I had provided download links of some firmware for Huawei’s new Algo modems here. Firmware is an internal software of the modem, an essential part of the dongle, and without firmware, the data card can not function properly. Some network providers launch Huawei modems without customized firmware (unlocked firmware), and some network provider locks the firmware of Huawei modem which is called customized firmware. You might heard that the customized firmware of the Idea E303 (E303Ds-1) modem. No hackers till now could unlock the Idea netsetter E303 (E303Ds-1) modem.
But still, you have good luck. If you have purchased an E3276 modem from the market with customized firmware, you can easily unlock it with unlocked firmware (un-customized firmware). There is no need to purchase another modem to use another network sim in the locked E3276 Huawei modem.
How to Unlock customized firmware Huawei E3276 modem to use another network SIM?
1. Go ahead at the end of the article and download the unlocked firmware of Huawei E3276 broadband 4G LTE modem.
2. Now disconnect from the internet and plug your Huawei E3276 modem into your PC.
3. Now, close the default software of Huawei E3276 (if it runs).
4. Run the downloaded uncustomized firmware (software) update.
5. Now, it will ask you for a password.
6. Provide flash code as the password.
7. Follow the on-screen instructions, and after a few minutes, your Huawei E3276 modem will be updated with new un-customized firmware.
8. Now, you can follow the unlocking of the Huawei e3276 modem to unlock your E3276 modem.
Download Huawei E3276 Modem Firmware E3276s Update_21.436.03.00.00
Download Huawei E3276 Modem Firmware E3276_Update_21.192.09.00.00