Orion SIRIUS 9995 - Manual (Page 18)

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base, but the hardware version will not change with internet
updates).
Note: If the error message “Can not connect to a SynScan
hand control” appears on your computer, check all cable con-
nections. Also, try closing all other computer programs that
might be attempting to use the COM port.
Note: If the error message “Firmware update failed...” appears
on your computer, remove the power plug from the hand con-
troller, and then reconnect it. Now, repeat the firmware update
procedure.
By default, the data communication rate between the GoTo
hand controller and the computer is 115kbps. The RS-232
port on some PCs may not support this high data transfer
rate. If the firmware update procedure fails after a few tries,
try reducing the data transfer rate by pressing the
SETUP but-
ton on the hand controller. This will reduce the data transfer
rate to 9.6kbps. The controller’s LCD screen will show “Lo” in
the lower right hand corner to indicate the lower transfer rate
setting. The firmware update procedure remains the same
except it will take much longer for the firmware to load into the
hand controller.