How to unlock Huawei 3G USB E1550 Modem totally free?
1. Connect the model to PC and install the software of the dongle to run it properly.
2. Now eject the modem from your computer/laptop.
3. Note down the IMEI which is written on the reverse side of the Huawei dongle.
4. Run the downloaded software and go to the Huawei tab.
5. Put your IMEI number in IMEI box which is highlighted in above screenshot.
6. Now click on Calculate button.
7. Now the software will calculate the Unlock code and flash code.
8. Note down the Unlock code only.
9. Change the default SIM card with other network provider.
10. Again plug your E1550 modem in your computer/laptop.
11. Now let the run dashboard.
11. Now it will ask you for unlock code / password.
12. Just provide the unlock code which you have note down in the above step and click on OK button.
13. Once the device is accepted the correct code, you can enjoy your unlocked Huawei E1550 3G USB modem with any network provider around the world.
Now create a new profile according to the SIM card.