I'm tryng to overwrite the fonts files (*.ttf) in my android device (Dell Aero). my new fonts are resident in the sdcard and I'm using the following command in a command shell (on the phone):

cd /sdcard/MyFonts/ cp *.ttf /system/fonts/

I get a "permission denied" echo from the cp command.

How should I do it correctly?

Thank you


You'll have to root your phone first, and probably set it S-OFF to be able to write to the /system directory while booted.

See this question for information on what rooting is. S-OFF is the next step that gives you full control all of the time. Neither are something you should do without understanding the risks.

  • Thank you for your answer.I'm a beginner in Android so can you please explain what the meaning of root the phone and set it as S-OFF? also, how shall I do it?
    – shaeli
    Oct 23 '10 at 5:49

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