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Certificates
Version: Assist Central Pro v4.0.80
OS : macOS 15, macOS 26
Description:
1. Added support for German, Spanish, Russian, French, Korean, and Thai interface languages.
2. Fixed an issue where some devices weren’t being detected or were showing up incorrectly.
3. Fixed an issue on macOS where GC313Pro couldn’t retrieve firmware version information correctly.
OS : macOS 15, macOS 26
Description:
1. Added support for German, Spanish, Russian, French, Korean, and Thai interface languages.
2. Fixed an issue where some devices weren’t being detected or were showing up incorrectly.
3. Fixed an issue on macOS where GC313Pro couldn’t retrieve firmware version information correctly.
Version: Assist Central Pro v4.0.80
OS : Win10 x64,Win 11
Description:
1. Added support for German, Spanish, Russian, French, Korean, and Thai interface languages.
2. Added PCIe information display to the GC573 settings page.
3. Fixed an issue where some devices weren’t being detected or were showing up incorrectly.
4. Fixed a rare issue where GC553G2 lights couldn’t be controlled through Assist Central Pro on certain PCs.
OS : Win10 x64,Win 11
Description:
1. Added support for German, Spanish, Russian, French, Korean, and Thai interface languages.
2. Added PCIe information display to the GC573 settings page.
3. Fixed an issue where some devices weren’t being detected or were showing up incorrectly.
4. Fixed a rare issue where GC553G2 lights couldn’t be controlled through Assist Central Pro on certain PCs.
Version: GC313 FW Update Tool v1.19.30 Beta
OS: Win10 x64, Win11
Description:
1. Fixed intermittent charging when using the product with iPhone 17 Pro / iPhone 17.
2. Fixed issues when using the product with Switch 2, including:
2.1 Slow display when entering the quick menu or in-game chat.
2.2 Possible screen jitter during scaling.
Pre-Update Preparation
Firmware Update
Launch and run the firmware update tool, and follow the on-screen instructions to complete the update.
After the update is complete, disconnect all Type-C devices to ensure the upgrade takes effect.
Post-Update Connection
1. Plug the GC313 back into the power outlet.
2. Use an HDMI cable to connect the GC313 to your TV or monitor (ensure the display is powered on).
3. Use the included USB-C cable to connect your video output device to the C1 port of the GC313.
If you're using a Switch 2, connect it to the Type-C port on the bottom of the Switch 2.
4. If you're using a Switch or Switch 2, the screen will go black, indicating it has entered Dock mode.
5. When the video appears on the TV or monitor, the connection is complete.
OS: Win10 x64, Win11
Description:
1. Fixed intermittent charging when using the product with iPhone 17 Pro / iPhone 17.
2. Fixed issues when using the product with Switch 2, including:
2.1 Slow display when entering the quick menu or in-game chat.
2.2 Possible screen jitter during scaling.
Pre-Update Preparation
Unplug the GC313 from the power outlet.
- Use the USB-C cable included with the GC313 to connect the C1 port of the GC313 to a USB-C port on your computer (requires USB 3.2 Gen 1 or higher).
Firmware Update
Launch and run the firmware update tool, and follow the on-screen instructions to complete the update.
After the update is complete, disconnect all Type-C devices to ensure the upgrade takes effect.
Post-Update Connection
1. Plug the GC313 back into the power outlet.
2. Use an HDMI cable to connect the GC313 to your TV or monitor (ensure the display is powered on).
3. Use the included USB-C cable to connect your video output device to the C1 port of the GC313.
If you're using a Switch 2, connect it to the Type-C port on the bottom of the Switch 2.
4. If you're using a Switch or Switch 2, the screen will go black, indicating it has entered Dock mode.
5. When the video appears on the TV or monitor, the connection is complete.
Version: Assist Central Pro v4.0.73
OS : macOS 14, macOS 15
Description:
1. Support for EDID Merge, Copy, and Internal mode changes has been added for the following models:
GC515, GC553G2, GC553Pro, GC575, GC571, GC573, GC570D
Support for EDID Merge and Internal mode changes has been added for GC551G2 (requires firmware ver. 1.2.6.1)
*Note: For more information on EDID modes, refer to this FAQ
2. Fixed issue: When Nitendo Switch 2 was set to 1440p60 and when GC551G2 passthrough was connected to certain monitors, Assist Central Pro displayed incorrect input resolution.
Version: Assist Central Pro v4.0.73
OS : Win10 x64,Win 11
Description:
1. Support for EDID Merge, Copy, and Internal mode changes has been added for the following models:
GC515, GC553G2, GC553Pro, GC575, GC571, GC573, GC570D
Support for EDID Merge and Internal mode changes has been added for GC551G2 (requires firmware ver. 1.2.6.1)
*Note: For more information on EDID modes, refer to this FAQ
2. Fixed issue: When Nitendo Switch 2 was set to 1440p60 and when GC551G2 passthrough was connected to certain monitors, Assist Central Pro displayed incorrect input resolution.
OS : Win10 x64,Win 11
Description:
1. Support for EDID Merge, Copy, and Internal mode changes has been added for the following models:
GC515, GC553G2, GC553Pro, GC575, GC571, GC573, GC570D
Support for EDID Merge and Internal mode changes has been added for GC551G2 (requires firmware ver. 1.2.6.1)
*Note: For more information on EDID modes, refer to this FAQ
2. Fixed issue: When Nitendo Switch 2 was set to 1440p60 and when GC551G2 passthrough was connected to certain monitors, Assist Central Pro displayed incorrect input resolution.
Version: GC313 FW Update Tool v1.19.24
OS: Win10 x64, Win11
Description:
Supports Nintendo Switch 2: Fixed an issue where video and audio were not output.
Pre-Update Preparation
Firmware Update
Post-Update Connection
1. Plug the GC313 back into the power outlet.
2. Use an HDMI cable to connect the GC313 to your TV or monitor (ensure the display is powered on).
3. Use the included USB-C cable to connect your video output device to the C1 port of the GC313.
If you're using a Switch 2, connect it to the Type-C port on the bottom of the Switch 2.
4. If you're using a Switch or Switch 2, the screen will go black, indicating it has entered Dock mode.
5. When the video appears on the TV or monitor, the connection is complete.
OS: Win10 x64, Win11
Description:
Supports Nintendo Switch 2: Fixed an issue where video and audio were not output.
Pre-Update Preparation
- Unplug the GC313 from the power outlet.
- Use the USB-C cable included with the GC313 to connect the C1 port of the GC313 to a USB-C port on your computer (requires USB 3.2 Gen 1 or higher).
Firmware Update
- Launch and run the firmware update tool, and follow the on-screen instructions to complete the update.
- After the update is complete, disconnect all Type-C devices to ensure the upgrade takes effect.
Post-Update Connection
1. Plug the GC313 back into the power outlet.
2. Use an HDMI cable to connect the GC313 to your TV or monitor (ensure the display is powered on).
3. Use the included USB-C cable to connect your video output device to the C1 port of the GC313.
If you're using a Switch 2, connect it to the Type-C port on the bottom of the Switch 2.
4. If you're using a Switch or Switch 2, the screen will go black, indicating it has entered Dock mode.
5. When the video appears on the TV or monitor, the connection is complete.