the desired ROM .zip file and compatible GApps (Google Apps) for the specific Android version.
Use TWRP to back up your current system, data, and modem partitions to an SD card. How to Install an Updated Custom ROM Follow these general steps to update your SM-J110H: smj110h custom rom updated
While highly experimental for the SM-J110H due to its Spreadtrum chipset, there have been ongoing efforts on GitHub as recently as 2024 to refine the kernel and device trees for better stability. Prerequisites for Flashing the desired ROM