Vcds Loader Kolimer -

| Action | What to do | |--------|------------| | | Click Refresh . The dongle should appear as “VCDS‑Kolimer (VID:PID …)” . | | Backup (optional) | Click Read EEPROM → Choose a folder → Save eeprom_backup_YYYYMMDD.bin . | | Load firmware | Click Browse , pick the .hex file. | | Flash | Press Write Firmware . A progress bar will show the upload. Do not unplug the dongle. | | Verify | After flashing, click Verify (or the loader will auto‑verify). A “PASS” means the CRC matches. | | Reset | If you enabled “Auto‑Reset”, the loader will cycle the dongle; otherwise click Reset or unplug‑replug. | | Done | Close the UI. Your dongle is ready for VCDS. | 4.2 Command‑Line Mode (batch & scripting) The Kolimer loader also ships a CLI ( vcds-loader.exe ) useful for automation. 4.2.1 Syntax Overview vcds-loader.exe [-d COMx] -f <firmware_file> [options] | Switch | Meaning | |--------|---------| | -d COMx | Force use of a specific COM port (e.g., -d COM5 ). If omitted, the loader auto‑detects. | | -f <file> | Path to the firmware image (required). | | -b <file> | Backup EEPROM to <file> before flashing. | | -r | Reset the dongle after flashing (default: on). | | -v | Verify after write (default: on). | | -l <path> | Write a debug log to the given file. | | -q | Quiet mode – only errors are printed. | | -h | Show help. | 4.2.2 Example: One‑liner for a fresh install # PowerShell – runs as admin C:\Tools\VCDS-Kolimer\vcds-loader.exe -f C:\Firmware\VCDS_20.22.01.hex -b C:\Backups\eeprom_preflash.bin -l C:\Logs\vcds_flash_20260414.log 4.2.3 Example: Batch flashing multiple dongles @echo off setlocal enabledelayedexpansion set FIRMWARE=C:\Firmware\KolimerCustom.bin set LOGDIR=C:\Logs

for /f "tokens=1 delims=," %%A in ('vcds-loader.exe -l nul -list') do ( echo Flashing dongle on %%A ... vcds-loader.exe -d %%A -f "%FIRMWARE%" -l "%LOGDIR%\flash_%%A_%date:~-4%%date:~4,2%%date:~7,2%.log" ) echo All done. (The -list flag is a hidden helper that prints detected COM ports, one per line.) | Symptom | Likely Cause | Fix | |---------|--------------|-----| | Loader shows “No device found” | Driver not installed / wrong USB port / dongle faulty | Re‑install FTDI/CP210x driver, try a different USB cable/port, verify the dongle lights up. | | Write fails with “Timeout” | USB power dropout, corrupted firmware file, or old bootloader | Use a powered USB hub, re‑download the firmware, try flashing an older firmware (bootloader may need an intermediate version). | | Verification fails (CRC mismatch) | Incomplete transfer, or you selected a wrong firmware file for the dongle model | Ensure you have the correct .hex for your exact dongle (V5 vs V6). Re‑flash and watch the progress bar reach 100 %. | | Device disappears after flash | Bootloader not compatible with current Windows driver signature (rare) | Uninstall the current driver, reinstall the VCDS driver that ships with Ross‑Tech, or use “Driver Signature Enforcement Disable” mode (advanced). | | Debug log shows “0x??: Invalid command” | Loader and dongle are mismatched (e.g., trying to flash a V6 image on a V5) | Double‑check the firmware version and the dongle model. | | USB device shows “This device cannot start (code 10)” | Windows driver conflict | In Device Manager, uninstall the device, check “Delete the driver software for this device”, reboot, then reinstall the driver. | vcds loader kolimer