The customer plugs in the ENET cable and starts the client. You connect over your VPN and work with E-Sys, ISTA or Tool32 as if you were standing next to it — including Ethernet ECUs like RAM and MGU, flashed over fast HTTP. Live vehicle status, chat and full control. No extra hardware.
A lean, free app on the customer’s laptop, plugged into the car via the ENET cable, that does one thing: detect the vehicle and securely relay the diagnostic connection over VPN.
The control centre: pick vehicles, start a session, read status, chat with the customer, and code with E-Sys/ISTA/Tool32.
Pick one of these free VPNs, both are quick to install and need no configuration on the router:
On macOS we recommend ZeroTier, free, lightweight and reliable:
You and the customer install the same VPN and join a single network, with Radmin a network name + password, with ZeroTier a Network ID that you authorize.
The customer plugs the ENET cable from their laptop into the car and starts the Client. It shows the laptop’s VPN IP.
In the Operator, pick the vehicle (or add the client’s VPN IP manually), start the session and code with E-Sys, ISTA or Tool32.
VIN, model, type code, build date and I-level (factory & current) are read automatically.
Connect through the ENET cable or a BMW ICOM. The client auto-detects the interface (ENET, then ICOM via SLP on port 50160), or you fix one to skip the scan.
Battery voltage, mileage and diagnostic mode with real PWF state, read from the car, not guessed.
Detect and operate several vehicles at once, each with its own status, log and chat.
Runs over any existing IP connection, Radmin, WireGuard, Tailscale, ZeroTier. No specific provider required.
Messages with timestamps and read ticks, image & file attachments and paste-screenshot via Ctrl+V, no phone call needed.
Dedicated log window with a live verbose filter. Coding stays fully logged; only real firmware flashes are summarised, and an on-demand data-transfer dump captures the raw UDS traffic (hex) for reverse engineering.
Every readout, button and setting explained in the app, step by step, in German and English — for the operator and the customer.
The Windows and macOS clients update themselves, no manual download. An optional Beta channel per role delivers early builds.
Before you flash, run the built-in connection test between operator and client. It measures link stability and gives a clear verdict, safe, marginal or unsafe, backed by live frames ↑/↓ and a drop counter. A stable link means flashing is safe; on a shaky link the tool warns you up front, because a dropout mid-flash can brick the control unit.
To flash an Ethernet ECU, E-Sys opens a second connection directly to the control unit’s own IP — bypassing the gateway. Over a VPN that address simply does not exist. Remote ENET creates it locally on your PC, catches the connection and tunnels it through the client to the real ECU in the car.
✓ RAM flashed remotelyBig Ethernet ECUs like the MGU are meant to be flashed over HTTP, not plain UDS. The tester only picks HTTP on a link-local connection, so Remote ENET offers E-Sys the car under its link-local address automatically. No gateway URL to type, no tricks in E-Sys.
✓ MGU flashed over HTTP, remotePick E-Sys HTTP or ISTA HTTP in the settings — it applies instantly, even mid-session. The other tester keeps finding the car at the same time over the VPN. You only ever flash with one of them, so that is all you need.
✓ Both testers, one sessiontcp://169.254.71.35:6801Download the Operator, start it and use every feature free for 14 days. No signup, no key, no request. After that, activate with an FSC license.
For the customer’s laptop, plugged into the car via the ENET cable. Free.
Download for WindowsThe same client for macOS, one universal disk image for Apple Silicon & Intel.
Download for macOSFor the coder. Free 14-day trial built in, just download & start, no signup. After 14 days an FSC license is needed.
Download for WindowsThe client stays free for your customers, forever. If Remote ENET saves you time, a small tip helps keep it maintained and improved.