tutorial : dzed.csr) 
8 ) Go back to Symbian Signed website and go to My Symbian Signed >>> Developer Certificates >>> Request
direct link: https://www.symbiansigned.com/app/barclayhtml/devcert/requestupload.jsp
and upload the Certificate Request file you just created (in this tutorial : dzed.csr). 
direct link: https://www.symbiansigned.com/app/page/devcert/certListdownload
and download your certificate (in this tutorial : dzed.cer) !

10) Create a folder and place in FExplorer.sis, the certificate you downloaded from Symbian Signed website, Private Keyfile (sultan.key) and signsis.exe and auto_signsis.bat (you can find it in the archive attached above)
11) Open auto_signsis.bat with notepad
| Code: |
| signsis FExplorer.sis FExplorer_signed.sis xxxxxx.cer sultan.key 0123456 |
(xxxxxx.cer is the certificate you created, and downloaded from Symbian Signed web site change it with yours)
example with this tutorial and the version downloaded :
| Code: |
| signsis FExplorer_english_3ed_116b_unsigned.SIS FExplorer_signed.sis dzed.cer sultan.key 0123456 |
- save auto_signsis.bat (do not use Save-As just Save)
12) double click on auto_signsis.bat This will create a new file called FExplorer_signed.sis (or whatever you want, just change the filename), install it and enjoy this great App
in this example, you'll install :
| Code: |
| FExplorer_signed.sis |
All the files needed in this tutorial
signing_files.zip