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CumeBox 2

Hardware Overview

CumeBox 2 (also known as Bitmi Box) uses an Amlogic S905X processor with 1 GB RAM and 8 GB internal storage. It has a 100 Mbps Ethernet port, two USB 2.0 ports, one OTG 2.0 port, two SATA 3.0 ports, dual-band Wi-Fi and Bluetooth, a TF card slot, and HDMI output.

Integrated Image Deployment

The base image is built from Armbian Khadas-vim1 with DTB modifications. Ethernet, OLED, Wi-Fi, and OTG are all supported.

Flashing preparation and steps

  1. Download firmware: Get the Android TV 6.0 firmware. It is used as an intermediate system for flashing other OS images.
  2. Short board pads: Refer to the image and short the pads to enter flashing mode.
  3. Use the flashing tool: Use Amlogic USB Burning Tool to flash the Android TV firmware.
  4. Install APK: After booting into Android TV, install the APK that enables booting from external media (USB/TF) into Armbian.
  5. Switch to Armbian: After reboot, the device should boot into the prepared Armbian system.
  6. Write the final image: Use dd to write the integrated image to eMMC.

Short pads

Detailed flashing guide: CumeBox 2/Bitmi Box Armbian flashing tutorial // Miao

Upgrade method

Write the latest dd image to a USB drive, plug it in, and boot. To write it to eMMC, use dd to flash it from the USB environment.

Docker Deployment

Install Docker

  • Install via package manager: 
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    apt install apparmor-utils docker.io -y
  • Or install the latest version: 
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    curl -fsSL https://get.docker.com | bash

Deploy the One-KVM container 

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# Run the docker container using OTG HID
# /dev/video0 already exists, so new USB capture cards start at /dev/video1
docker run --name kvmd -itd --privileged=true \
    -v /dev:/dev -v /sys/kernel/config:/sys/kernel/config \
    -v /lib/modules:/lib/modules:ro \
    -e OTG=1 -e VIDEONUM=1 \
    -p 8080:8080 -p 4430:4430 -p 5900:5900 -p 623:623 \
    silentwind0/kvmd

# After confirming the container runs, enable auto-restart
docker logs kvmd
docker update --restart=always kvmd

image-20240926220902937

Usage Notes

Hardware safety warning

To avoid potential risks (e.g., the target device failing to boot or recognize devices, and in rare cases hardware damage), we strongly recommend one of the following safety measures before using a USB male-to-male cable:

Option 1: Cut or remove the red 5V power wire (VCC) in the USB cable, leaving only data (D+/D-) and ground (GND) to prevent back-powering.

Option 2: Insert a USB hub with an independent power switch in the link, and keep the hub powered off when connecting.

Some low-power devices may draw power back through the USB OTG port when their main power is off, causing an abnormal state that may prevent boot even after main power is restored.

Unless you fully understand the risks, use one of the above protections to keep devices safe.

Data safety

Avoid hard power-offs. Sudden power loss during eMMC writes can cause data loss.

If you must cut power, run sync after write operations to flush data. For shutdown or reboot, use poweroff or reboot so the system can sync and shut down cleanly.

SSH remote login

SSH is enabled by default on Armbian. The initial credentials are root/1234.

Warning

Do not use apt upgrade to upgrade the kernel and device tree; this may break the system and OTG functionality.

Hardware connections

image-20240926220219805

OLED display

The front panel OLED cycles through a welcome message, temperature, and IP address.

oled

Wi-Fi connection

  • Install the package 

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    apt install network-manager -y

  • Connect to Wi-Fi 

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    # Connect via terminal UI; dual-band Wi-Fi supported
# After the first connection, it will auto-connect on reboot
nmtui

image-20240926220204960

ATX power control

CumeBox 2 can use a USB HID relay to control physical power on/off.

img