The Display is Opus A3 Standard Basic (Freescale i.MX35)
The Version of Qt Library Used is 4.8.5

To replace the Qt libraries you need:
-Check the software version on the home screen
- Only if the version is <= 1.5
	1. extract the files App and RequestReboot from the folder relating to the software version previously identified from the "first" folder
	(if you don't use the same version there may be problems)
	2. remove all files in USB Key
	3. copy the two files to a USB stick, inside /upgrade/bin
	4. Turn on the monitor
	5. Insert the Usb key into the USB port
	6. Wait for the end of update message
	7. Remove USB Key
	8. continue with the following instructions
	
-To install the toolkain
	1.	cd /
	2.	sudo tar xzf /path/to/linux-opusa3-2.0.3/toolchain/tc_arm_gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12-1.tar.gz
	3.	Enter your password
	This will extract the contents of the archive to /opt

-To install rootfs
	1. mkdir -p ~/roots_folder
	2. cd ~/roots_folder
	3. sudo tar –xvzf ~/Desktop/rootfs-opusa3-2.2.6.tar.gz
	4. Enter your password	
	5. Now the OPUS A3 rootfs is installed in ~/roots_folder
	
-To Install the Qt SDK (if you need it)
	1. cd /path/to/SDK/
	2. chmod +x /patch/where/SDK/is/located/qt-sdk-linux-x86-opensource-2009.04.1.bin
	3. ./qt-sdk-linux-x86-opensource-2009.04.1.bin
	4.	Enter your password	
	
	
-compile the libraries, inside the compressed file you will find the compiler, the toolchain, the rootfs, the SDK;
	The original Qt libraries are contained in "rootfs-opusa3-2.2.6.tar.gz" inside the /usr/local/Qt/lib folder)
	Maybe you can find some compilation tips in this file "littleHelpForCompiling.pdf" (https://embeddeduse.com/2016/02/05/running-a-qml-hmi-on-an-arm11-without-opengl/)
-remove all files in USB Key
-copy the new compiled libraries onto a USB key inside the /upgrade/Qt/lib folder
-Turn on the monitor
-Insert the Usb key into the USB port
-Wait for the end of update message
-Remove USB Key
-Reboot system

