[21]

Can you modify Android or iOS system files or add your key? Rooting is not really an answer, because in that case you can also root Windows.

I was under the impression that you can only legally modify files for fair use or compatibility purposes, not just because you want so.

[kuschku]

Yes, and no.

On Android, I can change which keys the bootloader accepts for signing, and add my own.

From then on, the system will allow me to normally push updates, etc.

Apparently, on Windows, even as Root/Admin, I can not do so.

Additionally, that is correct in the US, but in the EU, having a license is equivalent to owning the copy, and having all relevant ownership rights, such as the right to modify, right to rent out, right to resell your copy, etc.

If you can buy a car, add a different FM radio, and resell it, so you can buy a Windows copy, modify the start button to show a penguin eating an apple, and resell it.

[21]

You can do whatever you want on Windows if you know your way. You can disable the system integrity checker if you are admin.

You are wrong regarding the right to modify software. It seems to say pretty clearly that you are only allowed to modify software only to make it work as intended:

Exclusive rights of the rights-holder: the translation, adaptation, arrangement and any other alteration of the program;

Limitations of those exclusive rights: A lawful acquirer of a program may reproduce, translate, adapt, arrange or alter the program, when it is necessary in order to use the program in accordance with its intended purpose.

http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=URISERV%3...

[kuschku]

> You are wrong regarding the right to modify software. It seems to say pretty clearly that you are only allowed to modify software only to make it work as intended:

That’s your interpretation of the law, the ECJ has ruled otherwise.

[21]

Please link to said ruling. The one I could find was related to the right to sell an unmodified backup copy.