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Bridge 75 VIA Instruction
To edit the keymap in VIA, load the .json file (right click and save) once initially.
Firmware (Flash with QMK Tool Box):

RGB version (v1_17)
No RGB version (v1_15)
We will continuously release updated firmwares to fix bugs and improve the performance of the Bridge 75. Customers are encouraged to install the latest firmware before using it.

Wireless module program (Only update this to solve the issue of the 1-4 key backlight blinking in Bluetooth/2.4G mode)

Added deep sleep mode in wireless mode to fix power consumption.In Bluetooth mode, if the keyboard is not operated for 30 minutes,it will enter deep sleep mode. Once the keyboard enters deep sleep mode, the first keypress will be used to wake the keyboard and will not produce an input. In 2.4G mode, if the keyboard is not operated for 30 minutes,it will enter deep sleep mode. Once the keyboard enters deep sleep mode, the first keypress will be used to wake the keyboard and will produce an input.
Fixed the issue that some keyboards cannot wake from deep sleep in 2.4G or Bluetooth mode.
Fixed some bugs.

Added deep sleep mode in wireless mode to fix power consumption.In Bluetooth mode, if the keyboard is not operated for 30 minutes,it will enter deep sleep mode. Once the keyboard enters deep sleep mode, the first keypress will be used to wake the keyboard and will not produce an input. In 2.4G mode, if the keyboard is not operated for 30 minutes,it will enter deep sleep mode. Once the keyboard enters deep sleep mode, the first keypress will be used to wake the keyboard and will produce an input.
Fixed the issue that some keyboards cannot wake from deep sleep in 2.4G or Bluetooth mode.

Added three key values: "LowDelay — LowD", "CommonDelay — ComD", "HighDelay — HighD".