### Run Post-Installation Script

Source: https://github.com/sicxnull/onn4k-tv-box-armbian/blob/main/README.md

Execute the post-build script to copy required files to the boot partition.

```bash
$ cd ..
$ sudo ./postscript.sh
```

--------------------------------

### Execute Boot Command

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

This command is used to initiate the boot process.

```bash
run bootcmd
```

--------------------------------

### Onn 4K TV-Box Armbian First Boot Procedure

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

Follow these steps to boot the Onn 4K TV-Box from a USB drive for the first time. Ensure all hardware requirements are met before proceeding.

```bash
# Hardware requirements:
# - OTG Cable (required for USB boot)
# - USB Hub (recommended for keyboard/mouse)
# - USB to Ethernet adapter (recommended for network setup)

# First boot procedure:
# 1. Insert USB drive with Armbian image into OTG cable
# 2. Connect OTG cable to Onn 4K TV-Box USB port
# 3. Hold the reset button (pinhole on device)
# 4. While holding reset, plug in power cable
# 5. Release reset button after 3-5 seconds
# 6. Device will boot from USB into Armbian

# Subsequent boots:
# Simply power on with USB drive connected - no reset button needed
```

--------------------------------

### Build Armbian Image with MATE Desktop (Ubuntu Jammy)

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

Compile a full desktop Armbian image for the Onn 4K TV-Box using Ubuntu Jammy and the MATE desktop environment. Ensure you are in the 'armbian-build' directory.

```bash
cd armbian-build

./compile.sh build \
    BOARD=onn4k \
    BRANCH=current \
    BUILD_DESKTOP=yes \
    BUILD_MINIMAL=no \
    DESKTOP_ENVIRONMENT=mate \
    DESKTOP_ENVIRONMENT_CONFIG_NAME=config_base \
    EXPERT=yes \
    KERNEL_CONFIGURE=no \
    KERNEL_GIT=shallow \
    RELEASE=jammy
```

--------------------------------

### Run Post-Build Script to Prepare Boot Partition

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

Execute the postscript.sh to copy necessary boot files (U-Boot, autoscript) into the generated Armbian image's boot partition. This script requires root privileges.

```bash
cd ..

sudo ./postscript.sh
```

--------------------------------

### Build Armbian Image with MATE Desktop (Debian Bookworm)

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

Compile a full desktop Armbian image for the Onn 4K TV-Box using Debian Bookworm and the MATE desktop environment. Ensure you are in the 'armbian-build' directory.

```bash
cd armbian-build

./compile.sh build \
    BOARD=onn4k \
    BRANCH=current \
    BUILD_DESKTOP=yes \
    BUILD_MINIMAL=no \
    DESKTOP_APPGROUPS_SELECTED= \
    DESKTOP_ENVIRONMENT=mate \
    DESKTOP_ENVIRONMENT_CONFIG_NAME=config_base \
    EXPERT=yes \
    KERNEL_CONFIGURE=no \
    KERNEL_GIT=shallow \
    RELEASE=bookworm
```

--------------------------------

### Compile Armbian Image

Source: https://github.com/sicxnull/onn4k-tv-box-armbian/blob/main/README.md

Execute the build script with specific board and environment configurations.

```bash
$ cd armbian-build
$ ./compile.sh build BOARD=onn4k BRANCH=current BUILD_DESKTOP=yes BUILD_MINIMAL=no DESKTOP_APPGROUPS_SELECTED= DESKTOP_ENVIRONMENT=mate DESKTOP_ENVIRONMENT_CONFIG_NAME=config_base EXPERT=yes KERNEL_CONFIGURE=no KERNEL_GIT=shallow RELEASE=bookworm
```

--------------------------------

### Clone and Patch Armbian Build

Source: https://github.com/sicxnull/onn4k-tv-box-armbian/blob/main/README.md

Download the Armbian build repository and apply the necessary patches for the Onn 4K TV-Box.

```bash
$ git clone --depth=1 https://github.com/armbian/build armbian-build
$ cp -R armbian-patch/* armbian-build/
```

--------------------------------

### U-Boot Autoscript Configuration for Amlogic

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

This script configures the Amlogic U-Boot to boot from USB and load the custom U-Boot binary. It resets the environment, sets the boot command, and saves the changes.

```bash
# File: boot/aml_autoscript.cmd
# Recompile with:
# mkimage -C none -A arm -T script -d /boot/aml_autoscript.cmd /boot/aml_autoscript

# Reset environment to defaults
defenv

# Set boot command to load U-Boot from USB
setenv bootcmd "usb start && if fatload usb 0:1 0x1000000 u-boot/onn-uhd.uboot; then go 0x1000000; else run storeboot; fi"

# Save environment changes
saveenv
```

--------------------------------

### Armbian Board Configuration for Onn 4K TV-Box

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

This file defines hardware-specific settings for the Onn 4K TV-Box within the Armbian build system, including SoC family, maintainer, U-Boot configuration, and kernel branches.

```bash
# File: armbian-patch/config/boards/onn4k.tvb
# Board configuration for Onn 4K TV-Box

BOARD_NAME="Onn4k TV Box"           # Display name for the board
BOARDFAMILY="meson-g12a"            # Amlogic G12A SoC family
BOARD_MAINTAINER="sicXnull"         # Board maintainer
BOOTCONFIG="onn-uhd_defconfig"      # U-Boot configuration file
BOOT_FDT_FILE="amlogic/meson-g12a-onn-uhd.dtb"  # Device tree blob
KERNEL_TARGET="current,edge"        # Supported kernel branches
MODULES_BLACKLIST="simpledrm"       # SimpleDRM conflicts with Panfrost GPU
FULL_DESKTOP="yes"                  # Enable full desktop support
BOOT_LOGO="desktop"                 # Boot logo type
BOOTBRANCH_BOARD="tag:v2023.07.02"  # U-Boot version tag
BOOTPATCHDIR="v2023.07.02"          # U-Boot patch directory
BOOT_SCENARIO="spl-blobs"           # Boot scenario using SPL blobs
BOOTFS_TYPE="fat"                   # Boot filesystem type
```

--------------------------------

### Write Image to USB

Source: https://github.com/sicxnull/onn4k-tv-box-armbian/blob/main/README.md

Flash the generated image to a USB drive using the dd command. Ensure the device path and filename are correct for your environment.

```bash
cd armbian-build/output/images
sudo dd if=Armbian-unofficial_24.11.0-trunk_Onn4k_bookworm_current_6.6.48_mate_desktop.img of=/dev/sdb bs=4M status=progress
```

--------------------------------

### Write Armbian Image to USB Drive

Source: https://context7.com/sicxnull/onn4k-tv-box-armbian/llms.txt

Use the 'dd' command to write the compiled Armbian image to a USB drive. Ensure you replace '/dev/sdb' with the correct device path for your USB drive to prevent data loss. The 'sync' command ensures all data is written.

```bash
cd armbian-build/output/images

ls -la Armbian-unofficial_*.img

sudo dd if=Armbian-unofficial_24.11.0-trunk_Onn4k_bookworm_current_6.6.48_mate_desktop.img \
    of=/dev/sdb \
    bs=4M \
    status=progress

sync
```

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