Unofficial SNES PowerPak firmware v2.00
This release contains a fully automated flash updater - no need for an external programming device anymore. 
Just copy the contents of the "POWERPAK" directory from the archive root onto your CF card, power on your SNES, and you'll be prompted to update. More info (and disclaimer) on the all-new SNES PowerPak firmware page.
Video of the flashing procedure (made by mi213)
(ROM loading issues toward the end are likely card-related, BTW.)
Download:
Unofficial SNES PowerPak firmware v2.00 (source included)
Just copy the contents of the "POWERPAK" directory from the archive root onto your CF card, power on your SNES, and you'll be prompted to update. More info (and disclaimer) on the all-new SNES PowerPak firmware page.Video of the flashing procedure (made by mi213)
(ROM loading issues toward the end are likely card-related, BTW.)
Download:
Unofficial SNES PowerPak firmware v2.00 (source included)