User manual
1.The usb cable can only be plugged into the left keyboard
left --> master
right --> slave (The usb plug is only used to upgrade the firmware)
2.Flash firmware button
①Connect to the computer with a data cable
②Double click the button (not single click!)
③Computer will appear a disk named "IFKB"
④Copy uf2 file to the disk and wait for the disk to disappear. The firmware upgrade is successful.
*Both hands need to upgrade firmware. The firmware file is the same file.
*The firmware does not distinguish between TRRS version and C2C version, and both can be used.
*The firmware needs to be differentiated according to the version of the knob
The above type uses a firmware with "ecno1" in the name（ifwsofle_xxxxxxxx_econ1.uf2）
The above type uses a firmware with "ecno2" in the name（ifwsofle_xxxxxxxx_econ2.uf2）
3.Pay attention to static electricity
4.Firmware updates log
20240312
log：Enhanced RGB stability. If the RGB freezes, you can update it.
5.Code
It is advisable to modify the code if you have the programming ability, otherwise it may lead to unforeseen failures.
We also set a CLR_EE keycode (User->CLR_EE), which is recommended to be set to the keyboard after updating the firmware, and trigger it once, and the keyboard will clear the settings.
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