Updating the Operating System
GRS-1 Operator’s Manual
8-2
OS Installation File
The OS installation file for the Topcon GRS-1 is titled
GMSXWM.ROM. This file must be obtained from Topcon prior to
proceeding.
Copy the OS installation file onto an SD card.
Format Reset
In order to update the OS, perform the following steps to enter the
Version up (operating system update) screen.
1. Disconnect all cables and remove the SD card (if inserted).
2. Power on the GRS-1, and remove the battery while it is powered
on.
3. When the GRS-1 is off, simultaneously hold the ESC and ENT
buttons while pushing the software reset button with the stylus
pen for two or more seconds (Figure 8-1 on page 8-3). The GRS-
1 turns off.
4. Release the buttons.
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