How to Sign Unsigned sis and sisx files (in easy 3 steps) on pc
First of all you have to Download GenialSis and Register an account from SymbianSigned.com
Download GenialSiS application and extract .rar content somewhere on your desktop
First Step
Open GenialSis.exe and enter your IMEI number
If you don’t know your IMEI press *#06# in stand-by mode





Select the .sis file that you want to sign and Click to Sign! Button

Thanks to p@sco and socci4 for this program!
If you have CAPTCHA problems you can sign your .sis files online on this link
https://www.symbiansigned.com/app/page/public/openSignedOnline.do