Weymouth Speed Week 2010 - GT31 Settings

First ensure your GT31 is using firmware version 1.3 or higher see http://mtbest.net/setting-up-navi-GT31.htm for firmware download, instructions and lots of useful information.

If you are new to the GT31 this very simple guide to using the navigation may help:

• After the unit has turned on and found the SD card,

• Brief touch of the power on/off to bring up the menu headings,

• Left and right on the thumb ‘joystick’ to scroll through the menu headings,

• Click the joystick to make the items within a menu heading appear,

• Then scroll up/down and click to select a specific sub menu item,

• And scroll to select the preferred value,

• A brief touch of the power on/off will back you out of menu items and menus.

Firmware upgrade instructions copied from Dr Tom Chalko (http://mtbest.net/setting-up-navi-GT31.htm)

1. Download the appriopriate ZIP file, you need to "unzip" the content. The file with extension *.s is the firmware. V1.4 firmware has two *.s files, one firmware file and a GT31boot file. After unzipping, please read README and UPDATE-INSTRUCTIONS files.
2. Install GT31Updater V0.71 or higher software, if not already installed (it is included in zip archive)
3. Install USB-serial driver from GT31 CD, if not already installed. The driver is necessary to communicate with GT31.
4. Clear GT31 Data Logger (DATA LOGGER>CLEAR>YES)
5. Turn your GT31 OFF
6. Remove the SD card and find a tiny sliding switch "inside the card slot" on the pcb, on "display side" of the card slot. The switch has a black lever and metallic body. The default position of the switch lever is labelled in white on pcb. The pictures show the switch and the white line on the pcb outlining the default position.

7. Slide the switch lever using a match or a similar object away from the white mark
8. As a precaution, exit all Windows applications and disconect from Internet. Run GT31Updater V0.71 (or later). Select the correct COM port from the pop-up menu and choose "INTERNAL" mode. Then use "browse" function to select and load 2 files that you unzipped in step 1, one at a time:
   a) V31BOOT_V4D.s (you only need to update this when upgrading to V1.4 from lower V versions)
   b) V1.4 firmware
It may be necessary to quit and re-start GT31 Upgrader V0.71 after the first file update.
9. When Updater finishes, disconnect GT31 from USB cable, move the switch lever to its normal position, labelled white on pcb. Your GT31 should be ready to use. Power it ON, go to Settings and select Version. You should see the Version Number corresponding to the name of the file in step 1 and 8b.

If you experience any difficulty please contact Nick Povey.