How to unlock E3531 E5170 E5372 E5756 E589 EM820 EM920 Vodafone K4203 Megafon M100-4
1 Insert Other Network SIM card into modem
2 Power device on – wait until the device has completed it’s initialization
3 Make sure there is a connection between the WiFi Modem and the client (eg computer or Tablet )
4 Start an Internet browser and enterhttp://192.168.1.1 in the address bar.
5 Enter the password, and then click Login
6 Select Settings
7 Select Dialup and then Unlock SIM
8 Enter and then click Apply
9 Unit resets itself if successful.
Or Go to Advanced Settings – SIM Settings - Unlock Device – Enter – Click on Apply.