Before searching for an update, you need to know what you are currently running.
Example: If it says 21.328.62.00.00, that is your current firmware version.
Huawei does not publish consumer firmware updates directly on a public website for this model. Sources: huawei e8372h-155 firmware update
Warning: Most firmware files on random file hosts are unsigned mods. They can brick the stick.
Some firmware updates don’t enable all hardware bands. To check: Before searching for an update, you need to
To enable a specific band (e.g., B28 – 700 MHz):
AT^BAND=5,28
But this requires an unlocked modem (not just firmware). That’s a separate process using AT^CARDLOCK. Example: If it says 21
As of 2025, the most stable firmware for the E8372h-155 is 21.333.01.00.155 combined with WebUI 21.100.31.00.155. This version fixes the "SMS memory full" bug and improves IPv6 handshake speeds.
Updating the firmware on your Huawei E8372h-155 is a great way to extend the life of your device and ensure you are getting the best possible LTE speeds. While the process requires a bit of technical caution, following the steps above will ensure a smooth upgrade.
Have you updated your Wingle recently? Did you notice a speed boost? Let us know in the comments!
Disclaimer: The instructions provided in this post are for educational purposes. We are not responsible for any damage that may occur to your device during the firmware update process. Always proceed at your own risk.