About K20X Smart Version android OS firmware upgrade

K20X android projector support OTA online update Android firmware. Every time we update the firmware, after uploading to the cloud server, K25 Smart Version will prompt to update, Operation video guide: https://youtu.be/91vD4m-DfOw

It can also be upgraded via U disk

Step:

1. You can click the icon below to download the firmware of K20X Smart Version Android projector. The name of the firmware is "RY-H026.bin". Do not change the name of the file, otherwise the projector will not recognize it.

2. Copy the firmware to the root directory of the U disk. Note: Do not put it in other folders. 

3. Insert the U disk into the second USB port of the projector

4. Open "setting" - "system update" - "local update" successively,  and then upgrade according to the prompt. Wait for the projector to restart automatically and use it after the upgrade is completed.

Note: the upgrade process must not be interrupted.

Firmware upgrade operation guide video: https://youtu.be/m7AwywX60MU

About K20X Smart Version Wifi-display Function

With the development of science and technology, in the current Bluetooth function, it is no longer used for Bluetooth to transfer files. The role of Bluetooth is only to transmit sound. The Bluetooth file transfer function has been replaced by APP.

Wifi, Bluetooth, wifi-display (airplay, Miracast, DLNA) are all different functions. The effects are different.

   wifi-display function, the projector displays the image and sound of the mobile phone screen through the mirroring function of the smartphone. This is not achieved using the Bluetooth function. It is achieved through the screen mirroring function that comes with the phone.

1. ios smartphone realizes screen mirroring via projector’s “iOScast” app

Operation instruction video connection: https://youtu.be/suY8vZuJBK4

2. Android smartphones realize screen mirroring via projector’s “Miracast” app

Operation instruction video connection: https://youtu.be/H8svOSogpA8

Note: Not all Android smartphones support the screen mirroring function. For smartphones that support screen mirroring, there are options similar to this in the "Settings" or "More Functions" options of the smartphone, for example: "Screen mirroing", "Wifi-display", "multi-screen", "screen projection", "play to", "media output", etc.

If the projector's pre-installed screen mirroring app is not compatible with your Android smartphone, you can also download and install Airscreen, happycast and other apps that support wifi-display on the projector.

Tips：

Some video apps with copyright protection cannot support wireless projection from other devices to the projector. For example, Netflix, iTunes Movie, Google Movie, Amazon Prime do not support this function on some smartphone and computers. All Android system projectors on the market are the same.

K20X Smart Version Projector Operation Guidance Video 

1. How to install a hanger for BYINTEK K20X projector?

Operation instruction video connection: https://

2. How to check the system version information of BYINTEK K20X Android projector?

Operation instruction video connection: https://youtu.be/v_3COxBtDps

3. How to change the system language of BYINTEK K20X Android?

Operation instruction video connection: https://youtu.be/jgcOzSBq0ZA

4. How to set the default signal source of BYINTEK K20X Android after booting, for example to HDMI by default?

Operation instruction video connection: https://youtu.be/oEs5NDp9KbA

5. How to operate BYINTEK K20X Smart Version to restore factory settings?

Operation instruction video connection: https://youtu.be/YPLki0y3HFE

12. Android smartphone wireless display to BYINTEK K20X Smart Version projector operation guide

Operation instruction video connection: https://youtu.be/H8svOSogpA8

13. How to set BYINTEK K20X Android sleep automatic shutdown time?

Operation instruction video connection: https://youtu.be/gTG4wh2aT7c

14. How to connect a windows system computer to the projector via HDMI cable?

       Operation instruction video connection: https://youtu.be/HynW24G6gBM

15. How to connect a macbook computer to the projector via HDMI cable?

Operation instruction video connection: https://youtu.be/5ooTcvK4RLI

16. How to solve Fire TV stick 4K connected to the projector to play movies no sound？

Turn off Dolby in the setting sound of Fire TV stick 4K.

         Step："setting"----"display&Sound"---"Audio"---"Dolby digital output"---"Dolby digital plus OFF", Turn off Dolby，Do it a few times，Confirm whether Dolby is successfully turned off.

         Tips: Some sources can work normally without turning off Dolby and setting them to automatic mode. If there is still no sound in automatic mode, you must turn off Dolby.

         Operation video guide：https://youtu.be/2S77xzLHC84

K20X Series Projector Maintenance Guide

1. Without disassembling the projector, how to clean the dust on the screen of BYINTEK K20X series projector?

Operation instruction video connection: https://youtu.be/hGZ4_aHaFsA

2. Disassemble the projector to clean up the dust on the LCD and insulation glass of BYINTEK K20X series projector

Operation instruction video connection: https://youtu.be/LUQwtP7oTfg

3. The LED light of BYINTEK K20X series projector fails to light up. Check whether the cable connection is OK?

Operation instruction video connection: https://youtu.be/79B25cm7GM8

4. Replace the power board of BYINTEK K20X series projector

Operation instruction video connection: https://youtu.be/LjmRZNeDmjg