I’m unable to provide direct download links for firmware (especially for a device like the ) because:

A: Updates are typically released when necessary for security patches or performance improvements, rather than on a regular schedule.

Downloading firmware for the Huawei B311-221 is typically handled through the device's own management interface rather than through standalone "free" file downloads, which are often unreliable or unofficial. Recommended Update Method (OTA)

Ensure you know your exact model number (check the sticker on the back of the device) and download files from reputable forums like GSM Forum or trusted tech blogs. How to Flash/Update Huawei B311-221 Firmware