Recently popular 3G modems are produced to work with a specific cellular operator. If in your area different operators work with different conditions of communication quality, then you will have difficulty trying to connect via a SIM card of another operator.
Instructions
Step 1
To enable this, you will need to decode the modem. Look at the model of the device on the case of the modem. Also, the model must be indicated in the documentation and on the product packaging. You should not engage in modem firmware if you are not sure that you know the exact model of the device, since incorrectly selected software can harm the modem. It is also worth noting that all modem firmware operations must occur exactly as described in the instructions.
Step 2
Search for and download the modem firmware specifically for your model. Read reviews about this firmware version, as well as read the instructions for installing the program. Check all files with antivirus software.
Step 3
Recode the modem exactly following the instructions in the instructions. Remove the SIM card before the firmware procedure and do not disconnect the device from the computer, as flashing can harm the operation of the SIM card, which will subsequently affect the system of the entire operation of the modem. If you are using a USB extension cable to connect, plug the modem directly into the port on your motherboard.
Step 4
After turning on the modem for the first time after flashing, enter new data for setting up and connecting to a cellular operator: operator name, access point, dns, username and corresponding password. You can get such information from the operator or on the Internet on the official website. Typically, firmware programs provide the ability to work with all common types of cellular operators. To switch the operator, change the settings and the SIM card itself in the modem.
