[Q] Kfhd 7 bootloop... topic

Hey guys im kinda new to this forum. i came here cuz im having a problem with installing a 2nd bootloader on my kfhd 7. i rolled back the version to 7.2.3 and then attempted to install twrp via cmd prompt and tru fireflash. both method resulted in a bootloop with no blue logo. it appears to me as if the processes corrupt the boot file thus causing the bootloop. i restored the kindle with KFHD SRT v1.3.0 and attempted these processes again. as we say in Trinidad and Tobago... FAILIAR (Fail-e-ah)...lol...any help would be appreciated...