Boss br900cd factory defaults re install

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1. Press [UTILITY].
2. Press CURSOR [ ] [ ] to move the cursor to "INI,"
and press [ENTER].
3. Press PARAMETER CURSOR [ ] [ ] to move the
cursor to "ALL," and press [ENTER].
The confirmation message "Are you sure?" appears in
the display.
4. To continue the initialization, press [ENTER] (YES).
To cancel, press [EXIT] (NO) (or [UTILITY]).
When [ENTER] is pressed, initialization begins.
After the initialization has been completed, you are
returned to the Play screen.
You can perform the same initialization with "INIT
ALL," by holding down INPUT SELECT [GUITAR/
BASS/MIC2], [MIC], and [LINE] while turning the
POWER switch ON, then pressing [ENTER].