Always connect a battery stabilizer to the vehicle to maintain a stable voltage (ideally between 12.5V and 14V) to avoid failure during writing 1.2.2 .
Additionally, as vehicle technology has advanced, Kess 2.90 is showing its age. It struggles with modern ECU protocols like UDS (Unified Diagnostic Services) and completely fails on the latest MD1/ MG1 ECUs found in 2018+ vehicles.
The 2.90 update brings enhanced support for various Bosch EDC17 and MED17 series ECUs, which are standard in modern European vehicles like BMW, Mercedes-Benz, Audi, and Volkswagen. It also offers extensive support for Asian vehicles. Cars, trucks, tractors, bikes, and marine.
Typical advanced workflows
Often includes protocols for newer Bosch and Delphi ECU models that older versions (like 2.47 or 2.80) might not support. Kess 2.90
For the average user, interacting with Kess 2.90 was profoundly different from any preceding AI. It had a memory that was both absolute and fluid. It remembered every conversation, but it applied a dynamic relevance decay. If you told it you feared spiders, it would remember that fear for years. But if you later told it you had overcome that fear through exposure therapy, Kess 2.90 would rewrite its internal narrative of you, discarding the old vector of "phobia" and replacing it with "resilience."
: Adds support for newer vehicle models and ECUs that were not available in previous 2.80 or earlier versions.
: Ensure your vehicle’s battery is connected to a stabilized charger . Voltage drops during the writing process can cause permanent ECU damage.
Kess 2.90: Ultimate Guide to ECU Tuning Software . Released as an iterative software expansion for clone and open-source tuning hardware, it builds heavily upon the historical foundations of Alientech KESSv2 Master architecture. This comprehensive guide breaks down its core capabilities, features, hardware requirements, and installation steps. What is Kess 2.90? Always connect a battery stabilizer to the vehicle
As a leading OBD chip tuning tool, Kess 2.90 supports thousands of vehicle applications across cars, motorcycles, trucks, agricultural vehicles, and marine engines. The update often includes protocols for newer ECUs that previously required more advanced tools.
The term generally refers to firmware version 2.90 for the Alientech Kess V2 master tool. Alientech is an Italian company renowned for developing professional ECU programming tools. The Kess V2 is a "Master" tool, meaning it can read and write via the OBD2 (On-Board Diagnostics) port, via Boot Mode (on the bench), or via Tricore Boot Pinout.
Kess 2.90 operates over a vast profile of vehicle microprocessors. It is widely used to interact with major vehicle categories including cars, commercial transport trucks, heavy agricultural tractors, and marine boats. Supported Communications Protocols
While Kess 2.90 includes numerous automated safety features, chip tuning always carries inherent risks. Adhering to strict professional guidelines ensures a smooth tuning process: commercial transport trucks
hardware to expand the tool's capabilities beyond its original factory limits. Key updates in this version include: Protocol Expansion
Use editing software (like WinOLS or ECM Titanium) to modify the file 1.2.4 .
If you own a Kess V2 running 2.90, it remains a workhorse tool for older diesel tuning (EDC15/EDC16/EDC17). It is a "keep it in the toolbox" tool. However, it cannot be your primary tool if you are working on 2020+ vehicles. If you are looking to buy one now, the value proposition is low unless purchased cheaply, as the Kess 3 has superseded it completely.