Install Unsigned Applications on Symbian Mobile
This has been tested successfully on Nokia N95 8GB and Nokia 6120 Classic.
1. Download required files from here
2. Copy “installserver.exe” to Phone Memory (C:\Data\)
3. Install “HelloCarbide.sisx”
4. install “x-plore”
5. Open X-plore (leave x-plore running, press menu to go to main menu)
6. Open “HelloCarbide”
7. Go to Options > Menu1 and click Yes
8. swith to x-plore (press and hold menu key and choose x-plore)
9. Go to Menu > Tools > Configuration and tick “Show system files/folders”
10. Locate “installserver.exe” from Phone Memory (C:\Data\) and click Menu > Edit > Move and go to C:\sys\bin folder and click ok to move the file.
11. Restart the phone
ScreenShot

Note: Always make a backup of your phone before you do this.
