The SPX900 incorporates a 'Memory Protect' feature that, when enabled, prevents accidental over-writing of custom effect settings. Similarly, when custom effect programs are to be saved to RAM, the Memory Protect must first be set to 'OFF.'
Accessing the Memory Protect parameter
- Press the [UTILITY] button until 'MEMORY PROTECT' appears on the top row of the display.
- Press the
button next to the right side of the display to set 'Memory Protect' to 'ON'.
- Press the
button next to the right side of the display to set 'Memory Protect' to 'OFF'.
Reference: Operation Manual, p.28