Let’s cut through the jargon.
Your J730f is now running the Auto Patch U8 firmware. The RMM lock is disabled. J730f U8 Auto Patch Firmware
This creates a critical issue:
However, Samsung introduced a security feature called . If a Samsung device updates its bootloader to a higher binary level (in this case, U8), the device fuses are blown physically on the motherboard. Once the phone "knows" it is on Binary 8, it will refuse to boot if you try to install a firmware package with a lower binary number (like U7 or U6). Let’s cut through the jargon
