Before You Begin
Prepare your amplifier for the firmware update.
1
Open the amplifier
Remove the four M3 bolts from the top panel using a 2 mm hex driver (Allen wrench).
Lift off the top lid to expose the circuit board.
Remove the four M3 bolts from the top panel using a 2 mm hex driver (Allen wrench).
Lift off the top lid to expose the circuit board.
2
Locate the USB port
On the circuit board you'll see two small buttons labeled RESET and BOOT, and a micro USB port next to them.
On the circuit board you'll see two small buttons labeled RESET and BOOT, and a micro USB port next to them.
3
Connect the USB cable
Plug a micro USB cable into the port on the board, and the other end into your computer.
Plug a micro USB cable into the port on the board, and the other end into your computer.
4
Connect main power
Make sure the amplifier's main power cord is plugged in. The amp does not need to be turned on, just connected to power.
Make sure the amplifier's main power cord is plugged in. The amp does not need to be turned on, just connected to power.
1 Select Your Amplifier
Click the image that matches your AC650 amplifier.
2 Connect Your Amplifier
Click the Connect button below. A popup will appear. Select "USB JTAG/serial debug unit" and click Connect.
Not connected
3 Update Firmware
Amplifier:
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Config:
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Firmware:
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Leave unchecked to preserve Wi-Fi, provisioning data, and audio profile. Only check this if you are experiencing issues. You will need to reconnect Wi-Fi and reprogram the audio profile via the Acoustas app.