SKYWORTH 55SUE9520 4K UHD Google TV Software: Fixing Stuck on Logo Forced USB Firmware Flash and Software Update Guide

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If your SKYWORTH 55SUE9520 is stuck loading, looping the Google TV logo, or rendering a green screen across apps, a forced USB update will get it running again.

Here is the exact method to recover the TV using a flash drive.

⚠️ CRITICAL REGION WARNING

Middle East and Sub-Saharan African Models Only: This firmware package is built specifically for the Middle East and Sub Saharan African regional variant of the SKYWORTH 55SUE9520. Installing this software on units built for other markets may cause a total system mismatch or brick the board.

Note on regional travel/relocation: If you take a TV with this Middle East firmware installed into another region, the core Google TV OS and apps will function fine. However, you will not be able to receive local over-the-air (OTA) broadcast channels unless that region uses the exact same broadcast frequency standards.

Supported Regional Countries

Country	Country
Bahrain	Palestine
Cyprus	Qatar
Egypt	Saudi Arabia
Iran	Syrian Arab Republic
Iraq	Turkey
Israel	United Arab Emirates
Jordan	Yemen
Kuwait	Sub-Saharan African
Lebanon
Oman

Sub-Saharan Africa consists of 48 countries, categorized across four main subregions:

Subregion	Countries
East Africa (18)	• Burundi • Comoros • Djibouti • Eritrea • Ethiopia • Kenya • Madagascar • Malawi • Mauritius • Mozambique • Rwanda • Seychelles • Somalia • South Sudan • Tanzania • Uganda • Zambia • Zimbabwe
West Africa (16)	• Benin • Burkina Faso • Cape Verde • Côte d'Ivoire (Ivory Coast) • Gambia • Ghana • Guinea • Guinea-Bissau • Liberia • Mali • Mauritania • Niger • Nigeria • Senegal • Sierra Leone • Togo
Central Africa (9)	• Angola • Cameroon • Central African Republic • Chad • Republic of the Congo • Democratic Republic of the Congo • Equatorial Guinea • Gabon • São Tomé and Príncipe
Southern Africa (5)	• Botswana • Eswatini (Swaziland) • Lesotho • Namibia • South Africa

What This Update Fixes

If your unit shows any of the following symptoms, flashing this package resolves the corrupted system files:

Issue Category	Specific Error / Symptom
Boot & Display System	Stuck on Google TV logo / Logo loop after an OTA update
Boot & Display System	Continuous loading screen on boot
Boot & Display System	No Display / Black screen
Audio System	No Sound output
Audio System	Intermittent sound dropping out
Connectivity	System fails or refuses to connect to Wi-Fi / Internet
Streaming Apps	Green tint/display on YouTube, Netflix, or Prime Video
App Errors	Netflix Error Code ui-800-3(307006)
App Errors	Netflix Error Codes tvq-st-103 and tvq-st-106

Before You Start

• USB Drive: At least 8GB capacity, formatted to FAT32.

• Reliable Power: Do not plug the TV into an unstable strip or loose outlet. Loss of power during a flash ruins the mainboard.

• Firmware Package: Official file: upgrade_image_no_tvcertificatecusdatatvconfig_user_sa_#######.pkg

Step-by-Step USB Flash Procedure

⚠️ Read every step through once before touching the TV. Interrupting this process mid-write will corrupt the system permanently.

1.Format the USB Drive to FAT32:Required.

Insert the USB drive into a PC. Right-click the drive, choose Format, and explicitly select FAT32. The TV bootloader cannot read exFAT or NTFS partitions during a forced hardware boot.

2.Copy Firmware to Drive Root:Exact placement.

Copy the .pkg file directly into the main directory of the USB drive. Do not place it inside subfolders and do not rename the file, or the low-level boot loader will skip it.

3.Execute the Forced Flash sequence:Manual hardware trigger.

1. Unplug the TV's power cable from the wall outlet.

2. Insert the USB drive into the TV's USB 2.0 port (usually black or white, avoid the blue USB 3.0 port).

3. Press and hold the physical Power Button on the TV chassis itself (located under the lower frame or rear panel — do not use the remote control).

1. While holding the panel button down, plug the power cord back into the wall.

2. Keep holding the physical button until the screen shows "Upgrading" or "Software Updating", then let go immediately.

4.Wait for Flashing and Auto-Reboot:5-15 minutes.

Leave the unit alone while the progress bar runs. Do not turn off the power or pull the USB drive. Once finished, the system will restart into the Google TV initial setup screen automatically.