: Your device must have an unlocked bootloader.

Stock ROMs often suffer from heavy background resource drain. Prometheus v3 strips out heavy system frameworks, freeing up a massive chunk of the native 3GB RAM. This eliminates stuttering when switching between heavy daily apps. Deep Battery Sleep

: This ROM is exclusively meant for the Exynos 7870 processor variants of the Galaxy J7 Prime (e.g., SM-G610F, G610M). Do not attempt on Snapdragon variants.

Navigate to your storage and tap on the Prometheus v3 .zip file. Swipe the slider to initiate the flash.

Swipe the execution slider at the bottom to perform the wipe.

Coupled with the customized Kronos kernel, the ROM is engineered to minimize passive battery drain when the screen is off. Users moving from stock firmware generally notice a substantial boost in daily Screen-on-Time (SoT). Pure Customization

: Ports high-quality visual elements from newer One UI generations directly onto the J7 Prime interface.

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: You need TWRP (Team Win Recovery Project) recovery actively installed.

The Prometheus v3 ROM is a highly customized firmware built to bring a newer visual ecosystem and enhanced performance metrics to the legacy Samsung Galaxy J7 Prime .