Preparing your file and uploading it to Flow VIN Tune
Questa guida è al momento disponibile in inglese.
You have a fresh read of your ECU — this guide gets it from your laptop into your order in a form that passes validation and review on the first attempt.
The short version: upload exactly what your tool saved, declare your car honestly, and let the pipeline do the rest.
Prima di iniziare
- A complete read of your ECU saved on your laptop (see the reading guide if you are not there yet).
- An account and an order in progress — the intake flow creates one in a few minutes.
01Check the file before uploading
Upload the raw binary exactly as your read tool saved it. No zipping, no renaming the extension, no opening it in an editor "just to look" and accidentally re-saving.
Sanity-check the size against what your tool documents for your ECU — full reads are typically megabytes, not kilobytes. A tiny file is usually an export or a partial read and will be rejected.
Keep a second, untouched copy of the original somewhere it cannot be overwritten. This is non-negotiable insurance: it is your way back to stock.
02Complete the intake honestly
The intake asks for your model, year, engine, ECU family, fuel, and any hardware changes. The tuner reads these answers next to your file — mismatches between the two are a common rejection cause.
If your car has modifications, declare them. A declared bolt-on changes which service fits; an undeclared one wastes a review round when the tuner spots its traces.
03Upload through your order
The order page gives you a secure upload slot. Pick your .bin and let it finish — large files over slow connections can take a few minutes; do not navigate away mid-transfer.
Every upload lands in quarantine first, where it is scanned and validated (size, type, structure) before anything else happens. Files that fail validation never reach a tuner — you get the reason instead.
04What happens next
Once validated, your file is fingerprinted with a SHA-256 hash and stored immutably as the order’s original. That hash follows every version of your file from here on — what the tuner reviews is provably what you sent.
Analysis runs next: the platform identifies your ECU from the file itself and, on supported families, proposes a candidate for the tuner. You can watch the order status move through these stages on the order page.
Nothing is delivered automatically at any point — a human tuner approves every file before download becomes possible.
Risoluzione dei problemi
- The upload is rejected immediately (size or type)
- The validation gate enforces sensible bounds for ECU reads. An oversize file is usually the wrong export; an undersize one is a partial read; a wrong extension means the tool saved a container format. Re-save or re-read, then upload the raw .bin.
- I uploaded the wrong file
- Use the restart action on the order page and upload the correct read — you are not charged again, and the tuner sees the new version cleanly.
- The upload stalls or fails partway
- Check your connection and retry from the order page — an interrupted upload never half-counts; only a fully received, validated file enters the pipeline.
Ogni file di Flow VIN Tune viene controllato e approvato da un tuner umano prima che possa essere scaricato. Modificare il software del motore può incidere su omologazione, assicurazione e garanzia del costruttore, e l'uso su strada può essere soggetto a restrizioni nel tuo Paese — la conformità è una tua responsabilità. Le guide sono informazioni generali, non istruzioni per il tuo veicolo specifico; in caso di dubbi rivolgiti a un professionista.
Guide correlate
Reading your ECU: tools and methods (OBD vs bench)
Getting a complete, correct .bin out of your car before you upload it.
Stage 1 vs Stage 1+ — what actually changes
What each service modifies, and how to pick the right one for your car.
Why files get rejected — and how to fix yours
The common rejection causes (partial read, wrong file, unsupported ECU) and the fix for each.