Are you stuck on the screen or the passcode screen? I can give you the exact steps for your specific situation. Older Versions of Sliver - Apple Tech 752
: These tools should only be used on devices you legally own. Using them on stolen property is illegal. silver v6.2.dmg
: Double-click Silver v6.2.dmg and drag the Sliver icon into your Applications folder. Grant Permissions : Are you stuck on the screen or the passcode screen