If you decide to proceed, perform these checks to minimize the risk of a permanent "brick":

Likely contains a patched boot.img , vbmeta.img , and the Magisk app or a custom recovery (like TWRP).

Go to Settings > About Phone . Ensure your build number ends with or includes V686 .

The file is a specialized firmware or rooting package, likely for the Infinix Note 12 (X663) Go to product viewer dialog for this item. or a similar variant .

If the firmware version (V686) does not exactly match your current build version, flashing this file can "brick" your device (rendering it unusable).

You cannot flash "Root" files unless your bootloader is already unlocked (this wipes all data).

Rooting and unlocking the bootloader immediately voids most manufacturer warranties.

Instead of downloading pre-made .rar files from the internet, the to root an Infinix X663 Download the Official Stock ROM for your specific build. Extract the boot.img yourself. Patch it using the Magisk App on your phone. Flash the patched file via Fastboot on a PC.