diff --git a/firmware/hardware_test/lorac6_V1.0_850/firmware-c6-recv-850M.bin b/firmware/hardware_test/lorac6_V1.0_850/C6_Receive_868_BW125_OP22_CL140_SF8.bin
similarity index 64%
rename from firmware/hardware_test/lorac6_V1.0_850/firmware-c6-recv-850M.bin
rename to firmware/hardware_test/lorac6_V1.0_850/C6_Receive_868_BW125_OP22_CL140_SF8.bin
index 4055334..b773a0b 100644
Binary files a/firmware/hardware_test/lorac6_V1.0_850/firmware-c6-recv-850M.bin and b/firmware/hardware_test/lorac6_V1.0_850/C6_Receive_868_BW125_OP22_CL140_SF8.bin differ
diff --git a/firmware/hardware_test/lorac6_V1.0_850/firmware-c6-send-850M.bin b/firmware/hardware_test/lorac6_V1.0_850/C6_Transmit_868_BW125_OP22_CL140_SF8.bin
similarity index 62%
rename from firmware/hardware_test/lorac6_V1.0_850/firmware-c6-send-850M.bin
rename to firmware/hardware_test/lorac6_V1.0_850/C6_Transmit_868_BW125_OP22_CL140_SF8.bin
index 1363deb..d8c36bb 100644
Binary files a/firmware/hardware_test/lorac6_V1.0_850/firmware-c6-send-850M.bin and b/firmware/hardware_test/lorac6_V1.0_850/C6_Transmit_868_BW125_OP22_CL140_SF8.bin differ
diff --git a/firmware/hardware_test/lorac6_V1.0_850/README.MD b/firmware/hardware_test/lorac6_V1.0_850/README.MD
new file mode 100644
index 0000000..33428ff
--- /dev/null
+++ b/firmware/hardware_test/lorac6_V1.0_850/README.MD
@@ -0,0 +1,11 @@
+1. Tool download  [flash_download_tool](https://www.espressif.com/en/support/download/other-tools)
+
+
+2. "C6_Receive_868_BW125_OP22_CL140_SF8.bin" and "C6_Transmit_868_BW125_OP22_CL140_SF8.bin"
+ ，Reset board, open serial port print
+
+3. Set according to the picture 
+
+    ![](./SETTING.jpg)
+
+
diff --git a/firmware/hardware_test/lorac6_V1.0_850/SETTING.jpg b/firmware/hardware_test/lorac6_V1.0_850/SETTING.jpg
new file mode 100644
index 0000000..f2c9113
Binary files /dev/null and b/firmware/hardware_test/lorac6_V1.0_850/SETTING.jpg differ