The most famous custom ROM for the Nokia N9 was NITDroid, spearheaded by developer Alexey Roslyakov (known as @Aras技术 or Icewyng).
Before you can explore the exclusive world of N9 custom ROMs, you need to know the tools and terminology. This is the classic "How to Install" section, tailored for the device's unique ecosystem. nokia n9 custom rom exclusive