Step 1. Register your devices with Developer Portal (not required for Apple Enterprise Developer Program members)
Obtain device UDID
– option A: Device is managed by MDM – follow your vendor instructions for obtaining UDID, no physical connection required.
– option B: Physical connection:
a. Connect your device to your Mac via USB-C cable.
b. Launch Apple Configurator and select your device.
c. Copy UDID value.
Click the Add button (+) in the upper-right corner.
Apple Enterprise Developer Program Members:
Select Production > In-House and Ad Hoc.
Apple Developer Program Members:
Select Production > App Store and Ad Hoc.
Follow instructions on the page and save CSR file to disk, press Continue.
Upload saved CSR file and press Continue.
Download generated certificate and then double-click the .cer file to install in Keychain Access.
Launch Keychain Access, select Certificates on the bottom-left menu.
Locate a certificate named iPhone Distribution: Your Name (ABCDEFGHIJ), right-clickand press Export.
You’ll be using this file often, so pick an appropriate name and directory for storage.
Click Save.
Pick a password. Again, you’ll be using this password often, so make sure to remember it or keep it somewhere safe. If lost, you can regenerate .p12 file by going back to step 3.9.