No Audio After Firmware Upgrade Fix

by TEYES Australia May 4, 2022

Vehicles that have Auto Start-Stop), the DSP was set not to refresh the parameters when the vehicle engine is ignited (ACC ON). Otherwise there will be a 2 seconds music pause when DSP refreshed the parameters.

Recently we found that there are some vehicle models will be affected by this, the vehicle will have abnormal voltage fluctuations when ACC is ON, causing the DSP of the vehicle not able to function normally, the head unit has no audio, and the head unit must be restarted to have recover the audio. In order to ensure the better usage experience for most users, we decided to roll back to the previous working mechanism. Allowing the DSP parameters be refreshed every time when ACC is ON.

Click here to download the latest MCU version If you have not encountered this situation where there is no audio from the head unit after starting the vehicle, you do not need to update the MCU.)

Steps:
1) Unzip the downloaded file

2) Place the extracted 3 files into the root directory of an USB flash drive

3) Plug USB into the head unit USB input and the MCU upgrade will run automatically and completed within 1 minute.

4) After the upgrade, MCU version will be: 25-10-2021