Unlocking ZTE 627 Please Only Proceed If You Are Capable Of Understanding These Instructions! You Do This At Your Own Risk! If You Run Vista Do Not Try It, Only XP Make sure no simcard is inserted in the dongle. Plug it into the back of PC! As usb hubs and front ports can sometimes cause issues. If not already done so allow modem to install drivers. Let XP say “Device is installed & ready for use” Go to Start\Control Panel\System\Device Manager\ Make sure dongle is installed with drivers. Unzip file called “ZTE.zip” Run Flash Updater, when it has found device the download button will become active. Click Download and leave it to flash, Mine took 18 minutes. Do not unplug or use PC or you may break your dongle! When it has finished it will tell you! Unplug it & put in your Vodafone/T-mobile/Orange or O2 Sim or whatever. Run the auto run file and install Telstra connection manager, make sure there is no other connection manager installed, if there is then uninstall first. Depending on your type of sim you need to add the right config file for your provider. Search Google for the right APN etc for whatever type of sim you have. For an O2 sim on a contract it was- Click settings, Click Add, Config Name = O2Dial Number= *99#user = fasterpass= password APN= mobile.o2.co.uk DNS servers= 193.113.200.195 DNS servers= 193.113.200.195 I left the rest default and set the O2 config as the default provider.