Since Nokia's acquisition of Alcatel-Lucent, many carrier-grade infrastructure products (like routers and optical gear) are serviced through the Nokia Support Portal .
Always read the "Readme" or release notes provided with the download. These documents often contain "better" installation paths, such as specific intermediate versions required before jumping to the latest release.
echo "Downloading with resume support..." wget -c -O $FILENAME $URL
: Systems like Rainbow may allow for device firmware updates directly through the management interface under device settings. Best Practices for Upgrading
A poor download process leads to bricked devices, security vulnerabilities (like the infamous Ripple20 or NTP exploits), and hours of downtime. A better process guarantees network resilience.