What can go wrong?

The focus during development has been stability. We understand that the idea of tuning your own car can be a bit daunting and that is why we have tested every possible situation. Now of course you should never attempt to do any of these things, but it is reassuring to know that it can always be recovered.

• Removed the adapter part way through a flash.
• Force closed the app.
• Turned off the ignition and left the car overnight.
• Ran the car battery down till the dashboard lights were flickering with many consecutive flashes and perhaps unbelievably the battery kept the flash process alive. After a key cycle the battery was completely flat no lights or anything. Of course, once charged back up the car was as it should be.

After all these situations, the fix? Just open the app and start flashing again!

Now while we have tested stability in this manner there can be some differences and even programming bugs between versions so we would never recommend attempting to do any of the things above and always follow our guides.

The exclusion and one thing we cannot protect you from is if your ECU has previously had the immobilizer removed. 
Flashing over the top of an immo solution will unfortunately reactivate the immobilizer and block you starting your car. This would be the same for any tool or person flashing the car through the OBD port. Fortunately, it is a simple fix which can be carried out directly on the ECU by us or one of our partners. If you wanted to be as sure as possible that your ECU has not previously been tampered with you could reference the VIN that the app reads against the VIN stamped on the car or shown in the logbook. While it is not impossible that the VIN was altered when the immobilizer patch was previously applied, it is I would say unusual for someone to be that thorough.