Flashing a custom ROM onto a Nokia N9 is a nostalgic weekend project rather than a way to build a daily driver. Because modern mobile security standards, cellular bands (many regions have shut down 3G), and app ecosystems have shifted completely, a custom-modded N9 serves best as a pocket Linux terminal, a media player, or a beautiful piece of functional technology history.
A "real" Linux distribution for phones. It supports the N9, though it is primarily for advanced users and developers. nokia n9 custom rom link
: Necessary for modern browsing. 4. Where to Find More Support (The Community) Flashing a custom ROM onto a Nokia N9