coder66固件（最新）

2022/11/02：出厂固件，默认支持VIA2.0版本以上 || Factory firmware, via version 2.0 or above is supported by default.

可以通过以下2种方式升级固件：

1：（推荐）UF2快捷刷机方式：

断开电池和USB，然后按住键盘左上角第一颗按键不松开，此时插入USB数据线，等待电脑上出现一个U盘（名字为“YRKB_UPDATE“或者”KB_FM“），此时放开第一颗按键，

然后将固件包中的“yandrstudio_ble_coder66ble_hotswap/solder_ble.uf2”这个文件复制到出现的U盘里面即可完成刷机，完成后建议重新拔插一次USB数据线。

2：通过VIA设置一个RESET按键进行刷机：

通过USB连接到键盘，并且连接到VIA软件上，任意找一个按键设置为“Reset”按键值（Reset按键在VIA软件”KEYMAP“功能的”SPECIAL“类别中），

然后按下这个按键，等待电脑上出现一个U盘，后续操作和方案1一样，刷机完成后重新连接VIA将"Reset"按键值改回原始值。

3：（危险操作）通过QMK Toolbox进行刷机：

断开电池和USB，打开QMK Toolbox软件，然后短接PCB背面的BOOT0和VCC焊盘，然后插入USB，等待QMK Toolbox识别到Stm32DFU后，

断开BOOT0和VCC的连接，然后选择固件“advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.bin”，点击QMK Toolbox的Flash按钮，等待更新完成后重新插入USB和电池。

4：（危险操作）拥有J-Link和ST-Link的高级玩家：

断开电池和USB，可以使用相应的串口下载工具，连接到PCB对应的下载焊盘处（共计4个GND，SWD，SWO，3V3），选择芯片STM32F401CCU6，

然后将文件“advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.bin”或者“advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.hex”下载到芯片中即可完成刷机。

=================================

You can update the keyboard firmware in the following 2 ways:

1: (recommend) uf2 fast flashing:

Disconnect the battery and USB, press and hold the first key in the upper left corner of the keyboard without releasing it.

Then, plug the USB cable and wait for a U disk (named "YRKB_UPDATE" or "KB_FM") to appear on the computer. 

At this time, release the first key.

Then, copy the file "yandrstudio_ble_coder66ble_hotswap/solder_ble.uf2" in this package to the U disk.

After the completion, it is recommended to replug the USB cable again.

2. Set a "Reset" button through VIA to flash the firmware:

Connect to the keyboard by USB, and connect to VIA software, and set any key as the "Reset" key (the "Reset" key is in the "SPECIAL" category of the "KEYMAP" function of VIA software).

Then press this button and wait for a U disk to appear on the computer. Follow-up operation is the same as that in method "1". After flashing, reconnect VIA to change the "Reset" key back to the original value.

3：(Dangerous operation) Flashing Firmware through QMK Toolbox:

Disconnect the battery and USB, open the QMK Toolbox software, then short-circuit the BOOT0 and VCC pads on the back of PCB,

then insert USB, and wait for QMK Toolbox to recognize Stm32DFU, then select the firmware "advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.bin",

click the Flash button of QMK Toolbox, and wait for the update to complete. After flashing, re-plug the USB and battery.

4: (Dangerous operation) Advanced players with J-Link and ST-Link

Disconnect the battery and USB, you can use the corresponding serial download tool to connect to the corresponding download pads of PCB (GND, SWD, SWO, 3V3), 

and select the chip STM32F401CCU6,

Then download the file "advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.bin" or "advance/yandrstudio_ble_coder66ble_hotswap/solder_ble_all.hex" into the chip.