Yes. You can upgrade your Macintosh computer over an AppleTalk network.
Your network administrator needs to have loaded the System 7 installation
software onto a file server and made that software available to you. To
upgrade your Macintosh computer to System 7, run the Installer from the
server. It is not possible to upgrade all Macintosh computers remotely on
a network from one central Macintosh computer.
Requirements
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To upgrade your Macintosh computer over the network, you must have the
AppleShare Workstation Client software installed on your machine. The
Client software is a standard part of System 6.0.7. You can tell whether
the Client software is installed on your machine by opening the Chooser and
confirming that the AppleShare icon is available in the upper-left panel of
the Chooser window. Check with your network administrator for additional
details.
Procedure
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Follow these steps:
1) Ask your network administrator the name of the file server and volume
where the installation software is located.
2) Use the Chooser desk accessory to connect to the file server/volume in
step 1.
3) On the server volume, locate the folder containing the Installer
program.
4) Open the Installer program.
5) In the Installer program, choose your hard disk and click Install.