PLEASE HELP. HABIB to REBUG. is it possible? newbie (solved)

i. im currently usin habib 4.78 cobra 7.3 compatible. CFW 4.75/4.78 ( kinda confused because i checked on xmb system info firmware is 4.75 buton multiman it is 4.78) can i upgrade to rebug 4.80.1 directly or do i need to downgrade it again?

i want to play nba 2k17 but it says i need to update system.

thanks in advance