this connection does not work

I found the reason for the volume drop) On the phone, in the bluetooth settings, the synchronization of the volume levels of the connected devices with the volume level of the phone was turned off. Do not judge strictly. Let it go) Resirver plays amazingly. According to Ldac - clean and rich...

Sorry, did not follow the translator. Please tell me how to roll back to the previous firmware?

Probably, it seems to me that the balanced output gain has decreased after a firmware update? This is more noticeable at a distance of 3.5 mm. Power, as it were, fell by 2 times? I'm in shock How to roll back to the previous firmware?

When to wait for a software application for a subject and an additional case?

Will there be "in-car" mode in the new firmware, as in btr5?

Where can I download the beta application to up4?

did not find a good review

No

Gentlemen DAC is in the specifications of the Samsung company? Or is it your fantasy on the subject?