Recently, Huawei has launched E3121 in Russian market with the help of MTS network and in India the same model of Huawei E3121 has been launched in open market. Today, I am writing the unlocking procedure of Huawei E3121 Customized Firmware Modem. Russian MTS E3121 Huawei modem comes with un-customized firmware and there is no need to flash it. Russian MTS E3121 Huawei dongle can be unlocked with only unlock code. Additionally, If you have problem is using unlock code then you can refer this article.

Huawei E3121 Modem
Huawei E3121 Modem

Step by step guide to flash the firmware of Huawei E3121 Customized Firmware Modem, Free Instructions :


  1. Download the correct firmware (You can use Indian OpenMarket Firmware) from the download link which is provided at the end of the article.
  2. Now plug your Huawei E3121 Modem to PC and let it install all the software and drivers related to the modem.
  3. Now disconnect internet and close the software of Modem.
  4. Now run the downloaded firmware update software.
  5. Now it will ask you password (firmware code).
  6. You can generate the firmware update from this link.
  7. Now put the password and wait till finish wizard.
  8. After flashing the firmware update, you can now unlock your Huawei E3121 Customized Firmware Modem through normal procedure which is mentioned above.


Note : Don’t use unlock code which is generated by Universal master code software. Huawei E3121 modem comes with new algo and it can not be unlocked with old algo unlock. Pay through paypal button and mail me model network imei in to get the correct unlock code for your modem.


From, now onward all the firmware update and software update will be shared in this article.


Download CD Content Huawei E3121 (MTS Russia) 48.8 MiB
Download Firmware Huawei E3121 (MTS / MTC Russia) 8.4 MiB
Download Firmware Huawei E3121 (Indian OpenMarket) 8.4 MiB