: Locate the small SD slot and eject the card.
The following solutions address the most frequent reasons for this error, ranging from simple SD card corruption to more complex hardware repairs. 1. MicroSD/TF Card Corruption or Failure
: Go to Windows Device Manager, locate the USB Device (Maurycy/Alientech) , uninstall it, unplug the device, and plug it back in to let KSuite reinstall the drivers.
Selecting an incompatible ECU model. How to Fix "KESS V2 Protocol Not Found" (Step-by-Step) 1. Fix the MicroSD Card (Most Successful Method)
If the KSuite software cannot properly identify the hardware firmware version, it will gray out options or throw a protocol error.
For detailed visual instructions on rewriting the SD card, you can view this repair guide on YouTube .
Using a newer version of KSuite with older hardware firmware (or vice versa) often gray-out options or triggers this error.
: Check for "cold" or loose solder joints on the main NXP chip. Reflowing these pins with a fine-tip iron often restores protocol recognition. Change the USB Cable
When K-Suite displays "Protocol Not Found" or shows greyed-out protocols, it means the software has failed a security or identification check with the master device.
Tune safely, and always keep a backup of your original file.
To prevent the "Protocol Not Found" error from returning, follow these best practices during your tuning sessions:
Carefully open the KESS device to access the printed circuit board (PCB). Locate the SD Card: Locate the TF card slot and remove it.
Download the necessary protocol files (often provided by sellers or forums like those found on obdexpress ).
: Locate the small SD slot and eject the card.
The following solutions address the most frequent reasons for this error, ranging from simple SD card corruption to more complex hardware repairs. 1. MicroSD/TF Card Corruption or Failure
: Go to Windows Device Manager, locate the USB Device (Maurycy/Alientech) , uninstall it, unplug the device, and plug it back in to let KSuite reinstall the drivers.
Selecting an incompatible ECU model. How to Fix "KESS V2 Protocol Not Found" (Step-by-Step) 1. Fix the MicroSD Card (Most Successful Method) kess v2 protocol not found
If the KSuite software cannot properly identify the hardware firmware version, it will gray out options or throw a protocol error.
For detailed visual instructions on rewriting the SD card, you can view this repair guide on YouTube .
Using a newer version of KSuite with older hardware firmware (or vice versa) often gray-out options or triggers this error. : Locate the small SD slot and eject the card
: Check for "cold" or loose solder joints on the main NXP chip. Reflowing these pins with a fine-tip iron often restores protocol recognition. Change the USB Cable
When K-Suite displays "Protocol Not Found" or shows greyed-out protocols, it means the software has failed a security or identification check with the master device.
Tune safely, and always keep a backup of your original file. MicroSD/TF Card Corruption or Failure : Go to
To prevent the "Protocol Not Found" error from returning, follow these best practices during your tuning sessions:
Carefully open the KESS device to access the printed circuit board (PCB). Locate the SD Card: Locate the TF card slot and remove it.
Download the necessary protocol files (often provided by sellers or forums like those found on obdexpress ).
