Analysis of Custom ROM Availability, Stability, and Installation Procedures for the Samsung Galaxy J4 Plus (Model: SM-J415F/G/N).
If you want the purest Android experience without Samsung’s additions, LineageOS is the gold standard. While official support may have ended for older devices, unofficial builds kept the J4 Plus alive. samsung galaxy j4 plus custom rom hot
While there are unofficial builds of Android 12 (LineageOS 19.1), they are often labeled as "unstable" or prone to bootloops. Analysis of Custom ROM Availability
Assuming you have TWRP installed, here is the specific order to flash these ROMs to avoid boot loops. samsung galaxy j4 plus custom rom hot