Good Short Notes

Now we have a solution for it. Here is the instruction and the downloads related it.

You need to install;

All these files are located at this single rar file;

(pass=huseyin)

Install Hello Carbide. Don’t open it yet.
Extract Caps On - Caps Off from zip
preFP1 CapsOn - Caps Off for SymbianOS 9.1 (Pre-FP1 Phones)
FP1 CapsOn - Caps Off for SymbianOS 9.2 (FP1 as well as FP2 Phones)

extract the contents of the archive to your phone but DO NOT OPEN!

Open x-plore, leave it open in the background.

Open Hello Carbide, select Options -> Menu1. You should get a message saying “done… Probably”. Select ‘Yes’.

Open xplore from the background. Navigate to where you extracted the Caps On - Caps Off files and copy the file CProfDriver_SISX.ldd to C:\sys\bin

Restart your phone and install Caps On and Caps Off.

Now you’ll have access to system directories, whenever you select the application “Caps Off”. To turn off system file access, open the application “Caps On”.

To install files without signing or using SignSis, use these files:

installserver.exe for Symbian OS 9.1 (Pre-FP1 Phones)
installserver.exe for Symbian OS 9.2 (FP1 as well as FP2 Phones)
installserver.exe for Nokia 3250, 5500, E50, E61 (Pre-FP1 Phones)

Make sure you have system directories. If not, open the “Caps Off” application.

Copy proper installserver.exe to C:\sys\bin

You’re done! Now you can install unsigned apps and apps with expired certificates without any signing nonsense. No more SymbianSigned, no more SignSis!

Special thanks to "Harry" and "Master F Puppet" ;)