This is Noble rom, an android 12 custom rom for the Galaxy Note 9 and S9 by AlexisXDA on XDA. It has some bugs but nothing that's deal breaker, some stuff have
Galaxy Note 9 gets new One UI 2.0 beta update - NotebookCheck.net News
Samsung Galaxy Note9 6+128GB Note 9 N960U Android 8.1 Octa Core Single Sim 6.4 Inch Quad HD+ 12+12MP Dula Camera - Black | Jumia Nigeria
Samsung Galaxy Note 9 Android 10 update now out for Pie users - SamMobile
Samsung Galaxy Note 9 Review Nearly The Best Android Smartphone - BW Businessworld
This is Noble rom, an android 12 custom rom for the Galaxy Note 9 and S9 by AlexisXDA on XDA. It has some bugs but nothing that's deal breaker, some stuff have
Android 12 (One UI 4) now available for Samsung Galaxy S9 and Note 9 using Noble ROM 2.0 - RPRNA
Samsung Galaxy Note 9: 6 Months Later - 9to5Google
Redmi 9, Note 9 and POCO M2 got Android 12 update internally - Real Mi Central