Default [Q] 70b it 3g usb

Hi there,
I recently got the ARCHOS 70b internet tablet (also known a70s2).
I have tried to configure my 3G usb stick (zte mf190) but no success at all (by this manual).
I ave tried several times but the commands dosen't work
9not copying anything).
I have installet this rooted firmware (2.80).
I would like to get some help in making it work.
thank you all for your help

Ben