Update Ktag Clone From 225 To 270 Exclusive

Yes, if you have Green PCB. No, if you have White PCB.

Successfully updating a ktag clone from 225 to 270 exclusive transforms a $150 clone into a device that performs at 95% of the original $2,000 unit. You gain access to nearly all ECUs up to 2023.

However, always keep a backup of 2.25. If you tune a rare ECU that fails with 2.70 (some Asian market ECUs have this issue), you can always revert.

Pro Tip for Professionals: If you rely on Ktag for income, do not update mid-week. Update on a Friday so you have the weekend to recover the device if it bricks. Better yet, buy a second clone—keep one on 2.25 for legacy cars, and update the second to 2.70 for modern vehicles. update ktag clone from 225 to 270 exclusive

Do not open the GUI yet. You need to write the 2.70 bootloader to the clone’s internal memory.

  • Verify current device:
  • Place device in bootloader/update mode per vendor clone procedure.
  • Transfer firmware:
  • Verify flash:
  • Reconfigure device:
  • Reboot and perform initial self-checks:
  • Functional validation (see Test Plan).

    • The question on everyone’s mind: “If it ain’t broke, why fix it?”

    While Version 225 is legendary for its stability with older Ford, Bosch, and Siemens ECUs, it hits a wall with newer hardware. The Version 270 update introduces support for newer protocols required for modern vehicles. Yes, if you have Green PCB

    Key Benefits of v270:

    Yes. But with caveats.

    Updating your KTag clone from 2.25 to 2.70 Exclusive transforms a legacy tool into a modern workhorse. You will be able to read/write 2024 ECUs that 2.25 can't even identify. Do not open the GUI yet

    The Risk: If you interrupt power during the bootloader flash (Step 6), your clone is dead. No repair possible. The Reward: Access to MG1 and Trionic protocols, saving you $2,000 on a new original unit.

    KTAG clones replicate the original Kess/KTAG interface for ECU read/write. Version 2.25 lacks support for many 2020+ ECUs (Bosch MED17.5.24, Sim18, TC17xx). Versions 2.68–2.69 add:

    Version 2.70 (excluded) introduces hardware handshake with an Infineon security chip not present on clones.

    After successfully updating your KTag clone from 2.25 to 2.70 Exclusive, perform a validation test.

    Here is the full guide on updating a Kess/Ktag Clone from firmware 225 to 270.