Version 0.3 was mostly rewritten, adding support for USB Drives that can be connected to the native USB port via OTG cable. If no SD Card is found, we check for a connected USB Drive. USB and SD drives can be hot swapped.
Menus were restructured, and menu commands were changed (sorry about that). There is no longer a confirmation required for any operation, making it very easy to erase or overwrite a ROM with one keypress.
Pins are now set to inputs with a pullup after every operation, making an accidental removal of a ROM card without powering down less harmful for the card.
Version 0.2 is obsolete.
The initial version is 0.1 which can erase, write, and verify the first ROM block and supports SD Cards.