git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/ Search for hg-rp2725.bin in the tree. This is the most reliable source.
: Some updates may reset your router to factory defaults. Save your configuration (APN, Wi-Fi password, etc.) before starting so you can restore it quickly. Where to Find the File How do I update the firmware version of my HUAWEI router hg-rp2725.bin