If you can't update or restore your iPhone or iPod touch - Apple Support
question] why wen I download HalfiPad or some similar tweak on my iPhone 5s gets me to safe mode wen I pull control centre like on iPhone X (right up corner) ? :
How to Put iPhone 5s in Recovery / Restore Mode - YouTube
iPhone - 4 / 4S / 5 / 5S / 5c / 6 / 6S - How to flash in DFU mode - iFixit Repair Guide
How to Force Restart an iPhone and Enter Recovery Mode
How to Boot in Safe Mode - iPhone, iPod, iPad - YouTube
How to Turn Safe Mode On and Off in Android | Digital Trends
iPhone - 4 / 4S / 5 / 5S / 5c / 6 / 6S - How to flash in DFU mode - iFixit Repair Guide