Guides & Tutorials
Practical, no-nonsense guides for ECU professionals — reading methods, tooling, checksum, and what each solution actually does.
GETTING STARTED
Identify your ECU
Read the hardware & software numbers and match them to the right file.
Read →OBD, Bench, Boot or BDM?
Choosing the right read method for your ECU.
Read →What's in a backup
Full read, flash, EEPROM — what each dump contains.
Read →TOOLS
Reading with KESS3
Best practices for a clean, safe read.
Read →KTAG bench connections
Wiring and points to watch on the bench.
Read →Autotuner: first read
Step-by-step from connection to file.
Read →FILES & CHECKSUM
ORI vs modified
What actually changes inside the file.
Read →Checksum correction
How your flashing tool recalculates it on write.
Read →Restore from ORI backup
Bringing the ECU back to factory state.
Read →SOLUTIONS EXPLAINED
Stage 1 explained
What it does and what to expect.
Read →DPF / EGR / AdBlue off
How emission solution files work.
Read →DTC removal
Selective vs full — doing it right.
Read →
Can't find the guide you need?
Ask us directly — we're happy to point you in the right direction.
Contact us →
What you'll learn
Read methods
OBD · Bench · Boot
Understand which reading method fits your ECU before you start.
Tooling
KESS3 · KTAG · Autotuner
Hands-on tips for the most common professional flash tools.
Files & checksum
ORI · ready to flash
Know exactly what you receive and how checksum is handled.
Solutions
Stage 1 · DPF · DTC
What each modification actually does, explained clearly.
The guides cleared up checksum handling for me in minutes — no more guesswork before a write.
Independent garage owner
Repair shop, France
Clear, practical and written by people who actually flash ECUs. Exactly the reference I needed.
Mobile chiptuner
Self-employed pro, EU