Auf selbigem PC läuft übrigens seit heute (wieder) Windows 10, wobei das Update-Tool sich diesmal nicht – wie noch letztes Jahr, s. o. – an den Hardware-Anforderungen verschluckte. Und oh Wunder: Der UEFI-Eintrag des parallel installierten Linux blieb diesmal von Microsoft unangetastet! Brav(o), Redmond!
Note that if you have any previous v3.00 build already installed, you only need to copy UPDATE.ROM to the /POWERPAK folder on your CF card, start up your PowerPak, go to the settings menu, and select "Check for firmware update." After the upgrade flashing procedure has finished (i.e., the PowerPak intro screen appears), power-cycle your SNES just to be sure, and you're all set.
Changes since v3.00 (build #11310):
merged all file browsing routines (there were 4 by now) into a single subroutine, this makes future additions/corrections to the file browser much easier
rewrote page-by-page navigation, you can now flip through the "pages" of a directory indefinitely (i.e., no forced "stop" at the beginning and end of the file listing)
added feature: when you return to a directory's parent directory, the cursor will automatically be placed on the subdirectory you left for convenience. Caveat: The stack is used to preserve the necessary data (8 bytes per directory), so the amount of subfolder levels is limited (still well over 500 though ... )
added a file size check to the directory loading routine, 0-byte files are skipped now instead of producing a CF card error
added ikari's fix for Soul Blazer intro music
fixed a DMA issue causing problems (at least) with Bust-a-Move/Puzzle Bobble, King of Dragons, and Super Mario Allstars & World
fixed a potentially critical bug related to accumulator size in the same routine (SDRAM buffering portion)
added a hint to the settings menu alerting the user to return there and save the settings after selecting a new theme
On a side note, the source code is available on GitHub as well, so if you should encounter any potential bugs, feel free to open an issue there, and I'll look into it ASAP.