Yamaha Acoustic User Manual page 21

Up to 12 characters can be used in a patch name.
* Only 11 characters are displayed when the USB connection is used.
r
After you've changed the name, press the [STORE/EXIT] button.
The MAGICSTOMP is now in store standby mode.
t
Press and hold the [STORE/EXIT] button (about 1 second) until "NOW STOR-
ING..." appears in the display.
The new patch name is stored with the patch.
Press and hold
* To cancel the patch name edit operation, press and quickly release the [STORE/EXIT] button (within 1
second) and the MAGICSTOMP returns to its original condition (the patch name returns to its original
name). Other than the patch name, any changes made to parameter data will be safe until another patch is
selected.
Giving the patch a name
Changing the patch name is complete.
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