Click and save the XML backup securely to your local drive. 4. Upload and Flash the New Firmware Navigate to System Tools →right arrow Firmware Upgrade .
Official firmware for the is generally not available for direct public download. Because this device is an Optical Network Terminal (ONT) used by carriers, firmware access is restricted to authorized enterprise accounts or provided directly by Internet Service Providers (ISPs) . 🛠️ Official Access Methods huawei echolife hg8546m firmware download link
Reset the device to factory defaults by pressing the reset button on the back for 10 seconds. Click and save the XML backup securely to your local drive
: Your configuration was likely wiped. Log back into the management page, navigate to the configuration section, and upload the backup file you saved in Step 3. Official firmware for the is generally not available
If you flash generic Huawei firmware, your internet may stop working because the device lost the ISP-specific configuration (VLAN IDs, OMCI settings).
Incomplete downloads or modified files will fail mid-flash, destroying the router's bootloader.