How to Troubleshoot AirPlay Black Screen Issues on Your JAV Z Series Smart Board

AirPlay Connects but Shows a Black Screen on JAV Z Series: Troubleshooting iOS 27 and macOS 27 Compatibility Issues

If your iPhone or MacBook connects to your JAV Z Series Smart Board through AirPlay but the shared screen remains black, check the operating system version on your Apple device.

In a documented JAV LED55Z support case, the problem affected an iPhone running iOS 27.0.1 and MacBooks running macOS 27.0.1, while an iPad running iPadOS 26.7.1 continued to mirror successfully.

JAV Support also reproduced the issue on an iPhone 17 Pro Max: AirPlay worked on iOS 26.6, but displayed a black screen after the phone was updated to iOS 27.0.

This guide explains how to compare your symptoms with those test results, check the network connection, and install the application updates provided by JAV Support.

Affected Devices and Reported System Versions

The following results come from the customer’s report and JAV Support’s reproduction tests.

The customer’s Smart Board was a JAV LED55Z running Android 14. Its system update check reported that the system was up to date.

These results identify the versions tested in this case. They do not establish that every device running iOS 27 or macOS 27 is affected, or that every earlier version is compatible.

Symptoms

This guide is particularly relevant if:

• Your iPhone running iOS 27.0 or 27.0.1, or your MacBook running macOS 27.0.1, connects through AirPlay but produces a black screen.
• AirPlay worked before an Apple operating system update and stopped displaying an image afterward.
• An iPad running iPadOS 26.7.1 still mirrors successfully to the same Smart Board.
• Your JAV LED55Z running Android 14 reports that its system is up to date, but the issue continues.

If you use a different operating system version and see similar symptoms, follow the checks below and provide your exact version to JAV Support.

Why Can This Happen?

The support investigation identified a compatibility issue between newer Apple operating system versions and the Smart Board’s existing screen-sharing software.

The clearest reproduction came from JAV Support’s iPhone 17 Pro Max:

• On iOS 26.6, AirPlay screen mirroring worked.
• After updating the same phone to iOS 27.0, AirPlay still connected, but the Smart Board displayed a black screen.

The customer reported a similar pattern: iOS 27.0.1 and macOS 27.0.1 did not mirror successfully, while iPadOS 26.7.1 worked.

This pattern points to software compatibility as a possible cause when your symptoms match. Other black screen problems may require separate investigation.

Step 1: Record Your Device and Operating System Versions

Before changing settings or installing updates, record:

• Your Smart Board model and Android version.
• Your iPhone, iPad, or MacBook model.
• The exact iOS, iPadOS, or macOS version.
• The macOS build number, if available.
• Whether AirPlay connects and whether an image appears.

Compare your results with the table above.

For example, an iPhone running iOS 27.0.1 that connects but shows a black screen closely matches the customer’s reported symptoms. A working iPad running iPadOS 26.7.1 on the same Smart Board provides another useful comparison.

Keep the full version number: iOS 27.0 and iOS 27.0.1 were separate reported tests, and “iOS 27” alone provides less useful information for troubleshooting.

Step 2: Test AirPlay Through the Smart Board’s Wi-Fi Hotspot

Connect your iPhone directly to the Smart Board’s Wi-Fi hotspot to check whether changing the network connection affects the problem.

Enable the Smart Board’s hotspot

1. Open Settings on your JAV Smart Board.
2. Go to Network & Internet → Hotspot & Tethering.
3. Turn on Wi-Fi Hotspot.
4. Note the hotspot’s network name.
5. Open the hotspot settings and view its password.

Menu names may vary depending on the installed software version.

Connect and test

1. Open Wi-Fi settings on your iPhone.
2. Connect to the Smart Board’s hotspot.
3. Try AirPlay screen mirroring again.
4. Record whether the mirrored image appears or the screen remains black.

In the documented case: The customer tested the iPhone running iOS 27.0.1 through the Smart Board’s hotspot, but screen mirroring still did not work.

If mirroring works through the hotspot, your usual network environment may be contributing to the issue. Share that result with JAV Support or your network administrator.

If it still fails, continue below. A failed hotspot test alone does not confirm the cause.

Step 3: Compare Another Apple Device

If another Apple device is available, test it with the same Smart Board.

In the documented case:

• The iPhone on iOS 27.0.1 did not mirror successfully.
• Two MacBooks on macOS 27.0.1 also failed.
• The iPad on iPadOS 26.7.1 continued to work.

If you see a similar difference, send JAV Support the system version and result for each device.

A working device helps establish that the Smart Board can receive a mirrored image under at least one tested configuration. It does not guarantee compatibility with every other device or system version.

Step 4: Request the Correct Application Update Package

A Smart Board system update check showing “up to date” does not necessarily mean its screen-sharing application includes the required compatibility update.

