PoGo Products PRY900M2 - Manual (Page 37)

RYW Explorer
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7) Initializing the Flash Memory
Just like formatting a hard disk, you may initializ (format) the memory used
in RADIO YourWay
TM . If you format the flash memory, all data stored in the
memory will be lost.
Select File Flash Memory Format in the menu of RADIO YourWay TM .
When a pop-up window prompting you to format appears, click the OK
button and the formatting will be initiated.
If you right click the mouse on any empty space in the flash memory
managing window, you will see this Flash Memory Format command.
This command also can be used to format the internal flash memory.