For a full "compatibility" to the original box you would need this chip and the FPGA chip.

This chip is a perfect replacement for the security chip, for this point I can confirm it. If your box was killed, it will need the replacement of the Flash chip as well. If it's alive and working, then the security chip is 1:1 to the Lonrisun, but the FPGA is still necessary to have a 1:1 to Original box.

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