Today, I will talk about two Huawei modem code writer software, which I have already introduced in the previous posts. Both “Huawei Modem Code Writer Tool” and “CardLock Unlock Tool” are great, but I want to highlight something with you. Yesterday, I was unlocking one stubborn Huawei E173bu-1 modem. I flashed it properly, and there was no error. After flashing the Huawei Airtel, my modem firmware was After changing the SIM card, the Airtel E173Bu-1 modem was not asking for an unlock code.

Then I tried to write the unlock code using “Huawei Modem Code Writer V1.0b by Segmaster,” and I have got a failed error.

Huawei Modem Code Writer V1.0b by Segamaster
Huawei Modem Code Writer V1.0b by Segmaster

Before this, I had got success in other modems, so I have tried to write the unlock code in the Airtel Huawei E173BU-1 dongle many times, but the result was the same, fail.

Download Huawei Modem Code Writer V1.0b by segmaster

After the various failed to unlock attempts, I decided to try the “CardLock Unlock Tool” to write the unlock code in my Airtel-branded modem. I was shocked as in the only first attempt, and I had the success to write the unlock code.

CardLock Unlock ToolDownload CardLock Unlock Tool for Huawei Modem

You should now decide which one is the best Huawei NCK sender and which one you should use.

CardLock Unlock tool is available to download for Mac PC users.

Download CardLock Unlock Tool for MAC


  1. Hii, is there solution for B183 to acess and see wifi password. I dont have botom pease where wifi passwprd is shown. Maybe with usb to computer connection?

  2. Can you unlock e6878-370?
    Also my e5372 got locked (still wondering how) and says that the router is permanently locked as I have no more attempts

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