Hi, you could upgrade this version firmware
- You could long press the ARC button on remote to turn OFF/ON the auto standby feature.
- Besides, long press the PHONO button on remote, could switch between MM/MC mode. Btw, normally, it works in MM mode, and when switch to MC mode, the device will just apply a +10dB extra gain over the phono input.
To upgrade B50 model:
- You need a USB disk with format FAT (not FAT32 or exFAT for now).
- And copy the firmware MVA file into the disk root directory (note: you need to delete any other MVA files), then plug the disk into B50,
- And then double press the front knob quickly (double click).
- If all goes well, all LEDs of B50 will light up which indicates the upgrading begins. And will turn to normal when finished.
Please do make sure don’t cut power in this process, or it will brick the device.