Custom units access problem - Ultraviolet

I have an issue loading Ultraviolet.
On the 3.25 firmware version insertion mode, I choose the Ultraviolet file, it’s been “successfully loaded”, but nothing displayed on the screen.

Well, I updated to firmware 4.19, dropped the Violet in the SD card, but the file is absent from the ER’ folder. (though it exists in the SD Card).

Can you please help?

Did you follow the instructions for inserting unit presets at the top of this wiki page?