Cisco NCS5501-SE Firmware Update

I need the firmware on a Cisco NCS5501-SE router brought up to the latest stable IOS XR release. I’m not completely sure whether additional compatibility checks are required, so I’d like an expert who can confirm version support before proceeding and guide me through any pre-upgrade steps... (Budget: $30 - $250 USD, Jobs: Cisco, Network Administration, Network Engineering, Network Monitoring, Network Security, Technical Documentation)