Hg8245q Firmware Upgrade May 2026

An improper HG8245q firmware upgrade can brick your ONT, requiring a physical SPI flash programmer or a replacement unit. Follow this checklist religiously.

1. Prepare your PC:

2. Launch TFTP server:

3. Connect Telnet/SSH to the ONT:

4. Execute the flash command:

load pack by tftp svrip 192.168.100.10 remotefile HG8245q.bin

Wait for "Software load finished successfully."

5. Reboot:

reboot

The ONT will flash for about 8 minutes. Do not interrupt.

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A successful HG8245Q firmware upgrade isn’t the end. Perform these validations: Hg8245q Firmware Upgrade

If something is broken, roll back using the same process with your previous firmware backup.

There are three primary methods to upgrade the HG8245Q firmware.

Note the Software Version (e.g., V300R016C10SPC135). You cannot downgrade easily, so ensure the new firmware is newer than this.

Which method is available depends on device firmware and ISP locking. An improper HG8245q firmware upgrade can brick your

TFTP/FTP upgrade

ACS/TR-069 remote upgrade

Serial/USB/TTL console (advanced, risky)

A firmware upgrade is low-risk if done correctly, but mistakes can be catastrophic. Serial/USB/TTL console (advanced

The HG8245q runs on a Linux-based OS. Hackers actively scan for vulnerable ONTs using default credentials. Older firmware versions (pre-V300R016C10SPC150) have known backdoor ports (TCP 37215/37216) that allow attackers to extract your PPPoE username and password.