Update: Our team has got the success in various new routers and modems without opening the screws. It can be unlocked through a single file only. All premium unlocking solutions are free now.

Huawei has recently launched E5577 mobile WiFi router. It is currently available in Indonesia which is locked to Bolt network, and known as Bolt Slim 2. It is also available through Zain network in Saudi Arabia with a model No E5577s-321 with firmware version

When you will detect the Huawei E5577 router in DC unlocker, you will get the info like :

Found modem : E5577Cs-603
Model : Huawei E5577 (untested)
IMEI : 86770*********
Serial NR. : 2XDFG15612015672
Firmware :
Dashboard version : WEBUI_17.
Web UI version : WEBUI_17.
SIM Lock status : Locked
Wrong codes entered : 0 (unlock attempts left : 10)

Huawei E5577 Mobile WiFi

Huawei E5577 comes with Authorization version 4 (V4 Algo) and there is no direct way to unlock it. For unlocking you have to flash the device and I need testers, since I have not personally used it.

In this post I am sharing two firmware’s, any volunteers can test it. After testing leave message via comment, unlocking solution will soon come. If any person have solution then also he can share it.

How to update the firmware of E5577 Huawei mobile WiFi router?

1. Download the firmware from the below link.

2. Disconnect internet and close the browser.

3. Run the firmware update.

4. It will ask you password (leave comment with model and IMEI to get the firmware password).

5. Input the password and wait till finish wizard.

Download Firmware Update Huawei E5577s-932

Download Firmware Update Huawei E5577s-321_21. (General)

Below two mentioned firmware needs datalock code in flashing.

Download Huawei Firmware E5577s-321 Update 21.316.01.00.00

Download Huawei Firmware Update E5577Cs-603 v21.

Update I: If device is asking for datalock code then first put device in download mode by using command:


Note: Now device LED light will keep blinking. Now in firmware / webui / software, in any update device will not ask any password like : firmware code / password / datalock code.

Update II : Several network provider of various countries has launched Huawei E5577, which comes with different firmware version. These devices does not accept the firmware, either gives error 13 or needs datalock code. Our team has modified these firmware to unlock these router. Some are the following:

Unlock Zain Huawei E5577S-932 (Firmware 21.327.62.00.1367)

Unlock STC Saudi Arabia Huawei E5577s-932 (Firmware

Unlock Viva Kuwait Huawei E5577cs-321 (Firmware 21.328.62.01.397)

Unlock Mobily Saudi Arabia Huawei E5577s-932 (Firmware 21.315.01.00.82)

Unlock Viva Kuwait Huawei E5577Cs-321 (Firmware 21.329.63.00.397)

Unlock Zain Huawei E5577S-932 (Firmware 21.329.63.00.1367)


  1. I want to ask, I bought a used Huawei E5577 and it has been unlocked so I can use any provider card, but the seller forgot the user and password to enter so I can’t change the WiFi password. I tried to push the reset button but it was stuck in the logo Huawei and did not change at all. how do i reset the user and password to enter to be able to change the wifi password?
    From Indonesian

  2. Found modem : E5577Cs-603
    Model : Huawei AuthVer 4 modem (New)
    IMEI : 867705023838218
    Serial NR. : 2XDFG16A27006135
    Firmware : 21.319.01.01.66
    Dashboard version : WEBUI_17.
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10) this isi when nosimcard when simcard inside it will
    SIM Lock status :locked
    Wrong codes entered : 10 (unlock attempts left : 0)

  3. Hi,

    I would like to force my modem to connect to 4G network only but I cannot find the setting.
    Under Network Settings, only these 2 options available. Could someone help me? Thanks.

    Network Settings

    Support LTE networks: On

    Network Search
    Mode: Auto or Manual

    Below is my modem details.

    Hardware version: CL1E5573SM02
    Software version: 21.316.01.00.00
    Web UI version:

  4. hi sir….

    i just update my router and now cannot detect in my pc, because i forgot to put my battery in my router, i already try to install all huawei driver and still cannot detect.

    and router still show huawei logo for 2-3second.
    and if no battery show logo 2-3second and show battery error on display.

    fyi router unlock and bypass e5577cs-603

  5. I didnt know. now i already follow your guide and the device already in installing mode, and it detected and i try to update with the same firmware but keep stuck in step 3.
    And show error 21, failed to restore user information and this is my 2nd attempt keep showing the same msg

  6. Again, – thank you so much for helping me.
    So i found:
    E5577Cs-321_UPDATE_21.319.01.00.104_WEBUI_17. –
    which has to be flashed with balong tool.
    Is it safe do do it?
    This time i will be patient and i will wait for your answer, before i do anything.
    I’m afraid of doing anything wrong again.
    This is my status now:
    Found modem : E5577Cs-321
    Model : Huawei AuthVer 4 modem (New)
    IMEI : 860783039514310
    Serial NR. : 0123456789ABCDEF
    Firmware : 21.316.01.00.00
    Compile date / time : Dec 15 2015 15:01:07
    Hardware ver. : CL1E5573SM11
    Dashboard version : WEBUI_17.
    Web UI version : WEBUI_17.
    SIM Lock status : unlocked
    Wrong codes entered : 0 (unlock attempts left : 10)

    Greetings from germany

    • If your device firmware details are E5577Cs-321_UPDATE_21.319.01.00.104_WEBUI_17.

      Then detect in DC unlocker, at the end of the result paste the following:


      Press Enter from the keyboard.

      Copy all the results along with locked to which country and network. We will provide software to unlock directly. No need to use Balong tool.