How to Update Software for OBDSTAR X300 Pro3

OBDSTAR X300 PRO3 key master can update online 1 year for free, and the article will tell you how to update.

How to update software for X300 Pro3?

2.1 Update Tool software installation
Download the update tool and diagnostic software on, double click , then go to the next step:

Step 1:Click “Next” to setup update tool.


Step 2: Click “Next”


Step 3: Click “Next”


Step 4: Click “Finish”


2.2 X300 pro3 Software Updating

After Update Tool installation completed, click the Update Tool software icon on desktop to start the update tools. Operation steps as following:

Step 1:Open update tool

Step 2: Click the source menu, choose the program you want to update, click it and confirm


Step 3: Click and select all the software then click “update”

Step 4: Wait for several minutes then the updating finished


This is from Carkeydeals: Best car key tools for sale website Universal Key Programmer technical support: How to Update Software for OBDSTAR X300 Pro3