It's not like getting a tattoo. Can be flashed back. If you bought any of their DENAFRIPS dacs new, from Vinshine, you would have received an email of the firmware offer. Even if you bought it used, they will provide you with the update instructions. Contact Alvin at Vinshineaudio.com. Very pleasant man. Yes, search & read, too.
I happen to enjoy the update but I've also added a new preamp, and an Iris DDC to the music mix.