In this video, I show how to flash a new version of firmware onto the pico-mac-nano and then boot up from a custom disk image stored on a micro-SD card. The new firmware I use has been built with the 208K memory option providing 208KB of memory to the Macintosh emulator rather than the 128KB that the original Macintosh had. The disk image I download is one I created with some additional applications and games. Putting the disk image file on an SD card not only allows pico-mac to boot from it, but the disk image remains writable which MacPaint requires. Both files can be downloaded from the pico-mac-nano GitHub repository :