Hello, I have an iPhone 15 Pro Max. This morning, the phone suddenly restarted and has since remained stuck on the Apple logo, with no progress bar displayed. The phone's storage is completely full. It has been several hours, and I am unsure how to resolve this. This phone is provided by my workplace and contains highly important, irreplaceable data. Losing this data would have serious consequences, as there is no way for me to recreate it. So far, I have tried charging the phone and using iTunes with the "Update" option, but the process failed. I am aware that there might be a way to access the data even in this bootloop stage, but I need guidance on how to proceed to avoid any data loss.