(adsbygoogle = window.adsbygoogle || []).push({}); Well I've had a look around on Google, apple forums etc... but can't get it to work

Basically I'm trying to update my OS from 9.3.4 to 10.2 using iTunes so I can jailbreak it - but everytime I either get a 3194 error, or a 'device not found' error...

I've tried:

• Different cable
  
• Different USB port
  
• Adding apple ip to hosts file
  
• Updating iTunes (latest version)
  
• A different PC
  
• DFU mode
  
• Restore mode
  
• Disabling AV
  
• Disabling Firewall
  

Anyone offer any other suggestions?

Thanksss

EDIT: iPhone 6s 64GB - Never before been jailbroken.