Use the arrow keys to move down four times to the “(on USART3 PB11/PB10)” menu as shown in the figure, and use the “Space/Enter” key to confirm the selection. Use the arrow keys to move down twice, select the menu as shown in the figure, and use the “Space/Enter” key to select and enter the next menu.

We provide some compiled firmware, available from here: https://github.com/Flsun3d/Flsun_Speeder_Pad/tree/main/firmwareCreate a new folder and rename the folder to “Printer Model + Size + Leveling Method”, For example, Flsun-Q5, the size is 200200200, and the leveling method is Auto level, then the folder name is “Flsun-Q5 pro 200200200 Autolevel”. After the selection is successful, you should return to the menu as shown in the figure. At this time, use the arrow keys to move down, and use the “Space/Enter” key to select and enter the next menu. The steps of burning are mentioned in the configuration file, and we should follow the steps of the configuration file. Use the arrow keys to move down four times, select the menu as shown in the figure, and use the “Space/Enter” key to select and enter the next menu.

The attached volume appears to be invalid.” This will appear if you connect a flash drive that does not use a readable format. You can use the “direction key” to move up and down, use the “Space/Enter” key to select and confirm, and use the “ESC” key to return or exit. Use the arrow keys to move up once, select the menu as shown in the figure, and then use the “Space/Enter” key to confirm the selection and enable the “extra low-level” function. On the lower right side of the screen are the operating instructions for the compilation environment. The parts not mentioned in the configuration instructions do not need to be configured, just follow the default.

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If your device is a USB drive, you can find your files in the Files app. If files are zipped, just press the zip folder and photos will be extracted automatically to a separate folder. If your motherboard has no BootLoader and is not an SD card upgrade, please use the following method to upload the firmware.