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Unzip the distribution ZIP file, run the “USBDeview” tool as an
administrator.
Unplug the GPS receiver.
Look for the entry “OLIMEX LPC1766 Storage USB Device”,
right-click it and “Uninstall Selected Devices”, answer yes to
‘Do you want to uninstall?” wait 10-seconds and then plug the
GPS receiver back in.
6. Yellow and Green LED’s Flash Once Each Second
If your receiver has both the YELLOW and GREEN LED’s
flash simultaneously, then the internal flash memory
directory block has become corrupted. This is a status
message indicating that the receiver is unable to open or
write to a new file in the 4 GB Flash memory.
Follow these instructions to fix this issue:
Attach the receiver to a computer, it will mount as
a disk drive letter. Note the drive letter. If your
operating system requests that you check the
disk for errors, do so.
Download all of the current files from the receiver
using the iGx tool.
Reformat the receiver using the Windows Explorer
on your computer.
More Information
The receiver is a flash memory drive. Just like a real thumb
drive, the directory block on the flash memory can become
corrupted if the battery dies at the exact moment the
receiver is writing to the occupation file (once every 5
seconds typically) or if the USB cable is removed from a
computer while the receiver is downloading a file, or if the
battery dies while the receiver is attached to a computer.
Just as a USB thumb drive can become corrupted, the
receiver’s memory will suffer the same issue. Sometimes a
‘Checkdisk’ operation will fix this issue, however a drive
format will always fix this issue.
The chance of the battery expiring at the exact same
moment that the receiver is writing occupation to the flash
memory is extremely low: the write occurs once every 5-
seconds (by default) and the write operation is very-very
quick. In addition, the receiver monitors the battery
voltage and automatically closes output files and shuts
