diff --git a/docs/en/core/m5stickv.md b/docs/en/core/m5stickv.md
index c1f1e4fb..2ff6c355 100644
--- a/docs/en/core/m5stickv.md
+++ b/docs/en/core/m5stickv.md
@@ -108,7 +108,7 @@ It is able to perform convolutional neural network calculations at low power con
| Camera |
- OV7740 |
+ OV7740(30W pixels) |
| FOV |
diff --git a/docs/en/module/comx_lorawan470.md b/docs/en/module/comx_lorawan470.md
index bea84934..d914d64c 100644
--- a/docs/en/module/comx_lorawan470.md
+++ b/docs/en/module/comx_lorawan470.md
@@ -87,7 +87,7 @@ An external power supply is provided (5V-12V input can be adjusted by switching
## Example
-- [Arduino code example](https://github.com/m5stack/M5Atom/tree/master/examples/ATOM_BASE/ATOM_Socket)
+- [Arduino code example](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/COM_LoRaWAN470)
## Video
diff --git a/docs/en/module/comx_lorawan915.md b/docs/en/module/comx_lorawan915.md
index 557919a6..20de7341 100644
--- a/docs/en/module/comx_lorawan915.md
+++ b/docs/en/module/comx_lorawan915.md
@@ -87,7 +87,7 @@ An external power supply is provided (5V-12V input can be adjusted by switching
## Example
-- [Arduino code example](https://github.com/m5stack/M5Atom/tree/master/examples/ATOM_BASE/ATOM_Socket)
+- [Arduino code example](https://github.com/m5stack/M5Stack/tree/master/examples/Modules/COM_LoRaWAN915)
## Video
diff --git a/docs/en/unit/unitv_ov7740.md b/docs/en/unit/unitv_ov7740.md
index 06f8288c..7c8dd005 100644
--- a/docs/en/unit/unitv_ov7740.md
+++ b/docs/en/unit/unitv_ov7740.md
@@ -101,7 +101,7 @@ It is equipped with two programmable keys and an RGB LED indicator on the front
| Image Sensor |
- OV2640 |
+ OV7740(30W pixels) |
| FOV |
diff --git a/docs/zh_CN/app/bala2.md b/docs/zh_CN/app/bala2.md
index d17d4d21..3ab67555 100644
--- a/docs/zh_CN/app/bala2.md
+++ b/docs/zh_CN/app/bala2.md
@@ -185,7 +185,7 @@
**下载完整代码 [点击此处](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Application/Bala2)**
-- **[教程&快速上手](en/quick_start/bala2/bala2_quick_start)**
+- **[教程&快速上手](zh_CN/quick_start/bala2/bala2_quick_start)**
+
diff --git a/docs/zh_CN/unit/unitv_ov7740.md b/docs/zh_CN/unit/unitv_ov7740.md
index fa5983cb..8cd0b83e 100644
--- a/docs/zh_CN/unit/unitv_ov7740.md
+++ b/docs/zh_CN/unit/unitv_ov7740.md
@@ -96,7 +96,7 @@
| 摄像头 |
- OV7740 |
+ OV7740(30W pixels) |
| FOV |