Following release of the Spark firmware 1.4.3 end of July 2021, a number of users reported some issues, having no sound coming out of the amp anymore after the firmware update.
In the majority of cases, it it recommended to perform the update procedure 2-3 times to fix the issue.
Be sure to follow the exact procedure, step by step.
In case you still have troubles after multiple update attempts, you should reach out to Positive Grid support team. It looks like in some rare cases, depending on your computer configuration, the updater doesn’t work. In this case Positive Grid will send you a new updater file with logging capacity. In most cases, this will fixe the issues and.
As far as i know, there has been no amp permanently damaged or bricked so don’t freak out and be patient.