Amanero optimize for Linux firmware Support Linux, Mac and Windows native DSD64-512,PCM up to 384KHz (Only for who can do the update process by himself, we don't reply any questions about the update process, if you have any questions about the update process, please download and read the guide of every model or ask in here https://www.head-fi.org/threads/audio-gd-di-20.918123/page-117 ) Please note: 1,The Windows and Mac users don't need update,  the product default firmware that is optimize for the Windows and Mac. 2, The R2R model DACs must update the FPGA firmware to 2021_Oct version for compatible with the Amanero optimize for Linux firmware.        FPGA Update firmware download    The ESS chip built in models just update the Amanero firmware is ok. 3, If you want to update back to the Amanero optimize for Win firmware , please click here.                     Amanero optimize for Win firmware 4, After update this version firmware ,if still need the unit work with Windows , please download this driver .      Driver_Amanero_optimize_Linux 　 Update steps: 1,  Download the update tool  “Amanero_optimize_Linux” file and unzip it .        Tool_Amanero_optimize_Linux 2, Connect the DAC input port to computer through the USB cable, power on the DAC .    Double click the “ConfigTool” and then follow the tool guide to finish the update.    When open the tool, there is an ID windows, just keep it as default and click ok. 3, The unit without “ Update Port” on rear , user had to open the unit to short two pads on the Amanero module for 2 second for erase the device, Then shut down the DAC.      4, If the unit with the “Update Port” on rear, user only need push and hold for 2 second, for erase the device, don’t need open the unit. Then shut down the DAC.   Please note:          Some few customer feedback they accidentally touch the Amanero update button cause the firmware delete, Since 23rd. July 2021 , the product ship without connect the update button wire, if customer want to active the update button feature, connect by self.       5 ,Power up the DAC again, make sure you are connected to the network. 6,Press start update step1, wait 5 seconds after completion, and then press start update Step2. 7,When finished, turn off the machine. 8,Complete the upgrade after restarting the machine 9, After update this version firmware ,if still need the unit work with Windows , please download this driver .      Driver_Amanero_optimize_Linux 10, Users had to update the FPGA firmware for match with the new Amanero firmware, more model firmwares are working. ESS chips built in models don't need update the FPGA firmware.      Update firmware download