Firmware rollback possible?

Today i run update for my Tacx Flux S in android utility app. It got stuck on uploading for like 10 minutes so i cancelled it. Now my trainer wont work with any app, power led is orange (software issues?). Zwif and Tacx can both find it, but no output while pedalling... In utility app it connects fine, but update now says its up to date (3.3.40 / 1.1.3). I also tried facotry reset in app, and it did nothing, still on 3.3.40 / 1.1.3. Is there anything i can do? Like manually download old firmware and flash it, or repair the new update. Thanks for help.