We would like to provide some clarification regarding our latest e-mail release. Essentially, there are currently no new software versions available. Rotax issued this release solely to incorporate the 916iS, and it's essentially a revision of a release from three years ago. Nevertheless, it's crucial for you to confirm that your software is the latest version during each annual inspection.
Furthermore, it's important to note that Rotax made a mistake in the SL (Service Letter) by inadvertently leaving a revision tab next to the 915iS engine. When we sent out the email notification, we believed that there was a new revision to the 915iS software. However, upon closer examination, it became evident that this was actually an ECU software update released three years ago in conjunction with the introduction of the new Turbocharger for the 915.
We acknowledge that this clarification should have been included in the initial email notification, and we apologize for any confusion it may have caused.