For 9 Glorious Months, My MacBook Pro & J5 Create JCD543 HUB Were Best Friends… Until I Updated macOS
For nearly a year, my MacBook Pro 14” (2023, M2 Pro, 16GB RAM) worked flawlessly with my J5 Create JCD543 HUB, allowing me to run:
✅ 4 External Displays (Samsung, LG, Insignia, Samsung)
A setup that worked perfectly… until I updated macOS.
Then Came the Update… and the Issues Began
First, I updated last week. Two of my four displays stopped working. No big deal, I thought—I’ve dealt with display quirks before.
Then, like an optimist ignoring red flags, I updated again last night to 15.4 Beta (24E5222f) and… well, now things are completely broken.
My Once-Perfect Setup (Now a Display Disaster)
JCD543 HUB → 2 HDMI displays (not working)
JUD380 HUB → 1 HDMI display (partially working, unstable)
MacBook HDMI port → 1 HDMI display (working, but feeling abandoned)
JCA365 USB-C to Dual HDMI Adapter (Not part of my setup, but tested—also not working)
What I’ve Tried (aka My Troubleshooting Journey)
✔ Restarted my Mac multiple times
✔ Uninstalled and reinstalled J5 drivers
✔ Swapped cables, unplugged/replugged everything, tested known-working HDMI cables (they work fine on other devices)
✔ Deleted /Library/Preferences/com.apple.windowserver.displays.plist (this fixed a similar issue in the past, but the file no longer exists in this update)
The Likely Culprit?
It seems to be a J5 driver issue triggered by the macOS update—and I’m not alone. Others are reporting similar problems.
Apple… Any Fixes?
I just want my four screens back. The setup worked flawlessly for 9 months, so it’s hard to believe it was never meant to work.
If anyone has a workaround, I’m open to testing any solution—whether it’s a driver update, system tweak, or hidden macOS setting that might bring my displays back to life.
Any advice would be greatly appreciated! Thanks in advance.
(P.S. Apple, if you’re reading this—please look into this issue!)
This is a dedicated space for developers to connect, share ideas, collaborate, and ask questions. Introduce yourself, network with other developers, and join us in fostering a supportive community.
Selecting any option will automatically load the page
Post
Replies
Boosts
Views
Activity
Bluetooth is no more working with the upgrade to iOS 18.3.1 I loaded this night !!! (iPhone SE model III).
Please debug it!
Topic:
Community
SubTopic:
Apple Developers
There seems to be a broken USB sync and Finder recognition issue. Is there a fix to this?
Topic:
Community
SubTopic:
Apple Developers
HELP THANKS , ANY ONE KOWN WHY PAY AND PASS TWO WEEKS, STILL IN PEDDING?
Topic:
Community
SubTopic:
Apple Developers
Currently running 15.5 Beta 3 on a Mac Studio M4. I am unable to read/write to my Home folder from most of my applications. I receive an error basically saying I do not have access rights to the file/folder. If I go to the file directly and open it, it works. I have repaired disk permissions, checked the Sharing & Permissions settings via Get Info, and finally called Apple. Of course, since I am running the beta, the support was quite limited. I will add that I am also unable to open .dmgs that have been downloaded to my Downloads folder. I receive the "The disk image couldn’t be opened. The operation couldn’t be completed. Operation not permitted" error. If I copy the .dmg to another drive, I can open it from there.
Topic:
Community
SubTopic:
Apple Developers
In preparing my ipad 7th gen for resale, I factory reset and now it will not power up. Tried hard reset, new cables, different computer. iTunes does not recognize the ipad yet device manager shows it hooked to usb port. Any advice? Thanks!
Topic:
Community
SubTopic:
Apple Developers
Issue with Heart Rate Graph from Apple Watch in iOS App
Hello Community!
I hope everyone is doing well. I'm developing an iOS app that includes a feature to display a graph of the heart rate recorded during a route using the Apple Watch.
Current Implementation
I have successfully implemented data collection and transfer from the Apple Watch to the iPhone.
The app's main UI correctly displays the user's real-time BPM.
When the user stops the route, an analysis view is generated, showing speed and altitude (both work perfectly).
Expected Behavior
The user starts recording a route while monitoring heart rate.
After tapping "Stop Route," an analysis view should display a heart rate graph along with speed and altitude data.
Issue Encountered
Despite multiple attempts, I have not been able to properly generate the heart rate graph.
The only result I have achieved so far is a flat line with points representing the recorded BPM over time, instead of a proper graph.
