Installed the iOS 26 Beta on my iPhone 13 Pro last night, hated it. I wasn't aware that there is a supported way of restoring back to iOS18.5, so I (foolishly) opted to flash the iOS18.5 ispw file onto my device using a 3rd party tool. Now, my device is stuck in a state between. Unable to flash, unable to use itunes to restore, randomly gives error codes during restoration attempts. Worries my device may be lost permanently! Please advise.