Minor bug fix release.
Reformatting the card doesn't work yet, but I've added a first version of repartitioning procedure. It overwrites the MBR and creates a single FAT32-LBA partition with the required number of hidden sectors regardless of the SD card size. You'll need to unplug and replug the device after resizing, Windows should prompt you to format it. After format reselect the device in the loader. This feature won't work for GPT-partitioned cards, for now you have to repartition it with Rufus etc.
You can now use old small SD cards (1GB or less) that have too few hidden sectors, just change its count. The correct number of hidden sectors is 1023 (for the current alternative firmware) or more.
THIS FEATURE IS DESTRUCTIVE for files on the card, is not finished and not fully tested yet, use with caution.