It sounds like you’re referring to a specific review or feedback about the W-King D9 (likely a portable Bluetooth speaker) and its firmware update process . Since I don’t have access to your exact review link, here’s a helpful breakdown of what makes a firmware update for the W-King D9 “interesting” — both positive and negative points often mentioned in user experiences: Common “interesting” observations users report:
Unexpected improvements – Some reviews note that after updating, the bass response became tighter or the maximum volume increased slightly (or sometimes decreased, which surprises people). Bug fixes – The update might resolve pairing issues, battery level reporting errors, or aux input static. EQ changes – W-King has been known to tweak the digital signal processing (DSP), which noticeably changes the sound signature (e.g., less mid-bass bloat, clearer highs). Installation process – The update often requires a Windows PC and a USB cable (not over-the-air). People find this interesting because it’s old-school and can be finicky — driver issues, holding specific buttons, etc. Risk of bricking – A few reviews mention the speaker becoming unresponsive if the update fails mid-way, which makes the process “interesting” in a tense way.
If you saw a specific review calling it “interesting,” they likely meant:
The update was not clearly documented by W-King. It unexpectedly changed the sound (not just bug fixes). It solved a problem they lived with for months, making the speaker feel “new again.” w-king d9 firmware update
To help you better: Could you share a quote or link from that review? Then I can explain exactly what the reviewer found notable — good or bad. In the meantime, if you’re thinking of updating your own W-King D9:
Only update if you’re experiencing a listed issue (e.g., TWS glitch, battery % stuck). Follow the manufacturer’s PDF guide exactly . Use a known-good USB data cable, not just a charging cable.
To update the firmware of your Go to product viewer dialog for this item. Bluetooth speaker, you can use the official W-KING App or a manual PC-based method if the app does not support your specific hardware version . Method 1: Using the W-KING App (Recommended) The official app allows for wireless firmware upgrades and EQ adjustments. Download the App : Install the W-KING App from the Google Play Store or Apple App Store . Connect Your Speaker : Turn on your and pair it with your smartphone via Bluetooth. Check for Updates : Open the app; it should automatically detect the speaker and notify you if a firmware update is available. Install : Follow the on-screen prompts to download and install the update. Method 2: Manual Update via PC If the app is incompatible with your device, you may need to perform a manual update using a computer. Download Firmware : Obtain the correct firmware file and update tool from W-KING Support or contact their support team at support@w-king.com to ensure you have the correct version for your serial number. Enter Update Mode : Connect the speaker to your PC using a high-quality USB cable. Press and hold the Play button for about 3 seconds. While still holding Play , press the Power button. Continue holding both for roughly 10 seconds until the PC recognizes the device in "DFU mode". Run the Tool : Use the firmware application on your PC to load the new firmware file. This typically takes about 5–10 seconds. Reset : Once complete, release the buttons and unplug the speaker. You may need to "forget" the device in your phone's Bluetooth settings and re-pair it. Important Precautions Battery Level : Ensure your speaker has at least 50% battery before starting to avoid "bricking" the device during the process. Version Check : Newer units (often labeled as D9-1 ) may already have the latest firmware pre-installed and might not require an update. TWS Pairing : Note that after an update, you can only pair via TWS with another speaker that has the same firmware version. W-KING D9 60W Portable Bluetooth Speaker with Deep Bass It sounds like you’re referring to a specific
(and the updated ), firmware updates are typically used to improve clarity, bass response at low volumes, and system stability. How to Update Your W-KING D9 W-KING does not provide a public "one-click" update portal. Instead, follow these steps based on recent user experiences and official support channels:
Here’s a helpful post for someone looking to update the W-King D9 portable Bluetooth speaker firmware.
Post Title: W-King D9 Firmware Update – What You Need to Know If you’re looking for a firmware update for the W-King D9 , here’s the honest reality based on current information: There is no public, user-installable firmware update available for the standard W-King D9. W-King does not provide downloadable firmware files or update tools on their official site for the D9 model. Unlike some modern electronics, the D9’s firmware is factory-installed and not meant for end-user updates. What you can actually do: EQ changes – W-King has been known to
Check for a newer hardware revision – Some users have reported that newer D9 units (shipped after 2022) came with slightly improved Bluetooth chip firmware (better pairing stability). This is hardware-locked – you can’t “update” an older unit to get it.
Reset the speaker – If you’re having issues (pairing problems, volume weirdness, EQ not working), try: