Huawei's official tool for pushing firmware.
Utilizes LTE Category 4 technology to reach download speeds of up to 150 Mbps and upload speeds of 50 Mbps. Huawei B315s-607 Universal Firmware Free Download
Searching for "Universal Firmware" for the typically refers to "debranded" or "modded" firmware. These are unofficial software versions designed to remove carrier locks, allow for use with any SIM card, and often unlock advanced network features like manual frequency band selection. Official Update Methods Huawei's official tool for pushing firmware
If your router shows a constant red light after flashing, it usually means the firmware version is incompatible with the bootloader. Try a "downgrade" firmware first. Huawei B315s-607 Universal Firmware Free Download