LAUNCH X431 PRO3 FAQ

Posted 2020-12-07 obd2tool

List most Launch X431 Pro3 Frequently Asked Questions.

1. Error -5 (new adapters)
Most likely your device uses the new security and work with it just do not happen, but you can try the following system:
1). If you should roll back its firmware 11.54 to version 11.52 (as flashing the adapter, see the section №4)
2). Turn off the Internet connection on the tablet / computer
3). Start the original application EasyDiag LAUNCH
4). Perform the connection to the vehicle via any program, for example OBD2TOOL (this is necessary to initialize the adapter)
5). Close the original application EasyDiag LAUNCH
6). Run PRO application
7). Perform n Connecting to the vehicle
– Use the brand until June 2017.
– On some adapters “focus” can not ride in this case is to use only original software

2. When you run any program there is a message ?Realy Quit?
– It is necessary to update the adapter firmware is flash read in paragraph №4

3. Stamps are downloaded with an empty license file (LICENSE.DAT = 0 KB)
1). Try to install the application and download the brand through:
– For EasyDiag: easydiag.apk (26.19 MB Download now)
– For MDiag: m-diag.apk (27.09 MB Download now)

2). Sign up on the website and download the LAUNCH brand from-to:
mycar. x431.com

3). apply power to the adapter, run the original application, the Internet on your tablet / smartphone must be turned on after connecting with the adapter program to overwrite the normal size of the license file

– If you have bought a new device and none of the above does not help feel free to contact provider apparatus with a claim to idle yc roystvo

4. How to flash adapter

To update the firmware on the shell X431 Pro3S 3.10.020 You will need:
1). Download the correct firmware: Archive of firmware (2.22 MB Download now)
2). Copy the firmware to your tablet / smartphone at
?cnlauncn / X431Pro3S / 968 ******** * / the DIAGNOSTIC / the Configure / Download ?
3). In? Download ?will be based on two files? Download.bin ?and? download.ini ?folder
4). Launch X431 Pro3S application
5). The application, press Menu -> About -> firmware Restoration software
6). In the menu Restore firmware, press the red button “Restore firmware”
– Before the beginning of the firmware, check the charge battery on your tablet / phone
– If the firmware procedure on the adapter must be powered
– 968 ********* is the serial number of your adapter
– An example is given for the shell Launch X431 Scan Tool Pro3S 3.10.020, in other shells path to the firmware file may be different

5. When you start the brand message Disaccording between the software serial No and smartbox serial No ….
Possible causes:
– Not a patch applied correctly
Invalid license file –

6. The shell does not see brands
Possible causes:
– Stamps copied down the wrong path , for example: for the shell X431 Pro3S 3.10.020 way for brands to be next:
cnlauncn / X431Pro3S / 968 ********* / DIAGNOSTIC / VEHICLES

In VEHICLES folder must lie folders trademarks, AUDI, BMW, RENAULT, etc.

– ********* folder 968 with the serial number of your device
– a folder cnlauncn be radically your tablet / smartphone filesystem

7. The computer does not see when connecting cnlaunch folder
1). Copy the folder cnlaunch to the SD card directly from the device using any file manager, eg Total Commander, then copy from the SD card to a computer
2). Create a copy of the folder cnlaunch directly from the device using any file manager, eg Total Commander, when it uses the new folder name, a new folder will be visible from your computer
3). Add cnlaunch folder to the archive directly from the device using any archiver, for example RAR, an archive will be visible to the computer
4). The most reliable method. Install the plug-in for Commander of Total All android the ADB and work with the root file system of your device without restrictions

8. PRO application does not run on your phone / tablet, the original application is working properly
– Please update your smartphone / tablet firmware (on some devices do not start never)
Most becproblemnye smarfony / tablet – Samsung