The "iProg programmer not connected" error is rarely a fatal device failure. In 90% of cases involving new units, the culprit is a missing CH340 driver, an incorrect COM port number assignment, or a low-quality USB cable. Addressing the USB-to-Serial bridge configuration typically resolves the issue immediately.
Troubleshooting "iProg Programmer Not Connected" (New Setup)
Setting up a brand new iProg+ or iProg Pro programmer can be frustrating when the software displays the "Programmer is not connected" error. This status usually stems from three main areas: driver installation, power supply, or hardware modifications (especially for clone versions). 1. Verify Driver Installation Status
The most common cause of the "Not Connected" error is an improperly installed driver. You can diagnose the connection status by checking the programmer's behavior:
Programmer is not connected: Often indicates the driver is missing or not assigned correctly in the Device Manager.
Flashing Red LED: If the red "power" LED is flashing while the software shows "Not Connected," the hardware is receiving power but cannot communicate with the PC.
Solution: Open Windows Device Manager and ensure the device is listed under "Universal Serial Bus controllers" or "Ports (COM & LPT)" without a yellow exclamation mark. If it's missing, reinstall the driver from your provided software disc or download it from a reputable source. 2. Check Power Supply and Connections iprog programmer not connected new
The iProg requires a stable power source to initialize properly. If the software cannot see the device, it may be underpowered or disconnected.
USB Port Quality: Some USB 3.0 ports (often blue) on modern laptops may not provide the correct voltage for older programmer designs. Try switching to a USB 2.0 port if available.
External Power Test: If you are performing a "Pin Test" or "External Power Test" and receive a "FAULT – EXTERNAL POWER IS NOT CONNECTED" message, ensure the external 12V power supply is connected if the specific script requires it. 3. Hardware Repairs for Clone Versions
Many "iProg+ Clone" units sold online require specific hardware modifications to function correctly out of the box. If you have a new clone unit that refuses to connect or fails self-tests, check the following:
Resistor Replacements: Faulty PORT errors (where some pins show "OK" and others show "FAULT") are often solved by replacing specific resistors on the mainboard. Change the pull-up resistor to 4k7. Change the ADC voltage divider resistor to 51k.
Current Sense Resistors: Replace the MC3406 current sense resistors with 0.22 Ohm to fix 10V and 12V power errors. 4. Software Compatibility The "iProg programmer not connected" error is rarely
Ensure you are using a software version compatible with your hardware. Mixing versions (e.g., using V87 software with a V84 firmware device) can lead to connection failures.
Run as Administrator: Always run the iProg software with administrative privileges in Windows.
Antivirus Interference: Some antivirus programs flag the iProg scripts as "false positives," which can prevent the software from initializing the connection to the hardware. REVELTRONICS Programmer is not connected (V1.9.0) - REVELTRONICS
Subject: Troubleshooting "Device Not Connected" or "Hardware Not Found" Device: iProg (Cloned/V2.0/V4.0 versions)
If you have a new device, follow this protocol to resolve the connection error:
The phrase is self-explanatory but misleading. It means the iProg software is detecting a hardware unit, but the firmware or driver signature does not match the current software’s expectation. 90% of "Not Connected (New)" errors on Windows
The keyword here is (New) . The software labels the connected device as "New" because it has either:
The iProg programmer is a popular tool among automotive technicians and electronics enthusiasts for odometer correction, airbag reset, and IMMO programming. However, one of the most frustrating hurdles users face—especially when setting up a unit for the first time—is the dreaded "Device Not Connected" or "Hardware Not Found" error.
If you are staring at a red light or an unresponsive software interface, do not panic. This guide outlines the most common reasons why your iProg is failing to connect and provides step-by-step solutions to get you up and running.
90% of "Not Connected (New)" errors on Windows 10/11 are due to driver signatures. iProg clones need a specific, unsigned FTCProg.dll or iProg.sys driver.
How to disable permanently (Windows 10/11):
Alternative (One-time boot):