Unlock Telenor E5577Cs-321 (21.328.62.00.250)

Telenor network of Bulgaria has also launched E5577Cs-321 with the firmware version 21.328.62.00.250 and WebUI It has the high security did not allow to change the firmware. We have developed a special app which can unlock Telenor E5577Cs-321 router and the same APP can be used to unlock the router having firmware version 21.316.01.00.250 and WebUI The method used to unlock E5577Cs-321 is safe and device Data (NVRAM) will not get deleted.

Unlock Telenor E5577Cs-321

How to unlock Telenor Bulgaria E5577Cs-321 – 21.328.62.00.250

Download and Install Drivers from here. If you are facing problems with driver installation follow this link.

Phase I:

Download Telenor E5577Cs-321 Unlock App and open it. Go to User Login (Default username and password is unlockmyrouter).

Unlock Telenor E5577Cs-321

After successful login, Click on “Auto Detect Device”, your device information will get displayed.

Note: If you get the message connection failed or login failed, Download this file, extract and run it. It will enable the Com-Ports and will open Device Manager, check if there are two Com ports. If the ports are present, Click Login/AutoDetect. If you can’t see two ports, you have to fix the driver issue.

Unlock Telenor E5577Cs-321

After successful detection, Choose Flash Firmware and click the submit button. It will ask you to enter a code. Type the code here, which you have received from unlockmyrouter.com and click OK.

Unlock Telenor E5577Cs-321

Your E5577Cs-321 routerwill restart and the firmware installation process will start automatically.

Unlock Telenor E5577Cs-321

Wait for the installation to finish.

Unlock Telenor E5577Cs-321

Your Telenor E5577Cs-321 router is now unlocked and will work with any SIM card. Restart it to apply the new settings by choosing Restart Device option and click Submit.

Unlock Telenor E5577Cs-321

Unlock code is not free. You will have to pay 6 USD to get the App Code. Kindly proceed only if you agree to pay the same.


  1. When I press Login in HUAWEI E5577Cs-321 Unlocking App I get Can’t connect to server message so it is useless for now.

  2. Thank you. Now I get this message – “Unhandled exeption has occured in your applicaion. If you click continue the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately. The port ‘COM10’ does not exist.”

    I press continue and enter the correct boot code. Then get “Boot Shot Failed” message.


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