Firmware Upgrade 4.6.415145.34 - AMP v.4 2022.04.27

Hi Frank, @zpl1025 @zpl
looks like the latest update 4.6.415145.34 broke UART COMMAND
it does not adjust the volume in sync when in group mode anymore, can you correct it?
Updated automatically, could not choose not to upgrade.

And also there is no enhancements or change in the interface of the 4stream App on IOS.

I’ll check this command, thanks for the feedback.