Have a 13 Pro Max with a third party screen soft oled. Did the ios 18 update and now have a black screen. The phone works though, I can unlock it and it makes sound but screen stays black. I tried to enter recovery mode and install ios 17.6 and I could see the apple logo on my screen so I know my screen works fine. But the downgrade does not work because I get an error around 20% with 3utools. Did Apple really disable all third party parts with the new ios?