my iphone is failing to restore and update and constantly displaying error 1 and error 75

pikkibruce wrote:

how do I restore my iPhone 7 plus, i tried updating my software to iOS 15,1 but on restoring and updating the iPhone, the system stops abruptly and displays error code -1 and 75 constantly

follow all steps for error 1 here iOS update and restore errors - Apple Support

I don't see error 75 on the list.