For 95% of HG8145V users, a manual firmware download is unnecessary. If you want better performance:
Only download firmware if you have a specific, documented issue that the new version solves (e.g., a VoIP echo bug listed in release notes).
Instead of searching for an unofficial firmware, consider these safer and more effective approaches: huawei hg8145v firmware download better
Sometimes, the "better" firmware is already inside your router—just locked. You can unlock advanced features without a full flash using ONT Upgrade commands.
Once you have the correct file:
Yes, but only if you are methodical. The HG8145V is a powerful chipset (Dual-core ARM at 1.2 GHz) that is deliberately throttled by bad software. A better firmware turns this ISP-provided plastic box into a capable home gateway.
However, if you are not comfortable with the risks, there is an alternative: Convert the HG8145V into pure bridge mode and use a dedicated router (like an Asus or MikroTik) behind it. This sidesteps firmware issues entirely, letting the Huawei only handle the GPON signal. For 95% of HG8145V users, a manual firmware
If the technical complexity worries you, pay a specialist on Fiverr or Upwork (search "Huawei ONT firmware upgrade").