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August 12, 2020 

Mark LaPlante 
Eastech Flow Controls, Inc 
4250 S 76th St  
Tulsa Ok, 74145 

Dear iTracker users, 

 

In our effort to continually improve the performance and functionality of the iTracker 
we will be releasing firmware updates from time to time. Updates can be installed 
using a Micro SD card. We have recently released update revision 4.2.7.  Any 
iTracker currently using revision 4.1.3 or later can be easily updated in the field or 
office.  

What is new? The 4.2.7 update is not mandatory but does improve the Wi-Fi 
connectivity, add an option to turn off the Wi-Fi timed wakeup greatly extend the 
battery life and improves the reliability of the level readings over turbulent water. To 
update the firmware you will need create a “Update Micro SD card” and follow the 
simple procedure below. 

Making the Updater SD Card 

What you will need to create the iTracker firmware updater SD Card: 

Micro SD card reader.  

Micro SD Card (32GB or smaller is preferred) 

Computer with Windows, Mac, Unix, BSD or Linux operating system. 

To make the iTracker firmware update SD Card, obtain the latest update zip file 
(currently SDCard4.2.7.zip) from Eastech Flow Controls, Inc. or Duke’s Root Control, 
Inc. and copy it to a folder on your computer.  Extract the zip file (SDCard4.2.7.zip). 
Insert an empty Fat 32 formatted Micro SD card into a card reader/writer. Once it 
mounts copy the “WebApp” folder, “Firmware.bin” and “FirmwareVersion.txt” to the 
SD card. Eject the card after the files have been transferred and your updater card is 
ready for use. 

Flow  

Controls, Inc.

SD Card 

 Slot

USB

LED

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