1
Pick car and controller
Select the vehicle, then the ECU family. Turn on Auto Detect when you want SUMX to identify the controller from the file.
SUMX v1.1 · Server online
Patch ECU checksums and CRCs without guessing.
SUMX is a licensed desktop app for tuners and workshops. Choose the car and controller, drop a BIN file, and recalculate the checksums that keep a flashed file valid.
SUMX v1.1 — Checksum
How it works
Three steps that match the app.
If you already open BIN files for remaps, the SUMX screen will feel familiar. The workflow is the same one in the screenshot.
2
Drop the BIN
Drag a binary onto the cloud panel or use Open. The path shows under the drop zone so you can confirm the right file.
3
Patch
When the file is loaded, Patch writes the checksum and CRC values for that controller. Logs stay on screen so you can review the result.
Why SUMX
Built for people who flash files every day.
Auto Detect
Let the app match the controller when the BIN header is known. Manual selection is always available.
Desktop workflow
No browser upload. Work on local BIN files the way you already do next to your flasher.
Growing support list
Bosch, Continental, Delphi, Siemens, and more. Check the live list before you take a job.
Pricing
Licenses that match how you work.
Placeholder prices for planning. Contact us to license a seat. Daily patch caps follow the same model as the app header.
Tuner
$49 / month
One seat for independent remappers.
- 20 patches per day
- Standard support list
- Email support in 48 hours
Most used
Workshop
$129 / month
For benches that run files all day.
- 100 patches per day
- Full support list
- Priority email, 8-hour target
Fleet
$299 / month
Multi-seat shops and software houses.
- Unlimited daily patches
- Priority controller requests
- Named account contact