HELP! Phone stuck in infinite boot loop, how can I save it?

[AC Question]

HELP! Phone stuck in infinite boot loop

Phone screen says:

ODIN MODE
PRODUCT NAME: SM-N00P
CURRENT BINARY: Custom
SYSTEM STATUS: Custom
KNOX WARRANTY VOID: 0x1 (4)
QUALCOMM SECUREBOOT: ENABLE (CSB) AP SWREV: S1, T1, A1, A3, P1
SECURE DOWNLOAD: ENABLE
UDC START

And then Downloading...don't turn off target