| Tool | Purpose | |------|---------| | | Do not update over Wi-Fi; one interruption bricks the ONT | | TFTP Server Software | Free tools like TFTPD32 or SolarWinds TFTP | | PuTTY / Terminal | For serial TTL or Telnet access (if web fails) | | Uninterruptible Power Supply (UPS) | A power outage during flashing = permanent brick | | Original Backup Firmware | Find the original .bin from a friend or online |

However, like any complex piece of networking hardware, the HG8321R can suffer from bugs, security vulnerabilities, or performance degradation over time. This leads thousands of users to search for one specific phrase every month:

Or for some versions: http://192.168.100.1/firmwareupdate.html