Unable to Active iPhone !!!!!!

Recently i try to restore my iPhone 6 with MacBook pro (macOS Catalina 10.15.5). But it say error (4013 all the time. I have tried all the instruction that apple provided to this link https://support.apple.com/en-us/HT201444 . I failed all the time!

After that a technician told me it is hardware issue !!!

He fixed the error, and now iPhone 6 restore process successfuly done. BUT the new issue is "Unable to Active iPhone & Required to Update" when i connect to my Mac it says activating , after a while failed. I have try this apple link https://support.apple.com/en-us/HT201407.

It' is not a new iPhone . I have used it 1 month ago!!

My technician told me it is automatically open after 72 hours!! Is it true ??

Help me !!! I LOVE APPLE.