host file editting topic

did everything like this:

1. On your device open your browser and go to: ghisler. com / android .htm . Download and Install Total Commander for Android... And open it
2. Install it in your android mobile
3. Open the total commander from your android mobile and go to: “File System root”
4. Search for the folder: “etc” and open that folder
5. Now search for the file name “hosts” and click on it .
6. Select edit file and add " # " before 2nd line like this " #74.125.93.113
I COULD NOT SAVE!!!! I receive this message: ERROR WRITING TO FILE:/ETC/HOSTS