Today, I am writing for Unlocking of Huawei E397u-53 (E397) 4G LTE FDD USB broadband Data Card . Recently I have provided the article to unlock H3G Tre Italy E3131 (E3131S-2) dongle. Unlocking of Huawei E397u-53  4G LTE FDD USB modem can be also done through same process. It also comes with un customised firmware and can be unlocked easily without changing the firmware.
Huawei E397 4G LTE Modem
Huawei E397 4G LTE Modem

How to unlock E397u-53 (E397) 4G LTE FDD USB Modem?

1. Download Huawei E397u-53 (E397) 4G LTE FDD USB modem unlocker software from the download link which is provided at the end of the article.

2. Now disconnect the internet and change the default sim with another network provider sim (another than default network sim in Huawei E397u-53 (E397) 4G LTE FDD USB modem.)

3. Now connect the modem to PC or laptop.

4. Let it launch the software of the modem.

5. Close the software of modem (Huawei Mobile Partner software).

6. Now run the downloaded Huawei E397u-53 (E397) 4G LTE FDD USB dongle unlocker software.

7. Now detect your Huawei E397u-53 (E397) 4G LTE FDD USB datacard into the downloaded software.

8. Now put 8-digit unlock code in “Unlock Code(6-8 digits):” box and click on OK button.

9. Now your modem is unlocked forever.