Unlock Huawei 3G Modem E173, E1550 and E1750

How to Unlock Huawei 3G Modem E173, E1550 and E1750? Like zte, micromax Huawei is the leading manufacturer of 3G Modem as we all know. Before starting the unlocking process of Huawei Modems, there are few things which you should know. First, make sure that your data card is detected in your desktop / laptop / PC and you should know your IMEI number (IMEI number is a 15 digit number printed on the device). To know the 15 digit IMEI of your modem, see the back side of the modem.
Universal master code calculator
Universal master code calculator

How to unlock your Huawei E173, E1750 or E1550 data card :

1. Download Universal Master Code.exe from the download link which is provided at the end of the article. Enter your 15 Digit IMEI number in Huawei tab, as shown in the below screen and press Calculate for Unlock Code and Flash Code.

2. Plug your data card with an unaccepted SIM to your PC.

3. For E173, It will prompt for an unlock code, just enter the Unlock Code you got from Universal Master Code.exe. (Your Huawei E173 modem is now unlocked and can be used with any another SIM after creating the profile).

Note : But, E1750 and E1550 modems does not prompt for unlock code, hence, you have to download   HUAWEI_MODEM_Code_Writer.zip from the below link and continue to step 4.

4. Extract the zip file and run HUAWEI_MODEM_Code_Writer.exe
Huawei modem code writer by segamaster
5. Press ” Please select Com Port “
Select com port - Huawei modem code writer by segamaster
6. Press ” Detect” and choose your modem type in dropdown list. Then press ” Accept”.

7. Press ” Unlock Modem “, a pop up window will appear asking you to enter the Unlock Code.

8. Enter the Unlock code from Universal Master Code in the field provided and click ” OK “.

9. Press ” Unlock Modem ” (Your Huawei modem E1750 or E1550 is now unlocked and can be used with any another SIM after creating a new profile).

Note : The above guide cannot be applied with Customized Firmware modem, to unlock customised firmware you need to flash the modem first, then it will accept the unlock code.

Download Universal Master Code Calculator Final 2013
Download Universal Master Code Calculator Final 2013
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27 thoughts on “Unlock Huawei 3G Modem E173, E1550 and E1750

  1. Pls provide me any process to unlock my Huawei E303s data card and also provide unlock code foe below imei number:

    Manufacture:Huawei
    Model:E303s
    IMEI:867648011913868

    i have tried to unlock by above tool,it was showing SEND ERROR…
    pls provide correct unlock code.

  2. please provide me the unlocking code for my E303s modem. I had tried every method of unlocking it. but it was unable to lock. i too have tried this method but it shows send error.
    So please provide me code for my modem.
    IMEI No.867648011701453, Manufacturer :- HUawei, model E303s. Please reply as early as possible.

  3. Pls provide me any code to unlock my Huawei E303s data card. Manufacture:Huawei Model:E303s, IMEI:867648011701453

    I have tried to unlock by above tool,it was showing SEND ERROR…
    pls provide correct unlock code. i will be very thankful to u

    • Huawei E303 modem is of new algo. Have you got the unlock code of new algo huawei modem then you leave the full details about your modem.

  4. Any One plz provide me the unlocking code for this data card
    – Manufacturer :huawei
    – Model :E1731
    – Revision :21.157.13.00.910
    – Phone IMEI :863791011756574
    this are my data card details and if i try the above method am getting the following error

    Send Unlock Command… ERROR

    so some one plz send me the Unlocking code plz my phone no. is 8892526578 some one plz help me

    • It is new algo modem and unlock code from above mentioned software will not work. If you want then i can provide you in Rs. 55 only, agreed then message me.

  5. could you pls provide code writer tool for vodafone huawei K3770 modem. i tried with this tool, but it shows unlock code error.. what to do…

    • Above mentioned software works well with K3770 huawei vodafone dongle, i think you are using wrong codes, so the software is giving error.

  6. IME no- 860030017309887
    unlock code- 66276148
    flash- 37066860

    could you pls make sure whether this unlock code is right or not.
    when apply this code, it shows ERROR.

    • Your code is wrong, don’t apply more it will be locked forever. Want to purchase the correct code then either pay through above paypal button or mail me in kamlesh2011@gmail.com for another payment method.

  7. Found Phone, Phone Info:
    – Manufacturer :huawei
    – Model :E1750
    – Revision :11.126.16.05.850
    – Phone IMEI :355013048829885

    Send Unlock Command… ERROR
    provide solution

  8. Found Phone, Phone Info:
    – Manufacturer :huawei
    – Model :E173
    – Revision :11.126.85.00.209
    – Phone IMEI :354369041281222

    Send Unlock Command… ERROR

  9. – Manufacturer :huawei
    Device name: E1731
    Application port: COM3
    Serial number: 8C4369042434614
    IMEI: 354369042434614
    Hardware Version: CD1E153M
    Software Version: 21.005.11.03.284

    Send Unlock Command… ERROR
    provide solution

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