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 Bolt E5577 router in DC unlocker, you will get the following info :

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 WiFiHuawei 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 firmwares, 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 : 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.



  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. Hello
    E5577Cs-321 – IMEI: 860783037613486
    Official SIM Unlock Code was 39748105
    now i can’t modify the APN Settings and I think that another Firmware helps


  3. hello, i bought a used e5577 but i dont know whether it have been unlocked or not.
    the sim lock status is unlocked in dc unlocker, but datalock=1

  4. I have Huawei wifi device e7755s 932. It is stuck on instaling screen.. I waited 5 hours but still it showing instaling msg on screen.. Plz help imei number 866852025166999

  5. 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)

  6. Device name: E5577Cs-321

    IMEI: 860783030556211

    Wrong codes entered : 10 (unlock attempts left : 0)

    Pleas I Neeed Firmware Code

  7. imei; 866852024877646
    model e5577s 932
    if isert sim always showing ”installing” bfore work with saudi sim&jio sim in india plse help me

  8. I have posted a comment already for hasn’t been replied . please help me with the firmware code for Huawei E5577cs-321 imei 860783038042339

  9. unlock code for Huawei wifi E5577cs-321 imei-86783038042339 and huawei E5573s-856 imei- 866837023203092 with firmware codes

  10. Please help I can’t log-in into as administrator in webui or even with the apps. I just bought this used pocket wifi.

    IMEI: 864695032826002
    Model: E5577Cs-321
    Ver.: 21.316.01.00.00

  11. hello can you give me the code for

    Found modem : E5577Cs-603
    Model : Huawei E5577 (untested)
    IMEI : 867705021849480

    thank you.

      • Thanks KK Singh.
        I’ve tried with Huawei Firmware Update E5577Cs-603 v21. and did not work. But it works for Firmware Update Huawei E5577s-321_21. (General), but not compatible with my device E5577Cs-603.
        Any advise? Thanks

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