Go with firmware 3372m1 to 3372m2
All of the following procedures must be performed in the Windows 7 operating system when turned off antivirus!
Click on the magnifying glass and wait until the program will see the modem (need some just click on the magnifying glass).
Open the second folder and run the installation file E3372h-153_Update_22.329.07.00.00_M_AT_05.11_nv.exe
After the installation restart the dc-unlocker2client.exe click on magnifying glass and wait until the program will see the modem (need to repeatedly click on the magnifying glass).
Then, run the file Update_WEBUI_17.100.18.03.143_HILINK_Mod1.21_V7R2_9x25_V7R11_CPIO.exe in the third folder and wait for the firmware installation.
After that, disconnect the modem, insert the sIM card and go to the web interface. To do this, open any browser and in the address bar, type 192.168.8.1
In the edit Lock TTL select 64 , in line Release the modem under all sIM cards select On Copy from line Random IMEI , a string IMEI IMEI (or use your IMEI calculator). Click the Apply button below.
Step 2. It is necessary to fix the change IMEI and TTL, for this line in Reset from the IMEI Protection , select the line AT ^ INFORBU .