Request for Help
If anyone has experience implementing a similar feature, I would appreciate any guidance on correcting my implementation.
I can share:
The file responsible for graph visualization.
The file handling data processing after the user stops the route.
Any help or suggestions would be greatly appreciated!
Summary
I'm trying to display a heart rate graph from Apple Watch data in my iOS app. While data collection and transfer work fine, the graph only shows a flat line instead of a proper visualization. Speed and altitude graphs work correctly. If anyone has experience with this, I’d love some guidance!
Topic:
Community
SubTopic:
Apple Developers
I installed the new developer beta 26 yesterday, but since that I only have problems with my iPhone. Besides not being able to update the software bc an error appears, I also don‘t have the abbility to use mobile data. If I try to, it only says „could not activate mobile data network“. I already tried to restart the phone, to reset it or to take the SIM out and in
Topic:
Community
SubTopic:
Apple Developers
My main app is CardView based w/programmatic navigation.. My secondary app is a nice EventListView w/programmatic navigation. Both are functional with no errors.
I want to add an event list to my CardView app but the appearance is all wrong. See image. The blue swirl at bottom is all of my List that appears.
I can post images of code, if needed.
My question is this - can I combine CardViews and ListViews?
Topic:
Community
SubTopic:
Apple Developers
As of today we seem to continuously get back 21 of the product IDs we have defined when the shop initializes.
This is causing what looks like intermittent bug behavior in our shop. The IDs sent each time are random (not always the same 21). So sometimes they match shop offers and the packs look right and can be bought and sometimes the ones our current shop offers need are not sent and so the offers in game look wrong and error when you try to buy.
Is anyone else seeing this new behavior of not getting down all their product IDs successfully?
i am using this code
public static bool CheckForForceUpdate()
{
try
{
Version latestVersion = new(GetLatestVersion());
Version currentVersion = new(AppInfo.VersionString);
if (latestVersion != null && currentVersion < latestVersion)
{
NSUserDefaults.StandardUserDefaults.SetBool(true, StorageKey.IsForceUpdate);
return true;
}
else
{
NSUserDefaults.StandardUserDefaults.SetBool(false, StorageKey.IsForceUpdate);
return false;
}
}
catch (Exception ex)
{
Console.WriteLine("CheckForForceUpdate....." + ex.Message);
return false;
}
}
public static string GetLatestVersion()
{
try
{
string appId = "1586153397"; // Replace with your App Store app ID
string url = $"https://itunes.apple.com/lookup?id={appId}";
using (HttpClient client = new HttpClient())
{
var response = client.GetStringAsync(url).GetAwaiter().GetResult();
var json = JObject.Parse(response);
var latestVersion = json["results"]?[0]?["version"]?.ToString();
return latestVersion;
}
}
catch (Exception ex)
{
Console.WriteLine("GetLatestVersion..." + ex.Message);
return null;
}
}
The value of latestVersion should 2.1 in my production app i am not able to get this
hence i am not able to achieve Force Update functionality
Topic:
Community
SubTopic:
Apple Developers
A question from an ordinary user for developers:
The essence of the problem:
I installed the To Do List by MinimaList app on both my MacBook and iPhone. After installing it, I decided not to use it and deleted the application.
https://apps.apple.com/us/app/minimalist-to-do-list-widget/id993066159
However, it turned out that not everything was removed. Specifically:
• In the “Allow Others to Find Me” section on both my MacBook and iPhone, these apps still appear. No matter what I do—whether I delete or clear them—they continue to be displayed there.
• This app continues to appear in the section located at:
Settings → Apple ID → iCloud → Stored in iCloud → See All → Allow Finding Me – To Do List and one more item.
• It cannot be deleted.
• It won’t delete on my MacBook, and it won’t delete on my iPhone.
• It also appeared in iCloud itself under the Email Search section.
P.S.
The official Apple support (without violating any internal regulations) advised me to post on the forum to get in touch with Apple developers.
In hope, I am posting this question here.
I have implemented subscription renewals in my app and now want to integrate a referral system. Each user should receive a unique referral code that they can share with others. When a new user signs up using a referral code, both the referrer and the referred user should receive a bonus.
What is the best approach to implementing this feature efficiently?
Apple announces a Japanese game (Assassin's Creed) in Japanese in Japan but then states "the App is currently not available in your country or region"... that is, Japan!
https://developer.apple.com/jp/news/?id=q2zte70j
Game is unavailable so why announce it?
I have an iPhone 14 running iOS 26 Beta 2 that I wanted to start using Personal Voice on. It allowed me to complete the recordings and start the process, however even with the phone charging and locked the process hangs.
