Solved! SVCI 2020 2019 Interface Not Connected Error

Problem:

When install svci 2020 software on Win7 32bit system, it failed to load software and gave error:

“Connection Error: Interface not connected!
If you have already connected the interface, please try to reconnect it and restart the application.
The interface should be connected with a car. ”

Svci 2020 Interface Not Connected Error

Possible reason:

The usb driver is not compatible with windows system.

This problem will not occur if you install svci 2019 or svci 2020 software in win10 64bit professional.

The main reason is that the USB driver version is too low. By default, v2.12.28 version driver will be installed in the system, but this version driver cannot be successfully installed due to system reasons.

The solution is to update the USB drive v2.8.24 to v2.12.28.

Download

USB driver v2.12.28-x86

USB driver v2.12.28-x64

 

Detail procedure:

Svci 2020 Interface Not Connected Solution 1

Download USB FTDI v2.12.28 driver above and extract to desktop

1. Update USB Serial Port COM4 & COM5

Svci 2020 Interface Not Connected Solution 2
Go to computer device manager to check USB driver version
Right click on USB Serial Port COM4-Property

Svci 2020 Interface Not Connected Solution 4

COM4 USB driver version is too low

Svci 2020 Interface Not Connected Solution 5
Right click COM4 to select Search for the driver software on your computer

Svci 2020 Interface Not Connected Solution 6

Svci 2020 Interface Not Connected Solution 7
Choose driver software destination folder, replace COM4 FTDI driver in C:Users/Desktop/CDM v2.12.28 WHQL Certified_X64/ftdiport

Svci 2020 Interface Not Connected Solution 8

Svci 2020 Interface Not Connected Solution 9

Update COM4 Port driver succeed

Svci 2020 Interface Not Connected Solution 10

COM4 driver update to 2.12.28.0

Follow same step to update COM5 USB driver

Svci 2020 Interface Not Connected Solution 11

Svci 2020 Interface Not Connected Solution 12

2. Update USB Serial Converter A & B

Svci 2020 Interface Not Connected Solution 13

In Device manager, we need also update Controller USB (Universal Serial Bus). Update USB Serial Converter A and USB Serial Converter B

Svci 2020 Interface Not Connected Solution 14
USB Serial Converter A version is too low

Right click to select Search for the driver software on your computer

Svci 2020 Interface Not Connected Solution 15

Choose to install and replace driver in C:Users/Desktop/CDM v2.12.28 WHQL Certified_X64/ftdibus

Svci 2020 Interface Not Connected Solution 16

Update USB Serial Converter A driver succeed

Svci 2020 Interface Not Connected Solution 17

Svci 2020 Interface Not Connected Solution 18

Follow same step to update USB Serial Converter B

Svci 2020 Interface Not Connected Solution 19

Now SVCI 2020 software is ready to use.

Svci 2020 Interface Not Connected Solution 20

 

SVCI 2020/2019 some other common errors & solutions 

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