A new jailbreak tweak called InstaSafecan quickly boot a jailbroken iPhone handset into Safe Mode.
The free, simple tweak adds a button to the Home screen (labeled “Safe Mode”). Touching this button boots the handset in question immediately into Safe Mode. To add the button to your iPhone, all you need to do is install InstaSafe. Equally, to remove the button from the Home screen, simply uninstall the jailbreak tweak from within the Cydia app.
If InstaSafe doesn’t agree with you, consider downloading the free SBSettings. Instead of adding a button to the Home screen, with SBSettings, users can instead put their iPhone into Safe Mode via an Activator action.
You can download InstaSafe in the Cydia Store (via the ModMyi repository) for free. Take a look at the below video for more information on the jailbreak tweak.
If you can’t see the above video, please click this link.