It is connected to WiFi and cellular while attempting to run. It is connected to a 20W apple charger with an offical cable. I have a sneaking feeling it's related to me running the iOS beta on this device. I've provided some info below.
iOS 26 Beta 2
iPhone 14 128gb
Model MPUF3ZD/A
No SIM restrictions
Topic:
Community
SubTopic:
Apple Developers
My mail app keeps crashing? Can Anyone help?
I'm using Mac OS Ventura 13.7.5 - updated yesterday and having this issue ever since:
Translated Report (Full Report Below)
Process: Mail [924]
Path: /System/Applications/Mail.app/Contents/MacOS/Mail
Identifier: com.apple.mail
Version: 16.0 (3731.700.6.1.10)
Build Info: Mail_App-3731700006001010~2
Code Type: X86-64 (Native)
Parent Process: launchd [1]
User ID: 502
Date/Time: 2025-03-31 23:17:55.8952 +0100
OS Version: macOS 13.7.5 (22H527)
Report Version: 12
Anonymous UUID: 2B9E5AC3-9B82-567C-8B10-A0555BEEE9BC
Time Awake Since Boot: 990 seconds
System Integrity Protection: enabled
Crashed Thread: 3 Dispatch queue: MCTaskHandler queue (QOS: BACKGROUND)
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6
Terminating Process: Mail [924]
Application Specific Information:
abort() called
Topic:
Community
SubTopic:
Apple Developers
I want to implement a feature where a custom notification sound file is downloaded from the server when the app is first launched and stored locally on the device. When a push notification arrives, the stored sound should be played in all app states, including foreground, background, and terminated (killed) state.
Does anyone have an idea on how to implement this in iOS? Specifically, I am looking for guidance on:
1)Downloading and storing the sound file securely on the device.
2)Using the locally stored file for push notification sounds.
3)Ensuring the sound plays correctly in all states, including when the app is not running.
Topic:
Community
SubTopic:
Apple Developers
Tags:
APNS
User Notifications
Sound and Haptics
Notification Center
iPhone:
iPhone 12 pro max, iOS:18.3.1
Step:
Connect CarPlay to my car, after connection success, CarPlay screen is black.
This issue only happens of first time connection;
I have asked OEM factory, they told me because of my iOS version is larger than 17.5, and above this version, will have this issue.
So, I need your help to figure problem and update in new version.
Hi everyone,
We’re seeing a rare but frustrating issue in our iOS VoIP app and would appreciate any advice.
What’s happening:
In some VoIP calls between two users (let’s say A and B), B can’t hear A’s voice, but A can still hear B just fine.
It doesn’t happen often, but once it does, the issue persists until the device is restarted.
Users who experience this issue typically have other voice or conferencing apps installed and actively use them.
They report that when our app runs into this problem, those other apps continue to work normally.
⸻
What we’ve ruled out:
• AVAudioSession has microphone permission, and audio input works under normal conditions
• Network conditions are stable
• App-side logic seems solid — the issue occurs extremely rarely (e.g., 1 out of several thousand calls), making it unlikely to be caused by a consistent bug in our call flow
⸻
What we’ve tried to fix it (all ineffective):
Restarting the call — no effect
Force-quitting and relaunching the app — no effect
Toggling Bluetooth: disconnecting and reconnecting audio route, or switching back to built-in mic — no effect
Replugging wired headphones or switching to the default iPhone audio input — no effect
⸻
What actually works (so far):
• Restarting the device — this is the only action that reliably fixes the issue
⸻
What we’re looking for help with:
1. Does this sound like an iOS-level AVAudioSession routing or audio stack issue?
2. Is there any way to recover from this state without rebooting the device — either through iOS system settings or programmatically?
3. Are there any known audio routing or input bugs in iOS that match this behavior?
Thanks in advance — any suggestions or pointers would be greatly appreciated!
Topic:
Community
SubTopic:
Apple Developers
Hi,
Am using fastlane to upload into TestFlight. Am able to successfully upload the build without any issues.
For Testing Internally , I want to upload the build into App Store Connect but I should restrict it on submitting to App Store. ( This is possible when i distribute the app via TestFlight Internal Only from XCode -> Organizer -> Distribute App (Select option with TestFlight Internal Only). I want to achieve the same using either Transporter/ fastlane.
I tried setting buildAudienceType to INTERNAL_ONLY as per https://developer.apple.com/documentation/appstoreconnectapi/buildaudiencetype but it is not working.
Can you suggest how i can achieve this via fastlane?