Can anyone tell me how to get a user manual for my ZT280 running ICS 4.0.3? I am stumbling my way through trying to set up my wife's tablet (which she likes very much) for some of the other things it can do. I need to know what kind of 3g usb I need for ATT sim card? How to get the latest fixes on firmware from Zenithink.com. Tried once but was told I needed a micro sd card. Got that but have seen post of problems with people putting the card in wrong. Mine is still running and I don't want to tear it up. Any suggestions besides 'Go buy an I-pad'.