Microchip Technology GPS-2700, User Manual

Page: 65 / 77

GPS-2700 USER’S GUIDE
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2020 Microchip Technology Inc. DS50003016A-page 65
Chapter 4. Firmware Upgrade Instructions
4.1 INTRODUCTION
The following is a short tutorial on how to upgrade the GPS-2700 firmware. Please
follow the instructions in order to prevent corrupting the GPS-2700 Flash, which may
require reflashing at the factory.
With some practice, the entire Flash upgrade can be done in less than one minute,
even though the following seems like a fairly long list of instructions.
4.2 ISP FLASH LOADER UTILITY INSTALLATION
Microchip Technology Inc. recommends using the Flash Magic utility to upgrade the
contents of Flash memory on the GPS-2700. It is available for download on the Flash
Magic website: http://www.flashmagictool.com/
Follow the directions given on the website for installing the utility on your computer.
Note: The Philips LPC2000 utility that is used on legacy products will not support
the newer LPC2368 processor used on the GPS-2700.
4.3 PUTTING THE PCB INTO IN-CIRCUIT PROGRAMMING (ISP) MODE
Momentarily short-out pins 1 and 2 of header J2 using a jumper or other conductive
material during power-on (See
Figure 4-1 ). Both LED’s should remain off, indicating the
unit is properly placed into ISP mode. If the LED’s light up after power-on, the unit is
not in ISP mode.
Short out pins 1 and 2
of J2 prior to power
on.
FIGURE 4-1: Location of Header J2.