Huawei E5577-321 Zain unlock guide
NOTE: This guide is only for Huawei E5577-321 Zain with firmware 21.200.05.00.375
Insert unsupported operator sim card into device - if it's locked to operator "A", then insert operator's "B" sim card and connect modem to PC. Check adapter bindings like shown here
Download Huawei HiSilicon firmware writerLaunch Huawei HiSilicon firmware writer softwareIf there is no DC-Unlocker/Rocker/Vygis or Infinity dongle connected to PC, then log in screen will appear. Use your account details to log in, otherwise you have a possibility to access software with free account that will allow you only to detect device How to get Username/Password check here
Afterwards, Huawei HiSilicon Firmware writer software window will appear with detected E5577 info
Click paper icon above Update button
Select 21.180.99.03.00 firmware file for decustomization. File can be downloaded from DC-unlocker support area which is accessed directly from flasher by pressing button "Enter support area"
Click Update button. At the end a message will appear that flashing has been completed successfully Now device ready for unlock
Launch DC-Unlocker client
Detect device by selecting Huawei modems from manufacturers drop down menu list, leave Select model as auto detect (recommended) then click magnifying glass button.
Wait till DC-Unlocker fully detects modem
Open Server tab, enter your username and password that you received after credits purchase. Click "Check login". (you can buy credits here www.dc-unlocker.com/buy).If DC-Unlocker/Vygis/Rocker/Infinity dongle is connected, only click " Check login ".
Open Unlocking tab, click “Unlock”. If there are more options below "Unlock / "Do job" button then leave it as it is selected by default
Wait till you see a message that device was unlockedUNLOCK NOT FINISHED YET!Now you need to flash device to 21.200.05.00.00 only then it will function as it used to. Repeat flashing process as before only this time with different firmware file (21.200.05.00.00)
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