UFI003 Flashing Guide: OpenStick Debian Linux & Docker Setup (1GB RAM)

Because the UFI003 features 1GB of RAM and 8GB of eMMC storage, flashing custom Linux operating systems turns it into a genuinely capable, production-ready micro-server.

Prerequisites

An authentic UFI003 (MSM8916 with 1GB RAM and 8GB eMMC) wingle.
PC with fastboot and adb installed.
Complete backup of modem partitions (modemst1, modemst2, fsg) — see Safety & Backups.
Download the OpenStick release packages (base.zip and debian.zip).

Step 1: Boot into Fastboot Mode

Connect the UFI003 to your computer:

# Verify ADB detection
adb devices

# Reboot to fastboot
adb reboot bootloader

Alternative: If the device is soft-bricked, hold the physical onboard push button while inserting the USB plug into your PC to enter EDL mode, then flash the bootloader via edl.py.

Confirm fastboot detects the board:

fastboot devices

Step 2: Flash the lk2nd Bootloader

lk2nd detects the UFI003 board ID and configures the kernel for 1GB physical RAM address space:

# Flash lk2nd to boot partition
fastboot flash boot lk2nd.img

# Reboot into lk2nd fastboot interface
fastboot reboot

The device will reboot into lk2nd. The blue LED will pulse steadily.

Step 3: Flash Debian Root Filesystem

Once in the lk2nd fastboot interface:

# Flash Debian rootfs into the system partition
fastboot flash rootfs debian-rootfs.img

# Erase old Android userdata partition
fastboot erase userdata

# Reboot into Debian!
fastboot reboot

Step 4: First Boot & SSH Access

Wait roughly 30 seconds for the system to initialize.
The UFI003 will enumerate as a virtual USB network card on your computer.
Connect via SSH to 192.168.68.1:

ssh user@192.168.68.1

Username: user
Password: 1
Root access: sudo su (password 1)

Step 5: Expanding Storage & Verifying 1GB RAM

Verify that your system recognizes the full 1GB of RAM:

free -h
# Output should show: ~980MiB Total RAM!

# Expand filesystem to fill the entire 8GB eMMC storage
sudo resize2fs /dev/mmcblk0p20

# Check available disk space
df -h /
# You will have approximately ~5.5 GB to 6.0 GB of free space!

Step 6: Installing Docker Engine

Because the UFI003 has 1GB of RAM, it runs Docker Engine natively without running out of memory!

# Install Docker prerequisites
sudo apt update
sudo apt install -y ca-certificates curl gnupg lsb-release

# Add Docker's official GPG key and repository
sudo mkdir -p /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo "deb [arch=arm64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# Install Docker Engine and Compose
sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

# Verify Docker is running
sudo docker run --rm hello-world

You can now deploy lightweight Docker containers such as Pi-hole, AdGuard Home, or a Node.js/Go backend directly on your $12 USB stick!

Frequently Asked Questions — UFI003 (1GB RAM)

Why is the UFI003 the best board for OpenStick and Docker?

Genuine UFI003 boards feature 1GB LPDDR3 RAM, 8GB eMMC storage, and an onboard hardware EDL recovery push button, giving you ~860MB of free RAM to run Docker containers, Pi-hole, and Debian services.

👉 Ready to flash? Download the 1-Click OpenStick Debian Installer or browse Verified Store Links.