HG8245H 256M: How to Boost Wi-Fi Speed ​​to the Max – Proven Methods 2026

Router Huawei HG8245H 256M — a popular device from providers, but its factory settings rarely unlock the full potential of Wi-Fi. If your internet is slow, 4K video is constantly buffering, and online games are lagging, the problem isn't always your plan. More often than not, the speed drop is due to incorrectly selected channel, a congested 2.4 GHz network, or outdated settings in the control panel.

In this article - 10 Practical Ways speed up Wi-Fi on HG8245H 256M, from basic (channel change) to advanced (manual MTU configuration and disabling unnecessary features). We'll look at how bypass provider restrictionsIf it's blocked some settings, and what to do if the speed isn't improving even after all these steps. All instructions have been tested on the latest firmware versions from 2026.

1. Checking the current speed: where are the roots coming from?

Before you change anything, you need to understand, where exactly is the speed lost?Connect your laptop or smartphone to the router via cable (LAN) and run the test speedtest.net or nperf.comThen repeat the Wi-Fi test in the same room. The difference will show how much the wireless network is sagging.

Typical results for HG8245H 256M:

• 🔌 By cable: 90-100% of the provider's tariff (for example, 280 Mbit/s with a tariff of 300 Mbit/s).
• 📶 Via Wi-Fi 5 GHz: 50-70% of cable connection (150-200 Mbps).
• 📡 Via Wi-Fi 2.4 GHz: 20-40% (60-120 Mbps), especially if there are many other networks nearby.

If the difference between cable and Wi-Fi exceeds 50%, the problem is definitely with your router settings. If the speed is still low over cable, call your provider or check MTU (more on this in section 5).

2. Optimizing your Wi-Fi channel: how to avoid interference

The most common reason for slow Wi-Fi is congested channelsIn apartment buildings, up to 20 routers can be simultaneously connected to channel 6 (2.4 GHz) or 36 (5 GHz). The result is constant disconnections and low speeds.

To find a free channel:

1. Install the application on your smartphone WiFi Analyzer (Android) or NetSpot (iOS/Windows).
2. Run a network scan. The app will show which channels are busy.
3. For 2.4 GHz choose channels 1, 6 or 11 - they do not intersect. For 5 GHz - any channel with minimal load (for example, 149 or 161).

Now change the channel in the router settings:

1. Open the control panel at 192.168.100.1 (login and password are usually admin/admin or data from the sticker on the router).
2. Go to Basic → WLAN → WLAN Basic Configuration.
3. In the section Channel select manual mode (Manual) and specify a free channel.
4. Save settings (Apply) and reboot the router.

3. Separating 2.4 GHz and 5 GHz Networks: Why It Matters

Many users don't know that HG8245H 256M supports two networks at the same time: 2.4 GHz (long range, but low speed) and 5 GHz (high speed, but weak signal through walls). By default, the router can combine them into one network with the same name (SSID), causing devices to automatically connect to the congested 2.4 GHz frequency.

How to split networks:

1. Go to Basic → WLAN → WLAN Basic Configuration.
2. Find the option SSID Name (5G) and give the 5 GHz network a unique name (eg. MyWiFi_5G).
3. Make sure the checkbox is checked Enable SSID costs for both networks.
4. Save your settings and connect your devices to the 5 GHz network manually (especially those where speed is important: TVs, game consoles, laptops).

After splitting, check the speed on each device. The difference can be as much as 3-5 times in favor of 5 GHz. If the 5 GHz signal is weak in some rooms, consider purchasing repeater or Mesh systems.

What should I do if there is no 5GHz option in the settings?

If there is no section for 5 GHz settings in the Control Panel, this may mean:

1. Your router is a modification without 5 GHz support (check the sticker on the case: there should be an inscription Dual-Band or 802.11ac).

2. The provider has disabled 5 GHz via software (sometimes this is done to save resources). In this case, only flashing alternative firmware will help (see Section 7).

4. QoS settings: priority for important devices

Quality of Service (QoS) — a feature that allows you to prioritize traffic distribution between devices. For example, you can give your Smart TV maximum speed while watching a movie, while limiting background updates on your smartphone. HG8245H 256M QoS is often disabled by default.

How to set up QoS:

1. Go to Advanced → QoS → QoS Configuration.
2. Enable QoS (Enable QoS).
3. Select the restriction type:
   • 📊 By Bandwidth — manual speed distribution (for example, 70% for TV, 20% for PC, 10% for phones).
   • 🎯 By Application — priority by traffic types (for example, videos and games are higher than downloads).

Add devices to the priority list based on their MAC address (you can find it in the network settings on your device).

If after setting up QoS the speed on priority devices has not increased, check whether this function conflicts with other settings (for example, with Band Steering, if it is enabled).

5. Changing MTU and DNS: Hidden Network Slowdowns

MTU (Maximum Transmission Unit) — the maximum data packet size that can be transmitted without fragmentation. If the MTU value is too high or too low, packets are cut into pieces, which increases the load on the router and reduces speed. The optimal value for most providers is 1472 or 1480.

How to change MTU on HG8245H 256M:

1. Open Advanced → LAN → LAN Configuration.
2. Find the field MTU Size and set the value 1472.
3. Save the settings and reboot the router.

