Since the eFuse lives directly on the processor, replacing the entire logic board swaps the blown eFuse out for a factory-fresh, unblown one. If your phone requires a motherboard replacement for a completely unrelated hardware failure (like a dead charging controller or power management IC), the authorized repair center will install a new board, which inherently resets your Knox status to 0x0. Summary of Best Practices for Modders

: Indicates that an unofficial boot image, custom recovery (like TWRP), or root exploit was detected.