iPhone 6 failed to upgrade to iOS8.1.3
I attempted to update my iPhone 6 (64GB) to iOS 8.1.3 via iTunes - and now it's stuck in Recovery Mode, telling me that all my data will be deleted if I restore. Update is greyed out. If I bite the bullet and attempt to restore, the restore also fails. The screen on my iPhone is black - not even a 'plug me in to iTunes' picture.
I don't really want to restore (because I've got health book data in there that hasn't been backed up, and I assume that it doesn't get synced into iCloud) - but if it's that or no phone at all, it seems like the lesser of two evils.
Has anyone experienced a problem of this nature before? Can anyone help me unbrick my phone?