Default [HELP] How to downgrade hboot

Hello I have supercid, s-off and previously flashed MAXIMUSHD ROM and that's on hboot 2.16 so I got board and sick of sense 5 and I want to try out one of the kitkat ROMs but I need hboot 2.15 for that and yes I know that there are hboot 2.16 kitkat roms but they are unstable so can someone tell me step by step how to downgrade hboot 2.16 to 2.15 because I'm quite of a dumb person

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