If the new firmware "Loudest" 0dB ROM file doesn't remedy the low volume issue feel free to restore the original FW (Helm Audio Bolt Firmware (ver 7860) new) found in link above. Once it completes the firmware update you can click "Verify" but it's not necessary. If it doesn't appear, disconnect the headphones and reconnect and see if it shows up.ĥ) Click the "Burn" button. Click "Browse" and find the "cust014ext_Helm_3osc_THD_0dB.ROM" file and select it so it appears as a directory listed item in the Source File Info field.Ĥ) In the "Target Device Info" field "HELM USB-DAC" should be visible. As software for Windows and Mac, Bolt Manager allows you to pair multiple receivers to your transmitter, select frequencies, load 3D LUTs (Bolt 4K 750/1500/MAX only), and perform firmware upgrades. Note: Open the Folder you will see three files Updater Utility exe., 0dB ROM (new firmware) file and the original firmware file.ġ ) Connect a pair of headphones to the BOLT, and insert the BOLT into a USB port on your PC.Ģ) Launch the BOLT MQA Firmware Upgrade utility exe.ģ) On the right of the "Source file info" field is a "Browse" button. With Bolt Manager, you can configure all your Bolt 4K devices simultaneously.On your PC download and unzip the file linked here: BOLT FIRMWARE.This firmware will reset the the volume values and in most case will correct your low volume issue.
The latest firmware addresses low volume problems while using apps like Spotify mainly on Android 12 devices.
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