Yamaha n8 Service Manual page 111

2. How to Upgrade the Main Unit Program
Turn on the power while simultaneously holding down the [PREV] key and [MONITOR REMOTE REC BUS] key to enter the
PROGRAM fi rmware writing mode.
When the fi rmware writing mode is started, the topmost LED at the L side of the MASTER LEVEL METER will light.
When the data for upgrading is received in this state, fi rmware writing will start.
The R side of the MASTER LEVEL METER will indicate processing status of fi rmware writing.
Do not turn off the power to the product when the fi rmware is being written.
When the fi rmware writing is completed, normal program will start automatically.
If an error occurs during fi rmware writing, all the LEDs at the R side will fl ash and will not change to normal program. In that case,
repeat the upgrading procedure from scratch.
* Download the upgrading program from the YSISS Home Page.
Firmware writing
OVER
-3
-6
-10
-14
-18
Indicates processing status of firmware writing
-24
-30
-36
-42
-48
-60
L R
n8/n12
111