Eliminate resource-heavy Samsung bloatware to free up RAM and reduce CPU throttling.

Now it's time to install the custom ROM:

Custom software utilizes better CPU governors and memory management, making the Exynos 7870 processor feel faster and more responsive.

: If the GSI doesn't include Google Apps, flash the patched GApps zip file and then Magisk for root.

Boot into : Press and hold Volume Down + Home + Power simultaneously. Release when a warning screen appears, then press Volume Up to continue. Connect your phone to your PC via USB.

Experience features and security patches from Android 10, 11, or even newer versions.

TWRP (Team Win Recovery Project) is a custom recovery that allows you to flash custom ROMs, kernels, and other modifications. For the J730F, TWRP is readily available.

This means the ROM zip file does not match your device model, or your TWRP version is outdated. Ensure you downloaded the exact ROM for the SM-J730F and update TWRP to the latest version.

Do not download ROMs from random YouTube video links. Stick to trusted sources:

: Tap Reboot > System . The first boot may take 5-10 minutes, so be patient.

To install custom files, you need a custom recovery like Team Win Recovery Project (TWRP).