Help! Fastboot help please! topic

Sorry, not trying to spam but i wrote over my last thread. Anyway i need to get into fast boot on my kfhd 7 without a cable or fireflash. Is there an adb tool or fastboot tool, or adb command, ANYWHERE?
SPECS/CONDITION:
FireOS 7.5.1
Root? ROOTED
Custom Recovery? None
Additional details:
Soft bricked / stuck in boot loop, tried to change the launcher via actually pasting apex over the stock launcher in file explorer+root addon.

PC:
Windows 8
ADB? Yes
Fastboot drivers? YES
Determination? Yes.

please provide a download link, but if you vant its fine. Any help accepted
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