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I am trying to change some sys values but I don't seem to be having much success.

In my case I am trying to change values of files in the folder


e.g. the file bInterfaceClass which currently has value 09

My tries: (In shell, as root)

chmod 777 bInterfaceClass
echo 07 >> bInterfaceClass

I didn't receive an error but when looking up the value

cat bInterfaceClass

It is still 09

Now looking up this file in Root Explorer, I can see that the last modification date of the file has changed, so my guess: something resets the value of such a sys file as soon as it changes.

Can anyone shine some more light on this issue? How can I change the value?

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