Update Ktag Clone From 2.25 To 2.70 File

The Ultimate Guide: Updating Your Ktag Clone from 2.25 to 2.70

Step 3: Driver Preparation

Use Zadig to replace the Ktag’s WinUSB driver with libusb-win32 (not libusbK). The official Alientech driver updater often fails on clones.

Phase D: Driver Fix (The Blue Screen Trap)

After updating to 2.70, Windows often locks the driver. Update Ktag Clone From 2.25 To 2.70

  1. Unplug the Ktag.
  2. Run Zadig (included in most Ksuite packages).
  3. Select "List All Devices" > "Ktag".
  4. Replace the driver with libusb-win32 (v1.2.6.0).
  5. Reboot Windows.

Post-flash steps

  1. Open the Ktag software client (v2.70) and verify the device is recognized.
  2. Check firmware version in the device info menu; confirm v2.70.
  3. Restore any saved configuration if required.
  4. Perform a test read of a non-critical ECU to confirm normal operation.
  5. Reinstall/enable antivirus and firewall.

Steps:

  1. Open your Ktag. Locate the PIC18F46K80 chip (near the USB port).
  2. Solder wires to ICSP pins: PGD, PGC, MCLR, VCC, GND.
  3. Connect PICkit 3 to your PC. Open MPLAB IPE.
  4. Load the 2.70.hex file.
  5. Apply 5V to the Ktag (not 12V during programming).
  6. Click "Write" – wait 30 seconds.
  7. Reconnect USB + 12V. Now test connection in KSuite again. It should work.

Note: After PIC update, you may need to re-pair the software using a keygen (included in most 2.70 packages). The Ultimate Guide: Updating Your Ktag Clone from 2

Pre-update checklist

  1. Backup firmware & configs: Use the unit’s backup utility or a USB image tool to save current firmware and configuration.
  2. Save ECU maps: Dump and archive all ECU files you may need.
  3. Download drivers: Install appropriate USB-to-serial drivers for the cloned board.
  4. Disable antivirus/firewall temporarily while flashing (IPv4/USB drivers and installers can be blocked).
  5. Ensure stable power: Connect a UPS or stabilized adapter to the PC and a reliable 12V supply to the Ktag if required.

Step 3: The JTAG Flashing Process (Firmware Update)

This is the most dangerous step. Interrupting the power or connection here will kill the tool. Unplug the Ktag

  1. Connect JTAG: Connect your JTAG programmer to the KTAG board via the JTAG port.
  2. Open Programmer Software: Open the software for your JTAG tool (e.g., J-Flash Lite or J-Link Commander).
  3. Select Device: Choose the CPU type. Most KTAG clones use an ST10F276 or similar Infineon/Siemens controller.
  4. Select File: Browse for the Firmware file (usually ending in .hex or .bin) from your 2.70 update pack.
  5. Flash: Click Program/Erase/Flash.
    • Wait for the process to complete. It will say "Verify OK" or "Successfully Programmed."
  6. Disconnect: Once verified, disconnect the JTAG programmer and close the KTAG casing.