Vodafone K3770-Z Another Solution 
How to use this file :-
Steps
1. Insert Modem to PC/Laptop. Install Vodafone Software.
2. Open Vodafone Software and check Modem is detected or not.
( If not then change USB Port of Modem. )
3. Now close Vodafone software run MultiCDMADownLoad.exe
4. Port of Modem will be automatically selected.
5. click Software Version button and Select "K-3770Z_Download_File_NiRaV" folder.
6. Click arrow( Download ) button.
7. This process takes 2-5 min..after Finish remove and replug modem.
8. Install New MTS Dashboard..
9. Modem Unlocked.
Download Unlock Kit From Here :
Directory Structure of ZIP File.
[+]----K-3770Z_Unlock_Kit_NiRaV
|
|-------[+]--K-3770Z_Download_File_NiRaV
|--------------[1.] productConfig.bin
|--------------[2.] secondary_boot.wrapped
|--------------[3.] mass_storage.wrapped
|--------------[4.] loader.wrapped
|--------------[5.] factory_tests.wrapped
|--------------[6.] modem.wrapped
|--------------[7.] nocd.iso.wrapped
|
|-------[+]--K-3770Z_Download_Tool_NiRaV
|--------------[1.] RecordCSV.sdi
|--------------[2.] Encrypt.dll
|--------------[3.] MultiCDMADownLoad.exe
About The Firmware :
=> Vodafone K3770-Z = ZTE MF192.and this version support max 7.2Mbps DL & 5.76 Mbps UL.
=> BSNL will not work in this version may be future version support the BSNL network.
=> I have too many firmwares for K3770-Z if anyone want to test then contact me privately. may be anyone will support BSNL
From Blog :
Vodafone K3770-Z Unlock Solution by NiRaV No Mirror Linking of this file Download Link to my site only..
Best Regards,
NiRaV_SoN!