diff --git a/docs/en/module/sim800.md b/docs/en/module/sim800.md
index 1d53ac41..69df384c 100644
--- a/docs/en/module/sim800.md
+++ b/docs/en/module/sim800.md
@@ -77,30 +77,9 @@
 
 ### 1. Arduino
 
-Use with Arduino, please click [here](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L)
-<!-- -  **[SIM800L Info](http://simcomm2m.com/En/module/detail.aspx?id=138)**
-   (SIM800L) -->
+[Sample code for sending SMS](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L)
 
-<!-- ## Example
-
-### 1. Arduino IDE
-
-Here's a example using SIM800 for sending SMS
-
-```arduino
-/*
-* Master.ino
-*/
-Serial2.begin(9600, SERIAL_8N1, 16, 17);
-
-/* LoRaWAN Init */
-//entry test mode
-Serial2.print("AT+Mode=Test");
-//Configure the modem,like Freq, SF, BW, Preamble length, TX output power
-Serial2.print("AT+TEST=RFCFG,472.3,8,250,8,8,20");
-//send data as HEX format
-Serial2.print("AT+TEST=TXLRPKT,"00 00 01 00 00 AF 80 07 02 00 00 39"");
-``` -->
+[AT transparent transmission + network test](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L/SIM800L_FactoryTest)
 
 <script>
 
diff --git a/docs/en/unit/esp32cam.md b/docs/en/unit/esp32cam.md
index 4caefcc2..a3f173bd 100644
--- a/docs/en/unit/esp32cam.md
+++ b/docs/en/unit/esp32cam.md
@@ -106,7 +106,7 @@ what this software can do?
 | *SPQ2410*            | *ESP32Cam*  |
 | :-----------: | :------:  |
 | OUT           | IO32      |
-
+ 
 **NOTE:**
 
 1. **Camera Power Down** pin does not need to be connected to ESP32 GPIO. Instead it may be pulled down to ground with 10 kOhm resistor.
@@ -117,6 +117,11 @@ what this software can do?
 
 - **Datasheet** - [ESP32](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/core/esp32_datasheet_en.pdf) - [OV2640](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/unit/OV2640DS_en.pdf)
 
+
+## Schematic
+
+- **[Schematic](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/schematic/esp32-cam/M5CAM-ESP32-A1-POWER.pdf)**
+
 ## Example
 
 ### Firmware
diff --git a/docs/zh_CN/module/sim800.md b/docs/zh_CN/module/sim800.md
index a0fea5c1..133d8e82 100644
--- a/docs/zh_CN/module/sim800.md
+++ b/docs/zh_CN/module/sim800.md
@@ -58,7 +58,7 @@
 
 <img src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/image/EasyLoader_logo.webp" width="100px" style="margin-top:20px">
 
-<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Module/EasyLoader_SIM800L_at.exe"><button type="button" class="btn btn-primary">点击下载EasyLoader</button></a>
+<a href="https://m5stack.oss-cn-shenzhen.aliyuncs.com/EasyLoader/Windows/MODULE/EasyLoader_SIM800L_MODULE.exe"><button type="button" class="btn btn-primary">点击下载EasyLoader</button></a>
 
 >1.EasyLoader是一个简洁快速的程序烧录器，每一个产品页面里的EasyLoader都提供了一个与产品相关的案例程序，通过简单步骤将其烧录至主控，能够进行一系列的功能验证.**(目前EasyLoader仅适用于Windows操作系统)**
 
@@ -70,7 +70,9 @@
 
 - **Arduino**
 
-[点击此处下载Arduino示例代码](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L)
+[发送短信示例代码](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L)
+
+[AT透传+网络测试](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/SIM800L/SIM800L_FactoryTest)
 
 ## 原理图
 
diff --git a/docs/zh_CN/unit/esp32cam.md b/docs/zh_CN/unit/esp32cam.md
index d664caa1..77a58826 100644
--- a/docs/zh_CN/unit/esp32cam.md
+++ b/docs/zh_CN/unit/esp32cam.md
@@ -161,7 +161,7 @@
 
 ## 原理图
 
-- **[原理图](https://github.com/m5stack/M5-Schematic/blob/master/Units/esp32-cam/M5CAM-ESP32-A1-POWER.pdf)**
+- **[原理图](https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/schematic/esp32-cam/M5CAM-ESP32-A1-POWER.pdf)**
 
 ## 案例程序