Also check DNS serversBy default, the router uses the provider's DNS, which may be overloaded. Replace them with public ones:

• 🌍 Cloudflare: 1.1.1.1 And 1.0.0.1
• 🌐 Google DNS: 8.8.8.8 And 8.8.4.4
• 🔒 AdGuard (with ad blocker): 94.140.14.14 And 94.140.15.15

To change DNS:

1. Go to Advanced → DNS → DNS Configuration.
2. Mark Use the following DNS server addresses.
3. Enter the addresses of the selected DNS servers.

ping -f -l 1472 ya.ru

If packets are fragmented, reduce the number 1472 until you receive a response without fragmentation.-->

6. Firmware update: risks and opportunities

A router's firmware is its "operating system." An outdated version may contain bugs, limit speed, or not support modern standards (for example, 802.11ac Wave 2). However, updating the firmware on HG8245H 256M It's not that simple: providers often block this option.

Official method (if allowed):

1. Download the latest firmware from the Huawei website (support section for HG8245H).
2. Go to System Tools → Firmware Upgrade.
3. Download the firmware file and wait for it to complete (do not turn off the power!).

If the update is blocked, there are two options:

• 📞 Contact your provider's support team and request a remote firmware update.
• 🔧 Install alternative firmware (for example, OpenWRT), but this risky - you can turn the router into a "brick".

Download the firmware from the official Huawei website

Connect the router to a UPS (to avoid power outages)

Make a backup copy of your current settings (System Tools → Configuration File → Backup)

Disconnect all devices from Wi-Fi except one (for stability)

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⚠️ Attention: Unofficial firmware may void your warranty and cause your router to malfunction. If you're unsure of your skills, it's best to consult a professional.

7. Disabling unnecessary features: what slows down the router?

HG8245H 256M has many built-in functions that are rarely used but consume processor and memory resources. Disabling them can free up 20-30% of power, which will have a positive effect on Wi-Fi speed.

What features can be disabled:

• 🔄 IPv6 (if your provider doesn't support it) - Advanced → IPv6 → Disable.
• 📡 WPS (unsafe fast connection technology) - Basic → WLAN → WPS → Disable.
• 📊 TR-069 (remote control of the provider) - Advanced → TR-069 → Disable (if not required for the tariff).
• 🔌 Remote access — System Tools → Remote Management → Disable.
• 📡 Guest network (if not used) - Basic → WLAN → Guest Network → Disable.

Also check the list of connected devices (Basic → WLAN → Station Info). If there are any unknown gadgets there, they could be "freeloading neighbors" or bots. Block them by MAC address in the section Advanced → Security → MAC Filter.

8. Hardware solutions: when software methods don’t help

If after all the settings the Wi-Fi speed remains low, the problem may be in hardware limitations router. HG8245H 256M — a budget device with a weak processor and limited memory. In this case, the following will help:

• 📶 Replacing antennas to more powerful ones (with a gain of 5-7 dBi). Antennas with a connector are suitable RP-SMA.
• 🔄 Adding a repeater (For example, TP-Link RE605X) to enhance the signal in remote rooms.
• 💻 Switching to a wired connection for stationary devices (PC, TV) via Powerline adapters (Internet transmission via electrical wiring).
• 🔧 Replacing the router to a more powerful model (for example, Huawei AX3 or ASUS RT-AX55), if the budget allows.

If you decide to change your router, pay attention to models that support Wi-Fi 6 (802.11ax) And OFDMA - They cope better with a large number of connected devices.

⚠️ Attention: When replacing antennas, do not exceed 7 dBi power without your provider's permission. In some countries, this may violate radio frequency regulations.

FAQ: Frequently asked questions about boosting Wi-Fi on the HG8245H 256M

❓ Why didn't the speed increase after changing the channel?

Possible reasons:

• The channel is still overloaded (check again in WiFi Analyzer).
• The device is connected to a 2.4 GHz network instead of 5 GHz.
• The router is in the enabled mode Auto for channel width - set a fixed value (eg 40 MHz for 5 GHz).

❓ Is it possible to increase Wi-Fi transmission power?

On HG8245H 256M transmit power (Tx Power) is usually fixed. However, in some firmware versions it can be changed in the section Advanced → WLAN → Tx Power. Do not set the value higher 100% - this may lead to overheating of the router.

❓ Why is Wi-Fi speed higher than cable?

This is unlikely, but possible if:

• The cable is damaged or of poor quality (use Cat 5e or higher).
• The speed of LAN ports is limited in the router settings (check Advanced → LAN → Port Rate Limit).
• The cable speed test was performed on a device with a slow network card (for example, an old PC with 100 Mbps port).

❓ How do I reset my router to factory settings?

Press and hold the button Reset (on the back panel) for 10-15 seconds until the indicators start flashing. After the reset, the router will return to its default settings, and you'll need to configure it again.

❓ Should I disable 2.4 GHz if I have 5 GHz?

Not recommended. Some devices (smart bulbs, sensors, older smartphones) only operate on 2.4 GHz. It's best to separate networks and only disable 2.4 GHz at night when not in use.