Updating the firmware on your FiberHome HG6243C is an important step for security and performance, but it requires careful attention.
The file is likely corrupted or intended for a different hardware revision. Check if the file is compressed (e.g., zipped) and extract the .bin file before uploading.
FiberHome added to many 2021 units. If you see an error like "Integrity check failed" or "Invalid image" :