nope, you can't delete the protected files. u can only do it if u can manage to hack the file system. for older phones like t610 there's a trick called the 13 second trick. but i dunno if this will work wid newer phones.
If you delete the protected files then you have to hack the file system. As Infra said. But remember if you do so than be ready to pay the price because the warrenty will be void. And if you make any error then the phone may become dead. Which will lead to another hacking to get your phone working again......
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