Cubi B21 Quick Start Hub

Cubi B21 Quick Start Hub

Downloads

Grab the product manual, app, and other nifty tools from Inkwon here!

Inkwon Aiyin App
iOS Version
Download from Apple Store
Inkwon Aiyin App
Android Version
Download from Google Play
Inkwon Desktop Driver
For Mac
Download
Inkwon Desktop Driver
For Windows
Download
Cubi B21 Product Manual
Get quick start of the product
Download

📱 How to connect & print by App?

FAQ

Find the most frequently asked questions below.
  • Check label installation. In the app, use “Calibration” to adjust sensor alignment.

  • Remove and reinstall the 55mm label correctly. Adjust the sensor if alignment is off.

  • If the QR code is smudged or the paper is creased, the app may not be able to recognize it properly. Please ensure the QR code paper is flat and clean before scanning again.

    1. Make sure Bluetooth and location permissions on your phone are enabled.
    2. Ensure the printer is not already connected to another device.
    3. Restart the printer, app, and phone, then try reconnecting.
    4. If the issue persists, contact customer service.
  • Check if the thermal paper is loaded in the wrong direction. Please reinstall it according to the manual.

    1. Make sure you are using the recommended official paper.
    2. Confirm the battery is sufficiently charged (a red slow flash indicates low battery).
    3. Clean the print head with alcohol while the device is turned off.
    4. Increase the print density if necessary.
    5. If problems persist, contact customer service.
  • Green light: Normal

    Red light: Out of paper / charging / cover open / overheating

    Red slow flash: Low battery

    1. Via feedback in the app
    2. Hotline: 400-999-0221 (China)
    3. Email: support@iprt.com.cn