B50 Upgrade = nogo

Good morning,

I just received my B50 amp, connected it via HDMI to a Vizio tv and a FireTV stick.
Everything is working , however

1.0) Deep Bass does not survive a (standby) power up/down cycle.
or Go Control restart Is it normal ?

2.0) And the standby mode is acting weird … after being activated after around 30sec, by itself it switches to the ARC line … I expect all devices to be powered off or in standby mode.

GoControl v1.3.1
B50 Firmware : 50-0ce1e3ac-8

I found an old SD card 16MB and soon I’ll install :

I hope it will address the issues I have.