Help Gen 5 Amazon fire tablet stuck on black screen bootloop

[Gen 5 Fire user]

1. Manufacturer - (Amazon)
2. Model - (Unknown || Gen 5)
3. Software version - (I attempted to flash 5.1.2)
4. Specifics of the problem - I attempted to flash 5.1.2 on my device and now it's stuck on a black screened bootloop I followed this tutorial: https://www.youtube.com/watch?v=RQLoH-ahjy4
5. Not rooted

Please help 😢

 

[Dannydet]

https://www.lovemyfire.com/kindle-fire-tablet.html