How to get permission for overwrite files in /system/fonts directory in Android phone 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.