How to Fix OCS: No schema for DeviceProperties at 0 index, context on macOS
Wi-Fi, Bluetooth, AWDL, Continuity and Location Services problems usually come from chipset support, kext pairing, privacy settings or network-location corruption. On Hackintosh systems, Location Services and Continuity depend on working Wi-Fi, Bluetooth, AWDL and correct AirportItlwm or itlwm/HeliPort behaviour.
Quick Checks
- Backup current state: Save a copy of your working EFI and run a full system backup before changing settings.
- Identify hardware components: Note down your exact CPU, GPU, Wi-Fi card, and motherboard/laptop model.
- Ensure utility alignment: Keep OpenCore, OCLP, and ProperTree updated.
Fix Steps
- Create a rollback point: Make a Time Machine backup and keep a copy of your last working EFI folder before editing OpenCore, kexts or root patches.
- Confirm the exact chipset: Identify the Wi-Fi, Bluetooth and Ethernet controller from System Information, Hackintool or Linux/Windows device manager.
- Use the correct network stack: Match AirportItlwm, itlwm, HeliPort, IntelBluetoothFirmware and BlueToolFixup to the exact macOS version.
- Reset macOS network state: Remove the current Wi-Fi service, reboot, add it again, then reconnect to a simple WPA2 network before testing advanced features.
- Check privacy permissions: Open System Settings and confirm Location Services, Maps, Weather and system services are enabled.
- Test Apple features separately: Verify normal internet first, then Bluetooth, then AirDrop/Continuity. Do not debug all three at the same time.
Do Not Continue If
- Do not continue if: you do not have a working EFI backup, a Time Machine backup, or another bootable macOS installer.
- Stop and capture evidence: if the machine stops booting, take a photo of the last verbose line before changing more settings.
Verify It Worked
- Maps can locate you without falling back to a stale location.
- Wi-Fi reconnects after reboot and sleep.
- Bluetooth remains available after a cold boot.
- Console no longer shows repeated wireless or location daemon errors.
Rollback
- Restore the previous EFI if Wi-Fi disappears completely.
- Switch from AirportItlwm to itlwm + HeliPort, or the reverse, if the issue is specific to one driver path.
- Use Ethernet or USB tethering while testing so you do not lose access to downloads.
Next Action
- Test now: reboot twice, reproduce the original problem, and confirm whether the same symptom returns.
- If it still fails: record the Mac model, macOS build, OpenCore or OCLP version, GPU, Wi-Fi/Bluetooth chipset, and the last visible error.
- Read next: use the related searches below for the nearest OpenCore or OCLP fix before making another change.
Related iATKOS Searches
- OpenCore · OCLP · EFI · kexts · config.plist · macOS troubleshooting
Original Question: "OCS: No schema for DeviceProperties at 0 index, context !"
Hello i recently finished building my Hackintosh Asus, but there is one more problem that is annoying me, system works great, gui-based booting great, but every time i boot into opencore that message appears for like a second and then the gui menu to select drive appears, im using Opencore 0.9.8 RELEASE version, the last one i think, i saw some other forums where they say the problem is because they used some configurator like opencore config. I did the config.plist myself from scratch, thats why i do not understand, can someone help me?
Specs:
- CPU: Intel Core i7 3630QM
- GPU: Intel HD Graphics 4000
- dGPU(disabled): NVIDIA GT740m
- RAM: 8GB 1600MHZ DDR3 Memory
- Motherboard: Really i dont know what motherboard it has
- Audio Codec: Realtek ALC663
- Ethernet Card: Atheros AR8161
- Wi-Fi/BT Card: Atheros AR9485WB (working through itlwm kext
- Touchpad: Asus ELAN Touchpad
- Opencore Version: 0.9.8
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