The customer’s LED55Z running Android 14 reported that its system was current. JAV Support later supplied separate application updates intended to address the AirPlay issue.

Contact JAV Support and include:

• Your Smart Board model and system information.
• Your exact Apple operating system version.
• Whether your symptoms match the iOS 27.0 / 27.0.1 or macOS 27.0.1 results described above.
• Your hotspot test and other-device test results.

Request the update package appropriate for your device.

Applications included in the documented update package

JAV Support instructed the customer to update these three applications:

After the screen-sharing update, JAV Support identified potential compatibility issues with related applications. The customer was therefore asked to install all three updates.

Use the files and instructions supplied for your device. The filenames above identify the package used in this case; they are not a universal version recommendation for every JAV Z Series model.

Step 5: Download and Transfer the Update Files

You can use a USB drive or download the files directly on the Smart Board.

Option A: Transfer using a USB drive

1. Download all update files provided by JAV Support.
2. Copy the files to a USB drive.
3. Insert the USB drive into the Smart Board.
4. Open the USB drive on the Smart Board and locate the APK files.

Option B: Download directly on the Smart Board

1. Open the download link supplied by JAV Support on the Smart Board.
2. Download all required APK files.
3. Locate the downloaded files on the device.

Step 6: Install All Required Application Updates

1. Open an APK file on the Smart Board.
2. If prompted, select Update to update the existing application.
3. Follow the on-screen instructions until installation finishes.
4. Repeat for each remaining application in the package.
5. Confirm that all required updates have finished installing.

If your package includes QWriting, QuickShare, and Sidebar, install all three as directed by JAV Support.

Keep the Smart Board powered on throughout installation. Do not disconnect the power or interrupt an installation in progress.

If an installation fails, record the error message and contact JAV Support.

Step 7: Restart the Smart Board

Restart the Smart Board after completing the updates.

The sidebar may temporarily disappear after installing SideMenu.apk. This behavior was noted in the support instructions, and the sidebar should reappear after a restart.

If it remains missing, report the issue to JAV Support.

Step 8: Retest the Affected Apple Devices

After restarting, test AirPlay again with the devices that previously failed.

Record the result alongside the exact operating system version:

The update package was supplied to address compatibility with newer iOS and macOS versions. Confirm the outcome on your own devices after installation.

If AirPlay Still Shows a Black Screen

Send JAV Support the following information:

• Smart Board: Model, Android version, and system version information.
• Affected Apple devices: Models and exact operating system versions.
• macOS build: Include it if available; the original customer report listed macOS 27.0.1, build 26A434 for one MacBook.
• Symptoms: Whether AirPlay connects successfully but shows no image.
• Network test: Whether the problem continues through the Smart Board’s hotspot.
• Comparison tests: Which other devices work or fail, including their system versions.
• Installed updates: Application versions or APK filenames.
• Errors: Any installation messages or missing sidebar behavior.
• Visual evidence: A photo or short video of the problem, if available.

Providing exact versions helps Support compare your case with the existing reports and determine the next troubleshooting step.

Frequently Asked Questions

Which Apple operating system versions were associated with the black screen issue?

The customer reported the issue with iOS 27.0.1 and macOS 27.0.1. JAV Support independently reproduced it on an iPhone 17 Pro Max running iOS 27.0.

These are the versions documented in this case, rather than a complete list of affected versions.

Which versions worked during testing?

The customer’s iPad running iPadOS 26.7.1 mirrored successfully. JAV Support’s iPhone 17 Pro Max also worked on iOS 26.6 before it was updated to iOS 27.0.

These results apply to the configurations tested and do not guarantee that every device running those versions will behave identically.

Which Smart Board model and Android version were involved?

The customer used a JAV LED55Z running Android 14. Contact JAV Support to confirm the appropriate update package for other models or software configurations.

My system version is different. Can I still follow this guide?

You can use the network and device-comparison checks to collect useful troubleshooting information. Before installing APK updates, ask JAV Support to confirm the correct package for your model and installed software.

My Smart Board says it is up to date. Why might I need another update?

In the documented case, the system update check reported that the Smart Board was current, but separate application updates were subsequently provided. A system update check alone did not resolve the screen-sharing application compatibility issue.

Should I install only the QuickShare update?

Follow the instructions supplied with your package. In this case, JAV Support requested updates to QuickShare, QWriting, and Sidebar to address compatibility between the applications.

The sidebar disappeared after updating. What should I do?

Restart the Smart Board. The sidebar should return after the restart. If it does not, contact JAV Support.

Was the update confirmed to resolve the customer’s issue?

The available correspondence includes the update package and installation instructions, but does not include the customer’s final test results. The package was intended to address the reported compatibility problem; successful operation should be verified after installation.