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How to update Kess v3.099 to Kess v5.028

Kess v2 version 3.099 to 5.028 update tutorial – This topic is for information and educational purpose only.

(Big thanks to kitnoos2002 )


Pics from Russian KESS 5.028.

Kess V2 5.028 Adds 53 New Protocols + Updated 257 Protocols


Kess 5.028 from 16pin.
I reworked the SD card on a genuine Sandisk Ultra.





Here are high resolution pictures from 16pin KESS 5.028

For now I only changed the SD card.


PCB is good.

I have already changed SD card with a Sandisk.
I will change some transistors PD with A6C.
I will change all China capacitors with Panasonic capacitors.
I think buzzer is useless but I have a spare buzzer muRata here.


Kess 5.028 PCB naked VS reworked : 


Examples of genuine parts VS Kess clone parts : 


I advise to rework it like all China Kess.
For now it work well with all protocols tested, like Kess v2 5.017.
I have not tested Virtual Read.

Some people have suddenly had their SD card corrupted, so I would recommend to make a backup of the original SD card before using the Kess.

You can make a backup with the software “ImageUSB”

If at insertion the computer ask to format the SD card, don’t format it !!!


Note that, 16pin just updates Chinese Kess v3.099 to v5.028 but they are not reworked.



I continue to make my interface more reliable with Ksuite 2.47 that I modded to start with Kess v25.028 (or Kess v2 5.017).
Works perfectly and without USB dongle.

The benefits are many checksums and bugs corrected.


5.028 + Ksuite 2.34 don’t support unlock PCR 2.1 through OBD
But 5.028 + Ksuite 2.47 maybe support unlock PCR 2.1 through OBD

(I have not personally tested unlock PCR 2.1 through OBD).


4.036 good china clone is confirmed to be able to to unlock PCR 2.1
5.017 + Ksuite 2.47 should have good luck with PCR 2.1 unlock


Kess v2 unlocks PCR 2.1 details:


07:16 Publié dans Car ECU programmer | Tags : kess v2 | Lien permanent | Commentaires (0)


Kess V2 (red board) reviews from a real professional

A lot of Kess V2 (red board) reviews and ideas from a real professional @euromod:


... just observe the pcb and random choose some parts on Kess V2 red board , then search them on tme / farnell / etc and also search for the same part on alibaba or similar china site. you will see different markings , labels of the clone parts .... and .... prices

but you already know that , I`m sure ...

here are some examples ,

in green fake , SK14


in green fake UL46


in green fake 27E diode


left side , fake 5V voltage regulator,


in green , fake 3.3V voltage regulator. in this picture you can observe also the genuine ST L9613B Kline interface


other genuine parts mounted

 fake-kess-v2-red-2 fake-kess-v2-red-8

genuine Murata oscillator (on PCB) vs fake one


I have on another PC all the comparative photos because I used to rework this units.

.... anyway I will stop here because it`s a waste of time debating on this subject.

if you state that those clones are made with genuine parts (or the cloned parts are working like the genuine ones) I have no problem with that


Edit to update: just search for the parts I posted , fake Murata logo , fake ST logo , fake Texas Instruments logo.

mate , please feel free to send one of those parts via post mail to the original producer and you will have the right answer....

... as with all clones from opcom to ktag I don`t trust nobody and when possible I replace all parts with good parts from a good brand and trusted part supplier trying to minimize potential problems.

you defend the low cost parts saying also that those parts are not illegal ...

.... how about the clones build from these parts? are they legal?

on the other hand just do an firmware upgrade on this , and you will see how genuine is ....


and the genuine unit cost 10 euros ... (more then the whole cinese opcom , factory price is 2$ if you buy more. they can put your name on the IC , no problem)

the genuine part:




Credits to euromod


Reliable source to get Kess V2 red:

08:53 Publié dans car diagnosis tool | Tags : kess v2 | Lien permanent | Commentaires (0)


C72, D6 and D7 Components: Which is best for Kess V2 5.017?

KESS V2 5.017 PCB has several versions of the components.

C72, D6 and D7 Which one is good?


Here you go.


C72 components on KESS V2 5.017 main board:


D6 and D7 on KESS V2 5.017 board:


Kess V2 5.017 Red PCB Component Rework:




KESS V2 5.017 PCB from

se137-c1-kess-v2-5.017-NEW-pcb-1.jpeg   se137-c1-kess-v2-5.017-NEW-pcb-    se137-c1-kess-v2-5.017-NEW-pcb-8



Note that Kess v2 red board is the newest version. It’s improved a lot, based on the other old versions. Look here: Kess v2 .017 review:


11:08 Publié dans Car ECU programmer | Tags : kess v2 | Lien permanent | Commentaires (0)