Yamaha SIGMA-G5SII Service Information page 266

(8) Network Installation Communication
The machine software is installed through the network.
(*Before the installation, make sure to backup the data of the machine software.
Because the network installation might affect the machine seriously, perform it
carefully.)

Network Installation Procedure
① Backup the machine using the NT-100 system software.
For the machines connected to LISA, communicate each of them to backup.
② Send the software from the NT-100 system software to the machine.
The software can be sent to all the machines connected to LISA at once.
(However, at present, only Sigma F8 and Sigma G-5 are applicable. Sigma G5S
is not applicable).
③ When the transmission is completed, a message
installation ] ready
Service Information
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is displayed in the machine front side.
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It is [ machine software /