After an unintended iOS update over 2 weeks ago, Djay Pro no longer recognizes my controller. I have reached out to Algoriddim support who has replied to my detailed explanation of the issue by asking me to basically repeat what I’ve already written out to them, which I have done and included a video with no response from Algoriddim. I am frustrated because I have already had to cancel one gig for this, and I am on track to have to cancel another scheduled for this Friday.
Here’s what’s happened:
My controller (Reloop Mixon 4) connected to my iPad Pro 12.9” (4th gen, iOS 18.3.1) no longer responds to the Djay Pro app (5.2.9)
An automatic update occurred o my iPad, updating to iOS 18.3.1 which seems to not be compatible with MIDI devices (my theory). The controller then stopped working within the DJ app.
Connected via USB-B to USB-C, the Reloop Mixon 4 does not register. I’ve tried another controller (Numark Mixtrack Pro FX) with the same problem. I’ve tried new USB cables which also did not resolve the problem. I’ve connected via USB hub with no resolution. I’ve rescanned for MIDI devices with no luck. I’ve re-installed DJ Pro, which has done nothing. I’ve force-restarted my iPad with no luck. I’ve ensured that the Mixon 4 firmware is up to date. No device is recognized in the Djay Pro app. I really can’t afford to cancel another gig, so if anyone has any advice, I’d greatly appreciate it.
Device model (iPad Pro 12.9” 4th Gen):
Version of operating system (iOS 18.3.1):
Version of djay ( Djay Pro AI 5.2.9):
Hardware/controllers used (Reloop Mixon 4):
NOTE: It works perfectly fine when connected to my iPhone 15 Pro Max which is running iOS 17.5.1
Hi @PNas21, welcome to the Community! Sorry to hear you’re experiencing this issue. Based on your description, this sounds like an issue with your iPad USB port or with iOS. Have you reached out to Apple Support or tried taking your iPad to an Apple Store to have diagnostics performed on it? I’ve experienced issues similar to this in the past that could only be resolved at Apple.
Regarding the USB hub, are you using a powered USB hub and connecting it to power with your original iPad charger and cable? Please confirm that your iPad is charging when connected this way.
In the meantime, here are some other things we can check:
Check USB Access Permissions
• Go to Settings > Face ID & Passcode
• Scroll down to Allow Access When Locked
• Make sure Accessories is turned ON
• If it’s OFF, iOS may block USB MIDI devices after the iPad has been locked for a while.
Test in Another App
• Download MIDI Wrench or MIDI Scope (free in the App Store).
• Open MIDI Wrench, then connect your Mixon 4.
• If the controller doesn’t appear, iOS isn’t recognizing MIDI devices, confirming an iOS bug.
Try a Different Power Source
• Some users report that after iOS updates, devices need more power to function.
• If using a USB hub, make sure it’s powered (not just a data hub).
• Try using Apple’s USB-C Digital AV Multiport Adapter with power connected.
Reset iOS MIDI System
• Backup your iPad to your laptop or iCloud first.
• Go to Settings > General > Transfer or Reset iPad > Reset > Reset Location & Privacy
• After resetting, reconnect the Mixon 4, then open djay Pro and rescan for MIDI devices.
Hello! It’s been a week since my last reply. I’m going to consider this topic completed for now so I can focus on others. However, please feel free to respond and we can definitely revisit this. Thanks!
I’m facing the same issue on my iPad Pro 12,9" (M1) running iOS 18.3.2. It seems to be an iOS issue, as MIDI Wrench is unable to find the device as well. I’m gonna try out the next iOS 18.4 RC. Posting this here for others running into the same issue.
Thank you to the Algoriddim staff that has consistently reached out to help with the issue.
My case turned out to be a combination of issues both with the iOS update and with the device itself.
the iOS update did not install correctly leaving out firmware mapping. Apple was able to help with this by doing a full re-install at the Genius Bar. Shortly after, a new issue came up.
after Apple updated the iPad correctly, after the restart it was realized that the iPad was no longer connecting to anything via USB and charging had slowed down significantly. The USB-C port showed some signs of damage.
I was able to borrow a MacBook Pro from a friend and everything now works fine. My Mixon 4 now connects perfectly fine to my iPhone, and is also operational through the MacBook.
Mixon 4:
Although the Mixon 4 now connects, another issue (I attract issues) had come up which seems to be common for the Mixon 4. The channel 2 fader does not work properly at all. Any vibration on the controller triggers the fader in the app to move on its own. According to forums, having the fader replaced solves this issue but if you don’t have soldering skills, good luck with that. I’ve chosen instead to re-map all of the channel 2 functions to channel 4, effectively swapped 2 and 4. Although not ideal, it makes the controller functional enough.
You’re welcome @PNas21. Glad to hear you were able to resolve the original issue. Sorry to hear about your Mixon 4 fader issues - if this is a used controller, you might also want to try cleaning the fader. Thank you very much for sharing the details resolution - this is very helpful!
