diff --git a/PC_Client/PowerPico_Client_Setup_v0.0.2.exe b/PC_Client/PowerPico_Client_Setup_v0.0.2.exe
deleted file mode 100644
index 8c64199..0000000
Binary files a/PC_Client/PowerPico_Client_Setup_v0.0.2.exe and /dev/null differ
diff --git a/firmware/README.md b/firmware/README.md
new file mode 100644
index 0000000..033a2a6
--- /dev/null
+++ b/firmware/README.md
@@ -0,0 +1,5 @@
+这个文件夹存放的是PowerPico-V2 USB版本的BootLoader和APP固件。
+
+请烧录BootLoader.hex之后，再用客户端通过ymodem协议烧录APP.bin。
+
+注意，烧录完BootLoader再装外壳，不然SWD烧录口再内部，拆外壳很麻烦的。