How to Update DoIP Xentry Connect C5 Software

Here’s the detail guide on how to update software of Mercedes Benz DoIP Xentry Connect C5 MB Star diagnostic scanner.  DoIP C5 comes with both internal hard drive and external Dell HDD .


1.The upgrade procedure fits for DoIP Xentry Connect C5 but no SD Connect C5 (SD C4 in C5 case).

2. If you have XDOS 2018.3 or  2017.9 not working well, you should update it to version 2018.7.

If you have XDOS 2018.5 works good, it’s not necessary to update to 2018.7.

3. If you feel complicated to update the firmware by yourself.  You can send both Doip C5 HDD and Dell HDD to us to run an upgrade.

Part 1: How to remove Xentry Connect C5 internal HDD

Part 2: How to update Xentry Connect C5 software

Tools required:

Xentry_Kit_09_2017.iso(copy to the folder:  iodd 2541 _ISO)

U disk with a Windows machine (recommend Bigbaicai WinCE)

IODD 2541 External Encrypted Hard Drive or similar

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Panasonic power adapter

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Xentry Connect C5 multiplexer

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C5 mux in standby mode

connect the Panasonic power adapter to C5

insert IODD 2541 into the USB port on C5

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in a standby mode, press “X” and “√” at the same time, then it will pop up “Start Update?”

(if not, it will pop up “Start XENTRY Connect?”. then, when the prompt disappears, it will display “Start Update?”)

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When you see “Start Update?”, press “√” and Connect C5 will go into the update mode and IODD 2541 will light up

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Press button “5” on IODD 2541 as soon as possible. then, the cross “X” will turn a circle “O”

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what’s displayed on C5:

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It will take 50-55 minutes to finish the upgrade

The system restarts after installation completes

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If your system fail to start, turn off C5 mux and restart again

When C5 starts, take out the hard disk on C5 and install it into the laptop (here: Dell 55220)

Before it, pls install the Windows machine on the U disk

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Press F12 when you see the pop-up “F12 Boot Options”

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Select USB Storage Device and press “Enter”

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Pop up the interface, and select [03] WIN2003 PE Classical

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Go to the PE system and create an user account

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Note that Windows should be located in disk D:

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After path selection, right click on “Create a new admin account” on the left

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User name: C5, Password: abc12345678
(You can have any user name and password you want)

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Click on Ok

Close the application

Turn off the laptop

Take out the disk off the laptop and install it into C5 multiplexer

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Part 3: How to activate Xentry Connect C5 after upgrade

Here’s teamviewer file explaining the step-by-step activation procedure


Files needed to activate C5:

Activation key

2018.7 key

Black list C5

Part 4: How to connect C5 SD connect  with Xentry Tab/Laptop

Here’s example on connecting C5 with Xentry tablet, can be also connected with Dell D630 or Lenovo laptop.

C5 is Standby status when not connect with car
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C5 has 2 USB connectors and round power connector (power by Panasonic power adapter) on left side

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Connect LAN cable and power cable with C5

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Press Power button foe 3 sec to turn on Tab

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Connect Xentry C5 OBD cable and LAN cable

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No car connected. Because it is not connected to vehicle

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Xentry Tab main menu

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Open Xentry Control

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Then come to this interface, wait for the communication

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Xentry is connected with SD C5

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Click on green icon

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Launch Xentry Software

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Run MB Star diagnostic software and start diagnose Mercedes.

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