How To Unlock Huawei E5577s/Cs-321 MTN 4G/Viva MiFi

REQUIREMENTS

1. Balong USB downloader
2. Huawei Drivers V5.0xxx
3. Huawei Firmware 21.180 (usbloader already inside)
4. Huawei Firmware 21.316
5. WEBUI17.1xx

GUIDE

• Install the Huawei drivers
• Disassemble and boot shot test point with gnd as shown (just like other boot shot already known)
• USB COM detected- you should have PC UI com port detected in device manager
• Run Balong Downloader and flash Usbloader.bin file from Huawei 21.180 firmware
• Install firmware 21.180; run setup updater to install finish

 NB: LCD shows installing during firmware update process[/color

[color=#ff33ff]Your device should reboot into Factory Test Mode (FTM ) showing on screen

• Install huawei WEBUI17 ; run updater to install finish
• Install Huawei firmware 21.316
• You should see battery error on screen at begin to resume user information; dont worry just hold the board and insert the battery gently
• It should now complete and reboot to Huawei Logo and proceed to main interface
• Note your imei ; read modem info with dc unlocker and  write IMEI via AT command

 AT^CIMEI="IMEI" 

• You can now do a quick repack and insert Sim; WebUI as Usual ...........
• 3g and 4g all Working Perfect