Welcome to Midland Official Website !
Install the device drivers inside the virtual machine guest OS if prompted. Maximizing Performance and Troubleshooting Optimizing Performance
| Problem | Solution | |-----------------------------------------|--------------------------------------------------------------------------| | USB dongle not detected in guest | Edit .vmx → add usb.generic.allowHID = "TRUE" . Reboot host if needed. | | Checksum tool fails (OLS controller) | Run WinOLS as Administrator. Set compatibility mode: Windows 7. | | Slow map loading / laggy UI | Increase video memory to 256 MB. Disable 3D acceleration . | | Kess V2 fails to connect | Inside guest: install libusb / WinUSB driver via Zadig. | | VM fails to start after hardware change | Reinstall VMware Tools, check .vmx for invalid USB filters. | winols 47 vmware
Assign at least 2GB of RAM and 2 CPU cores to the virtual machine for optimal performance. Install the device drivers inside the virtual machine
(or the latest version) within the guest OS to enable paravirtualized drivers, which significantly improve I/O paths and window dragging speeds. Hardware Passthrough | | Checksum tool fails (OLS controller) |
Updated mapping for the latest ECU types. Contents of a Typical WinOLS 4.7 VMware Bundle
Navigate to the Configuration menu to select your preferred language (English, German, French, etc.). Important Considerations
If your hardware drops connection during reading/writing, go to VMware VM settings, navigate to the USB Controller tab, and toggle compatibility between USB 2.0 and USB 3.1 depending on your hardware's age.