Find the tool on our support pages.

The Half Decent Updater strives to simplify the firmware updating procedure for your Half Decent Scale.

How to Update Your Half Decent Scale

What You Need

A Google Chrome or Microsoft Edge browser (other browsers won't work)

A USB cable connected between your scale and your computer

Mac users: you may need to install the CH34x USB driver first — without it, your computer won't recognize the scale. Some Windows and Linux machines may also need this driver.

Step 1: Pick a Version

Open the updater page and choose the version you want from the Version dropdown. If a second dropdown called PCB Variant appears, check the label on your scale's circuit board and pick the matching option.

Step 2: Download

Click the Download button. A file will be saved to your computer — remember where it goes (usually your Downloads folder).

Step 3: Load the File

Click Choose File and select the file you just downloaded. A green message will confirm the file was loaded successfully.

Step 4: Connect Your Scale

Click Connect Device. Your browser will show a popup asking you to pick a device — select your scale from the list and click Connect.

NOTE: Older versions of scales will show up as wchusbserial or COMx (where X is a number from 1 to 10) on Windows. Newer versions will show up as Half Decent Scale

You'll know it worked when the device info box appears.

Step 5: Update

Click Flash Firmware and wait. You'll see a progress bar — don't unplug the scale or close the page while it's running.

When the message "Flashing completed successfully!" appears in green, you're done. Your scale will restart on its own with the new software.

Something Not Working?

| What's happening | What to do |

|------------------|------------|

| No device shows up in the popup | Try a different USB cable — some cables only charge and can't transfer data |

| The connection fails | Unplug the USB cable, plug it back in, and try again |

| The button says "Connect" but nothing happens | Make sure no other programs are connected to the scale (close any you're unsure about) |