At boot, you get the first project on the disk
<PROJECT> <- Remount, -> Select
You use up and down to scroll through the projects. If you go left, the power for the SD slot is turned off and you get:
Insert SD card -> when ready
Click right and you go back to the beginning.
After picking a project and clicking right, you get
<PROJECT> <- or -> last:NONE
This is telling you you can use the left button to go back to the selection menu, or right to start an operation with this project. last:NONE is telling you that the result of the last operation is undefined.
Click right and the operation begins:
SECTION: FLASH WRITE ***
The bottom row is a progress indicator for each sub-task. In general, you can expect first a chip erase operation, then the fuses are set and verified, then flash and lastly EEPROM.
At the end, you go back to the previous screen, with "last:GOOD" instead of NONE, assuming there were no errors. If there were, it would be "last:BAD"
If there are errors, the error is shown and the screen paused for a second before going back with "last:BAD"