How to update OBDSTAR X300 PRO3 Key Master

When you get the OBDSTAR X300 PRO3 Key Master, you have check if the package have opened all the full authorize,

Full Package Configuration:
Immobiliser + Odometer Adjustment +EEPROM/PIC+OBDII+EPB+Oil/Service reset+Battery matching

you can use the SN number enter the official website check, and update software to the newest version.

Step 1:

Remove the TF card from your device. Insert your TF card into computer. Format your TF card and ensure it is empty.


Step 2:

Login our website,and click “One Key upgrade”


Download and install the “One Key upgrade”. You will see this software.



Open the “one key upgrade”. Input your username and password. Then select “End User” and click “Log in”


Step5:  Input your S/N


Step 6: Select all and click “Upgrade”


Step 7: Upgrade is completed



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