How to solve “Can’t find VVDI2” error after update?

VVDI2 latest version is V4.0.0. And we received feedback that after update vvdi2 firmware,and then use the VVDI2,but it shows the error that “Error-Can’t find vvdi2,reconnect VVDI2 and try again” like the following pic shows:


Then we found the software and firmware version is not matched.

From the Pic,the software is V3.0.2,but the firmware is V4.0.0.


Please use xhorse updata kit software update ro newest firmware,then install V4.0.0 VVDI2 software,it will be OK.

All our Xhorse tools software and firmware please keep matched,and needs to use the newest software version.

VVDI2 Key Programmer V4.0.0 Update (2017-03-02 Require firmware V4.0.0)
VAG V4.0.0
1. BCM2 Dump Tool:
(1). Support data read by VVDI-PROG
(2). Support generate BCM2 immodata, it can use to make new key, learn key
(3). Checksum fix for 95320 EEPROM dump
2. Fixbug for old A6/Q7 J518 read EEPROM bug
3. Bugfix
BMW V4.0.0
1. Improvement for read CAS1, CAS2 EEPROM with CAS PLUG
2. Bugfix
Transponder Programmer V4.0.0
1. Immobilizer data tool: Chevrolet Epica 2003 (1K20C) bugfix
2. Immobilizer data tool: VW Beetle 1998-912 bugfix
3. Immobilizer data tool: SaicMotor MG3 add remote start
4. Bugfix