How to enable Dynamic Black Level Enhancement?
1. Press the Settings button on the remote control to open the quick settings menu.
2. Select “Display”, then scroll down to “Advanced Settings” and enter it.
3. Scroll down to “Dynamic Black Level Enhancement” and toggle it on or off according to your viewing preference.
Notes:
**When “Dynamic Black Level Enhancement” is enabled, pressing the Settings button to open the quick settings menu may cause a change in color. This happens because the video and system setting interfaces display different types of content. To ensure optimal display, Dynamic Black Level Enhancement is temporarily disabled in the quick settings menu.
My HORIZON 20 Series projector has already updated the system, so why can’t I still use the DBLE feature?
If the DLP firmware on the HORIZON 20 Series has not been updated, the DBLE (Dynamic Black Level Enhancement) feature will have certain limitations. For example, DBLE cannot be enabled in Dolby Vision mode, and the DBLE optimizations introduced in V1.2.106 and V1.3.125 will not be available.
If you need to upgrade the DLP firmware to fully use the DBLE feature, you can follow the steps below to update the projector’s DLP firmware.
Why can’t DBLE be enabled in Dolby Vision mode?
If DBLE cannot be enabled in Dolby Vision mode, it indicates that the projector’s DLP firmware is not the updated version. You can follow the steps below to update the projector’s DLP firmware.
Why can’t I adjust the color space after enabling DBLE?
This issue is likely caused by the system version not being updated. In the V1.3.125 system update, we adjusted the projector’s feature logic to support switching the projector’s color space while the Dynamic Black Level Enhancement (DBLE) feature is enabled.
You can update the projector’s system by going to: “All Settings” → “System” → “About” → “System Update” → “Check for update.”
However, to achieve the best experience with the Dynamic Black Level Enhancement (DBLE) feature, it is recommended to ensure that the projector’s DLP firmware is the updated version before upgrading to V1.3.125.
When the projector’s system version is V1.2.106, you can determine whether the DLP firmware is the updated version by checking if DBLE can be enabled in Dolby Vision mode.
If DBLE cannot be enabled in Dolby Vision mode, it means the projector’s DLP firmware is not the updated version. In this case, you can follow the steps below to update the projector’s DLP firmware.
After completing the DLP firmware upgrade, you can then proceed to update the projector’s system version.
Why does the image appear slightly reddish after enabling DBLE?
After updating the DLP firmware, the earlier issue where the image appeared bluish or purplish when DBLE was enabled can be significantly improved.
For some users who have reported a pinkish tone or color temperature shift when DBLE is enabled, our team is actively working on this issue. We are currently collaborating with TI (Texas Instruments) to research a solution that can better control color temperature stability in relevant scenarios.
Why does the brightness automatically change to 10 after enabling DBLE, and lowering the brightness disables DBLE?
Fixed Brightness with DBLE Enabled: DBLE (Dynamic Black Level Enhancement) is a specialized image processing technology designed to maximize contrast and black detail by dynamically optimizing the picture. In this dedicated "pro-mode," certain parameters like brightness are locked to ensure the algorithm delivers a stable visual output. Therefore, due to algorithmic limitations, the brightness cannot be adjusted.
Why Is It Necessary to Update the DLP Firmware?
When the projector’s DLP firmware is updated, it can optimize the DBLE (Dynamic Black Level Enhancement) display performance and effectively improve the early issue where the image appeared bluish or purplish after enabling DBLE.
- When the projector is upgraded to V1.2.106 and the DLP firmware is the updated version, DBLE can also be enabled in Dolby Vision mode.
- When the projector is upgraded to V1.3.125 and the DLP firmware is the updated version, it supports switching the projector’s color space while DBLE is enabled, and also optimizes the interaction between Dolby Vision / IMAX content and DBLE mode.
How to Check Whether the Projector’s DLP Firmware Has Been Updated
Since the DLP firmware update mainly improves the DBLE experience, you can determine whether the projector has the updated DLP firmware by checking whether DBLE can be enabled in Dolby Vision mode.
- If DBLE cannot be enabled in Dolby Vision mode, it means the projector is not running the updated DLP firmware.
- In this case, you can follow the steps below to update the projector’s DLP firmware.
How do I update the DLP firmware of my projector?
DLP Firmware Update Operation Procedure
a. Power on the projector. Navigate to Settings--> System --> About --> Software Version to confirm the system version is 1.2.106. (An incorrect version will cause the update to fail.)
If the projector's system version has been upgraded to V1.3.125, then first downgrade the system version back to V1.2.106. For specific steps, please refer to the next section.
b. Prepare a USB flash drive, formatted as FAT32. Download the DLP firmware update file from the following link:
- HORIZON 20 - V5.4.4：https://drive.google.com/file/d/1AlnqI99b3g5zVgyadJPT9wEeq3sbgmny/view?usp=sharing. The downloaded file is named "OpticalEngineImg_5.4.4.zip".
- HORIZON 20 Pro - V5.4.83：https://drive.google.com/file/d/1AnYa4yZ1fNw0fhJHf611pu1dmBWpJqqp/view?usp=sharing. The downloaded file is named "OpticalEngineImg_V5.4.83.zip".
- HORIZON 20 MAX - V5.4.164：https://drive.google.com/file/d/1Sr8zZn_BE4xFgm3ESbzGl8NdeBawx0e_/view?usp=sharing. The downloaded file is named "OpticalEngineImg_VV5.4.164.zip".
c. Place the zip file directly in the root directory of the USB flash drive (The root directory is the first folder you see when opening the drive.) Do not place it inside any folders. Please note: do not unzip or extract the file; simply copy the downloaded file as-is.
Similar to the image below：
d. Insert the USB drive into the projector's USB 3.0 port (noted by its blue color)
e. Wait for the update pop-up window to appear. Read the update instructions.
f. Select "Confirm" to start the update. The fans will run at full speed, and the noise will increase. This is normal.
g. Wait for the light engine to update. This process will take approximately 15 to 30 minutes. During this time, a black screen, the fan running at high speed, and a solid power indicator light are normal phenomena.
h. The projector will automatically restart, the screen will light up, and it will enter the desktop home screen, indicating a successful update.
How do I downgrade my projector's system firmware version back to V1.2.106?
1. Power off the projector and unplug it from the power source.
2. Download the firmware. Rename the file to “upgrade_image.pkg” and place it in the root directory of a USB drive.
- The USB drive must be formatted as FAT32.
- If the file is already named “upgrade_image.pkg”, no renaming is necessary.
Depending on your device model, click the corresponding link to download the V1.2.106 system firmware:
Similar to the image below：
3. Insert the USB drive into the projector’s USB 3.0 port (the blue port).
4. Plug in the power. After 6–7 seconds, the projector will automatically power on and enter the firmware upgrade screen.
- If the projector does not start automatically, briefly press the Power button to turn it on.
5. Wait for the upgrade to complete. Do not remove the USB drive or cut power during the process.
- The projector’s fan will run at high speed during the upgrade — this is normal.