My iPhone 14 Pro (running iOS 27 beta 1) is not booting after discharge of battery (due to not being used for about 10 days). How to restart and update to beta 2 or use it otherwise? I have kept it connected to wall outlet charger for the past 2 hours, and have tried Forced restart (press and quickly release the Volume Up button, press and quickly release the Volume Down button, then press and hold the Side (Power) button until the screen goes black and the Apple logo appears).
But nothing works, and the iPhone remains dead.