*This instruction is about to upgrade both sDP-1000EX's Main firmware and Audio USB module firmware.
  * The both firmware upgrade should be done at once.

====== How to upgrade the sDP-1000EX firmware ======
===== Upgrade the Main Firmware =====
==== Preparations ====

  * Download and Extract sDP-1000EX's Main firmware.
[[http://sotm-audio.com/data/FW/sDP-1000EX/sDP-1000Ex_V2.1_20190705.zip|sDP-1000Ex_V2.1_20190705.zip]]
  * Download and install Flip software for the firmware upgrade.
[[http://ww1.microchip.com/downloads/en/DeviceDoc/JRE%20-%20Flip%20Installer%20-%203.4.7.112.exe|Flip 3.4.7 software]]

==== Connect to sDP-1000EX  ==== 

Connect sDP-1000EX to PC by a USB cable.
Change the position of the red switch on the rear panel of sDP-1000EX to the DFU side. The red switch is next to Audio USB port.
Turn on sDP-1000EX. The OLED won't display anything.
  * If, the OLED displays something,  check the red switch's position, and then try to turn on the device again.
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==== Run Flip program ====

Run Flip program.

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==== Select a device ====

Click the button to select a device, and select AT90USB1286.
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==== Connect the device ====

Select USB Port Connection and click Open button to be connected.
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==== Select Firmware file ====

Select Load Hex File mene , and then select the download firmware.
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==== Update Firmware ====

Click 'Run' button to update the firmware.
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==== Finish upgrading the main firmware  ====

Once the main firmware upgrade is finished, change the position of the red switch to Audio side, and turn on the device. Then, the OLED display normally.
  * If, the OLED displays nothing, check the position of the red switch again, then turn on the device.
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===== Upgrade Audio USB module firmware =====
==== Preparation ====

  * Download the Audio USB module firmware.
[[http://sotm-audio.com/data/FW/sDP-1000EX/app_usb_aud_l1_2xoxs_v6.c2.bin|app_usb_aud_l1_2xoxs_v6.c2.bin]]

  * If the SOtM driver for Windows OS is not installed, download and install it to the PC properly.
[[http://www.sotm-audio.com/files/Drivers/SOtM_USB_Audio_2.0_Driver_v2.23.0.zip?f8ee08&f8ee08|SOtM USB Audio 2.0 Driver v2.23.0]]

==== Upgrade SOtM USB Audio Firmware ====

  - Connect sDP-1000EX to PC by a USB cable, and turn on the sDP-1000EX.
  - Run SOtM USB Audio Firmware Upgrade(It is installed together when you installed the windows driver to Windows OS)
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==== Select the firmware file ====

Click Browse button and select the downloaded firmware.
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==== Update the firmware ====

Click Start button to update the firmware.
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==== Finish upgrading the USB audio firmware ====

Run SOtM USB Audio Control Panel and check the firmware version of sDP-1000EX.

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===== Download =====
==== sDP-1000EX FW file ====

  * [[https://drive.google.com/file/d/1Q1xt2iD-BOBxVFSZLXaGhbgKXLMLsEXf/view?usp=sharing|sDP-1000Ex_V2.1_20190705.zip]]
  * [[https://drive.google.com/file/d/1u424lpKoN4NIGSyu4_4cQjXlNma29Hb5/view?usp=sharing|app_usb_aud_l1_2xoxs_v6.c2.bin]]

==== Utilities ====
  * [[https://drive.google.com/file/d/17aKetI0CJA4wW6p3FhWnCmXpsUWkbILh/view?usp=sharing|Flip 3.4.7 software]]
  * [[https://drive.google.com/file/d/1vF33ahLgm7DEgUY8uR3pBh4EhER1t3bC/view?usp=sharing|SOtM USB Audio 2.0 Driver v2.23.0]]