Android 14 for TV is designed to offer a smoother experience thanks to several major improvements over Android 12.
Performance and efficiency: Android 14 reduces boot time to as little as 4 seconds and optimizes background task management for smoother multitasking.
Power modes: It introduces precise power settings—Low, Optimized, and Increased—to manage standby power consumption (target: less than 2W).
User interface: The user interface now supports native 4K icons and improved Material Design elements for a sharper look.
Accessibility: New system-wide color correction, bold text options, and improved navigation for users with visual or motor impairments.
Multitasking: Expanded Picture-in-Picture (PiP) support for non-media applications, such as smart home camera feeds.
Firmware 590 New Features:
Android 14 OS: Latest system version for future compatibility and enhanced security.
Super Resolution: An upscaling feature accessible via Image -> Clarity that significantly improves lower-resolution content (720p/1080p).
Auto HDR Conversion: Improved handling of SDR content for a more vibrant image.
4K UI Elements: System menus and icons now display in 4K resolution.
Black Bar Fix: On select models, the issue of "gray" bars in Dolby Vision content has been resolved to display true black.
Differences for users:
User interface fluidity: Users report that menu navigation is significantly smoother and more responsive.
Image sharpness: The addition of Super Resolution and "Auto HDR Upscaling" is a major plus for many, as it allows for much sharper, lower-quality content.
HDMI CEC frustration: Much of the discussion concerns users experiencing issues with soundbars and connected devices not turning off when the TV goes into standby mode.
The "Power Off" button: Android 14 changed the default "Restart" function of the power button (long press), causing confusion for users wanting to turn off their TV.
Issues:
HDMI CEC/Standby: The TV fails to turn off connected amplifiers/soundbars; they only mute.
Audio output reset: After the update, the audio is often set to PCM by default, which disrupts Atmos/5.1 playback.
Loss of Dolby Atmos: Some users have completely lost Atmos sound or seen icons disappear in apps like Netflix or Prime.
Excessive bass (C7K): The TV speakers become extremely bass-heavy upon startup.
Screen flicker: Random flickering has been reported, especially when connected to a PC.
Refresh rate limitation: PC users have reported being limited to 60Hz or 144Hz when they previously had a 240Hz refresh rate.
SmartTubeNext issues: The app is not working correctly or has audio crackling.
Prime Video 5.1 issue: After updating, the app only plays stereo sound.
AirPlay issues: Black screen when attempting to use AirPlay.
Local dimming issues: Reports of overexposed areas or washed-out images.
Auto-start apps: The option to disable auto-start apps has been removed.
Installation errors: Some USB 3.0 devices fail to trigger the update.
Random restarts: A few users have experienced stability issues resulting in unexpected shutdowns.
Multiview 2.0 support has been removed.
Solutions:
Audio Correction: Manually switch the audio setting to "Pass-through" or "Auto" to restore Atmos/5.1.
CEC/Power Solution 1: In power-saving mode, the "High" setting keeps the device constantly powered on. Select a different power mode.
CEC/Power Solution 2: Some users recommend performing a factory reset on external devices (such as streaming boxes) rather than the TV.
Error Code 6425: Use the hidden menu (Picture -> Contrast -> 6425) to re-enable the "Off" option.
USB Installation: If the update fails, use a USB 2.0 flash drive and ensure the file is renamed from .jar to .zip.
C7K Bass Fix: Enabling and then disabling any audio frequency setting resets the bass until the next reboot.
PC Screen Flicker: Reinstall the drivers or use the CRU (Custom Resolution Utility) tool to reset the HDMI 2.1 settings.
Warning! High Risk!
***Danger***
To restore the "Power Off" option on your TCL C845x2 after updating to Android 14, you need to access a hidden service menu using code 6425. In Android 14, long-pressing the power button is associated with the "Restart" option by default, but the power off function can be manually re-enabled.
Step-by-Step Instructions
: Change Input: Switch the TV to a live source, such as HDMI or Live TV (the menu may not display correctly on the Google TV home screen).
Access Contrast: * Press the Settings button on your remote.
Go to Picture > Advanced Settings > Brightness.
Select the Contrast slider, but do not click it.
Enter the code: * If your remote does not have physical numeric keys, first press the 123 key (virtual keypad) on your remote.
Enter the code 6425.
Enable Shutdown:
A hidden service menu will appear on the screen.
Look for the option labeled Shutdown Setup (or a similar "Shutdown" setting).
Change the setting to ON.
Exit: Press the Back or Home button to exit the menu.
Once enabled, a long press of the power button on your remote should again allow you to completely turn off the TV rather than just restart it.
[!WARNING] Use with caution: Menu 6425 is a technical service menu. Do not change any settings other than "Shutdown Setup," as incorrect settings in this menu may cause display problems or system instability.
Update Details: New
TCL T653T01 platform, Google TV update available for V590 TV models. ... X11K/ C9K/ C8K/ C7K/ C6K/ P8K/ T8C 98C655/ 85C655Pro/ 98P745/ 98P755 C745X2/ C755/ C765/ C805/ C845X2/ C855 C955/ X955 V8-0012T01-LF1V590.002719 V590 OTA Build Date: November 14, 2025 Security Patch: 05/09/2025 Android 14
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