Huawei has recently launched E5770 and was listed on the company website. Now, I have got the solution of unlocking too. We have just unlocked Huawei E5578 which was locked to STC Saudi Arabia.

Unlocking of Huawei E5770 needs patience and may take up to 30 minutes.

Before proceeding the unlocking of Huawei E5770 mobile WiFi router, you need to download some freeware:

  1. Latest Huawei Mobile Partner for drivers
  2. Universal Master Code Tool to generate firmware code or you can also leave comment
  3. Firmware Huawei E5770s Update_21. (Universal)
  4. Firmware Update Huawei E5770s Update 21.313.23.00.00 (General)
  5. DC unlocker

How to unlock Huawei E5770 mobile WiFi router?

  1. Install Huawei mobile partner in Windows PC and let it finish.

2. Run universal master code tool and generate firmware code through Huawei tab or comment below to get the firmware code/password.

3. Reset the Huawei E5770 and connect to Windows PC with its default data / USB cable.

4. Run firmware

5. It will put your device in download mode and detect your device.

6. It will ask you password, input the firmware code which you have already got in Step 2.

7. Wait till finish.

8. Now install DC unlocker.

9. Detect your Huawei E5770 router under it.

10. Copy and paste the below command at the end of the result:

“AT^NVRDEX=50503,0,128” (without quotes) and press enter from the keyboard.

11. It will generate some NV codes in hash format.

12. Copy all the details and save it in a Notepad file. NCK / unlock code will be generated for the E5770 device and emailed you back after receiving the payment.

Note: After getting the unlock code, update the device with Huawei E5770 Firmware 21.313.23.00.00; which you have already downloaded.

Note II: Unlock / NCK code is not free. Its charge is only 6 USD, which you can pay through PayPal. Once I will get an email from PayPal, I will ask for NV hash code and will convert into the unlocking code and will email you back within 8 hrs.

Note III: Those who don’t want to change the firmware and the device is asking for unlock code after changing the SIM card, can place an order from this server.

Update: O2 U.K. has launched the E5770s-320 which comes with firmware and WebUI If the device is asking for unlock code after changing the SIM card then you can place an order here. There is no need to proceed with above steps.


    • This instruction is either untested or works only for some models with older firmware versions. This router uses v4 unlock codes and would not allow to use v2 or v201 flash codes. AT^NVRD/AT^NVRDEX are also blocked without entering OEM (DATALOCK) code, so you can’t get NVRAM 50503 contents.

      Fortunately, flashing the same firmware version would skip flash code requirement, and there’s leaked Huawei firmware signing key available, so you can just re-sign technological firmware to make it look like current firmware.
      Also v4 calculators are all available for free, just search.

  1. Found modem : E5770S
    Model : _Unknown Huawei modem_
    IMEI : 867472020465111
    Serial NR.
    Firmware :
    Dashboard version : WEBUI_17.
    Web UI version : WEBUI_17.
    SIM Lock status : Locked (Card Lock)

    AT^GODLOAD works it moves the modem into download mode, no code is required.

    E5770s_Update_21.313.23.00.00 Error 13. Update Failed
    E5770s_Update_21. Error 13 Update Failed
    E5770_Update_WEBUI_17. Update Failed

    Can you advise what else can i do? thx

  2. E5770s_Update_21.313.23.00.00 does not accept the above mentioned firmware code. You have 3 attempts before it will lock your modem forever.

    E5770s_Update_21. does not work.
    E5770s_Update_21. does not work.

  3. I also have error 19.
    I think it because firmware in my device has later version than any firmware update you have provided.
    (mine is

    Do you have any latest updated firmware that can work with DC unlocker?

    Note : I’ve tried to use DC unlocker with my current firmware and it said “For unlock, may require firmware change”

  4. Hi,

    I have unlocked Huawei E5770s 320, it is not working for 4g in KSA. do you have any idea why it is not working on STC KSA 4G network? I have friends whose e5770s perfectly working on the 4G network. Mine works on 3G but not connecting 4g. maybe I should do some firmware updates? any help will be appreciated.

  5. I update my router with this and it died just Huawei logo and nothing
    is there anything I can do ?
    model : E5770s 320


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