support.apple.com/iphone/restore
Howdy! my iphone 6 shows me support.apple.com/iphone/restore. I understood that I have to install manually, but when I plug the phone into the PC, the latter does not see it
Connect iPhone to Computer
You haven't mentioned whether you have a PC or Mac
Use your USB lightening cable --> Resolve USB-related alerts in iTunes - Apple Support
If unable to connect --> If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
PC or Mac
- For your Windows PC —> Troubleshooting issues with iTunes for Windows - Apple Community
- For your Mac --> If your computer doesn't recognize your iPhone, iPad, or iPod ...
Use genuine cable --> Identify counterfeit or uncertified Lightning connector accessories ...
See how to --> Sync your iPhone, iPad, or iPod using iTunes on your computer ...
To reset the passcode -> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your ...
Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support
Here is the process to --> Backup on iTunes.
If you are experiencing an issue not listed here, contact support