Your ISP has locked the administration panel. You must use the ONT Maintenance Tool (Method B) to bypass the lock and flash the firmware.
Reboot your router at least once a month to clear cache.
Disclaimer: Firmware upgrades are performed at your own risk. Incorrect updates can make the ONT inoperable. Huawei EchoLife HG8245W5 Support Guide, Manuals & PDF huawei hg8245w5 firmware upgrade
This occurs if the firmware file is corrupted or belongs to a different hardware model. Double-check that you did not accidentally download firmware for the older HG8245H or HG8245Q2 models. If the file is inside a .zip or .rar archive, extract the raw binary file before uploading. The ONT Power Light is Solid Red
The power LED flashed. Then the PON light blinked slowly. Then… the internet LED turned green. Your ISP has locked the administration panel
After the reboot (wait 3 minutes for the lights to stabilize), log back in. Go to Status > Device Information .
Open a web browser (such as Chrome, Edge, or Firefox) on your connected computer. Disclaimer: Firmware upgrades are performed at your own risk
HG8245W5 devices are customized by ISPs. Firmware upgrades are generally pushed automatically via TR-069 protocol.
Most enterprise-grade Huawei devices require manual installation via the integrated web gateway. Step 1: Log Into the Admin Gateway
Select and upload the backup file you created before starting.