Eir Ireland locked E5577Cs-321 can be unlocked for as our team has successfully developed the tool. It is basically modified firmware 21.329.62.00.394 of Eir Ireland E5577Cs-321. This device security is too high, so all normal firmware gives error.

The best features of our modified firmware is that it can unlock your router without opening the screws of the device. Means, for unlocking of Eir Ireland Huawei E5577Cs-321, there is no boot shot involved.

Earlier also our team had also provided unlocking of Fastlink Iraq Huawei E5577Cs-321 which comes with firmware version 21.328.62.00.401. It can be also unlocked without opening the screws.

This modified file will work with only firmware version 21.329.62.00.394, which comes locked to Eir Ireland E5577Cs-321 Huawei router.

How to Unlock Eir Ireland Huawei E5577Cs-321 (Firmware 21.329.62.00.394)?

1. Download the unlocking file of Eir Ireland Huawei E5577Cs-321 from the link which is provided at the end of this post.

2. Run on any Windows PC (32-bit or 64-bit / Win XP, Win 7 or Win 10).

3. Unlocking app of Eir Ireland E5577Cs-321 will generate the hardware ID, copy and email when asked (Charge is 10USD).

4. Our team will provide the key according to the hardware ID.

5. Once you are ready with key, download Huawei latest drivers.

6. Unzip using WinRAR software and run the setup file.

7. It will install the correct drivers in background.

8. Now download and run DC unlocker software.

9. Click on Search Magnifying Glass.

10. It will detect your device and show complete details.

11. At the end of the result, in a new line, paste AT^GODLOAD.

12. Press Enter from the keyboard.

13. Wait for 10-second to load the drivers.

14. Now run the Eir Ireland Huawei E5577Cs-321 unlocking file, which you have already downloaded.

15. Fill the registration name and key which you have got by our team.

16. Click Register to start flashing the firmware of your Eir Ireland E5577 router.

17. Once flashing completed, again detect the device in DC unlocker software.

18. At the end of the result, paste the following:


19. Press Enter from the keyboard.

A response will come as OK.

Now your Eir Ireland locked Huawei E5577Cs-321 (Firmware 21.329.62.00.394) is unlocked permanently to use with all sim cards.



      • After device is detected in Dc unlocker and when AT^GODLOAD is pasted in a new line below the result it says OK. But installation process freezes/hangs on modem device. I downloaded and installed the latest Huawei drivers as instructed by you. What should I do?

  1. Being connected to a PC I have run the unlocking file after it goes in download mode but I get the message ‘Your registration information is incorrect.’ This could be due to the careless mistake I made earlier by successfully registering the hardware ID with the registration name and key I received from your team, before my modem device was detected by Dc unlocker software and pasting AT^GODLOAD command.. I am sorry for this mistake and hope you can help me to rectify this. Thanks.

      • With grateful thanks I am very happy to inform you that this time everything worked perfectly. My router is now unlocked and I have just tried a sim of another provider and it works with no problems. I very much appreciate this great service you and your team are providing on routerunlock.com and thank you for patience in helping me out.
        I will definitely recommend this website to all.
        Thanks and kind regards.

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