An iPad stuck in a loop after iTunes restore usually needs DFU mode to fix it. Here are the steps:
1. DFU Mode restore: Connect your iPad to Mac/PC. For iPad Pro with Face ID, enter DFU mode by pressing Volume Up quickly, Volume Down quickly, then hold the Top button for 3 seconds, then hold both Top and Volume Down for 10 seconds, then release the Top button while holding Volume Down for 5 more seconds. Open Finder (Mac) or iTunes (Windows) - it will detect DFU mode. Click Restore. This downloads clean firmware directly from Apple.
2. Use a different computer: Your laptop's iTunes cache may have a corrupt firmware file. Try another Mac or PC to do the restore.
3. Check iPadOS compatibility: If the iPad is older and considered obsolete, it may be trying to install an iPadOS version it does not support, causing the loop. What exact iPad Pro model do you have? The iPad Pro models supported on the latest iPadOS are limited.
4. Try older firmware via 3uTools or similar (advanced): Some third-party tools can push an older compatible iOS to the device.
5. Contact Apple: Even if the device is out of limited warranty, Apple Support at 1-800-MY-APPLE can sometimes assist with restore loops, especially hardware-related ones.
DFU mode restore (step 1) is almost always the fix for persistent update loops after a normal restore fails.