Flashing ios 9.3.3 from ios 12.4.2

[Mattia Sabadell]

Hello, please help me!
I want to do the downgrade from iOS 12.4.2 to iOS 9.3.3 for my iPhone 6. I ask you if is possible. But I want to do this from a Windows PC because the iPhone has the iCloud lock. Please, can you help me?
Thanks

 

[Tartarus]

Hello, please help me!
I want to do the downgrade from iOS 12.4.2 to iOS 9.3.3 for my iPhone 6. I ask you if is possible. But I want to do this from a Windows PC because the iPhone has the iCloud lock. Please, can you help me?
Thanks

No, on all questions.
If there is an iCloud lock, only the owner will be able to perform actions on the iPhone. Also, you can’t downgrade.