Failing to prepare correctly can result in a "bricked" router, rendering the device completely unusable. Before initiating the update, ensure you meet the following conditions:

Identifying the latest version is difficult because it varies by ISP and region. Many online communities have referenced versions like HG658V2C163b021 and V100R001C163B013 . A forum user confirms HG658V2C163b021 is a firmware version. V100R001C163B013 is a firmware version. Always verify the correct version with your ISP.

If the update failed catastrophically and your router appears dead, you can try a (Trivial File Transfer Protocol).