Ah, ForeFlight (uAvionix cough cough) sure knows how to restrict your freedom when it comes to upgrading or downgrading your Sentry firmware.
But fear not, for Uncle Dimme is here to save the day!
By the way, I strongly advise against using any of these files for any purpose. I cannot accept any responsibility whatsoever… Seriously, I won’t take any blame.
Oh, and if you’re not a fan of the filenames, remember to direct your frustrations towards Alonzo!