I started the update as usual over wifi and it all downloaded no problem. It then got to about 3mm away from finishing the update progress bar and just sat there for ages. Eventually it went to the plug into iTunes screen, so did that and it said I need to restore or update. I tried to update and kept getting 6009 errors and eventually managed to get the update to download. Now I'm getting error 9 (USB connection error) when it tries to install a full factory restore. I'm on an MBP, tried both USB ports and two genuine lightning cables, all of which have made no difference. Not sure what to do now, my phone is unusable! I've had iPhones since the 3G and this is the first time I've ever had a problem installing an update. It gets to the Preparing iPhone message, then waiting for iPhone, then the progress bar appears on the phone and it says Verifying on iTunes and error 9 appears.