Sundance SMT6001 - Manual (Page 9)

3.6.4 Booting from ROM
Programming an executable program or a Diamond application into a user area will
result in the first such area being noted as the "boot area", the place to boot from
following reset. The summary of the ROM's contents in the top right window will
show that area as being "(Boot area: Enabled)".
If the first appropriate user area is disabled (see 3.6.5 ) and marked as "(Boot area:
Disabled)", you can enable it by clicking on the entry in the list of areas and then
clicking the "Enable" button to the right of the list.
3.6.5 Preventing booting from ROM
If a user area has been enabled (see 3.6.4 ) and marked as "(Boot area: Enabled)",
you can prevent it from being executed on reset by clicking on the entry in the list of
areas, clicking the "Disable" button to the right of the list, and then programming the
changes by clicking "Program Flash". This does not remove the area, but simply
stops the bootloader from loading it. Loading will be done from comport as usual.