Ugoos AM9 Pro Firmware Guide: S905X4-J Android Update & Unbrick Fix

The Ugoos AM9 Pro is widely considered the “King” of S905X4 boxes, specifically due to its Amlogic S905X4-J SoC. This variant is premium because it includes hardware licenses for Dolby Vision and Dolby Atmos. Whether you are updating the official firmware or fixing a “soft brick,” this guide is your ultimate resource.

🛑 Before You Start: The Checklist

Flashing firmware is high-risk. Ensure you have the following:

• The Correct Image: Ensure the .img file is specifically for the S905X4-J (AM9 Pro model). Using standard S905X4 files will break Dolby Vision.

• USB OTG Cable: A high-quality USB-A to USB-A (Male-to-Male) cable.

• Host PC: Windows 10 or 11 (Ensure you use a motherboard USB port, not a hub).

• Backup: All data on the TV box will be wiped during the Burning Tool process.

Method 1: Full Reflash via USB Burning Tool (Recommended)

This method is used when you have a .img file. It is the cleanest way to resolve system-level bugs or “stuck on logo” issues.

1. Setup the Software

• Download the official Ugoos firmware image.

• Install the Amlogic USB Burning Tool (v3.2.0 or newer). Older versions may not support the S905X4-J secure bootloader.

• Crucial: During installation, allow the window to install the “WorldCup Device” drivers.

2. Prepare the Tool

• Run the tool. Go to File -> Import Image and select your AM9 Pro .img file.

• Verify Settings: Ensure “Erase Flash” is set to Normal Erase to protect your DRM keys.

• Click the Start button before connecting the device.

3. Connection & Flashing

• Connect the USB-A cable to the OTG Port of your Ugoos AM9 Pro (this is typically the USB 3.0 Blue port).

• The Connection Trick: Use a paperclip to hold the Recovery Button (inside the AV jack) while plugging in the USB cable to the PC.

• Once detected, the progress bar will move. When it says “Result: Burning Successful”, click Stop and disconnect.

Method 2: OTA Zip Update (Local Update)

If you have a .zip OTA package, you can update without a PC.

1. Copy the .zip file to a FAT32/NTFS formatted USB drive.

2. Go to Settings -> Device Preferences -> About -> System Update.

3. Choose Local Update and select your file.

4. The device will reboot. Do not power off until the home screen appears.

🆘 How to Fix a Bricked Ugoos AM9 Pro (Soft Brick)

If your device is stuck on the boot logo or has a black screen, use the Bootcard Maker Solution:

1. Download Amlogic Bootcard Maker.

2. Insert a MicroSD card into your PC and select the stock .img firmware.

3. Click Make.

4. Insert the SD card into the AM9 Pro and hold the Recovery Button while plugging in the power.

5. IMPORTANT: When the progress bar finishes and the box reboots, remove the SD card immediately to avoid a flash loop.

Read more: Download X96 S600 TV Stick Firmware (Android 10): Allwinner H313 Update Guide

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Disclaimer: Flashing firmware and performing an unbrick procedure involves significant risks. If handled incorrectly, it may lead to permanent hardware damage (hard brick). This guide is provided for educational purposes only. TechReviewGuide.com  and its authors are not responsible for any damage to your device, loss of data, or voided warranties. Proceed at your own risk.

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