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HelTecAutomation · Sep 20, 2023 · 768c083 · 768c083
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diff --git a/doc/ready_to_use/hri-485x/source/index.rst b/doc/ready_to_use/hri-485x/source/index.rst
@@ -4,7 +4,8 @@ HRI-485x
 
 The HRI-485x series is a DTU device that converts the RS-485 bus to wireless data. Sub models achieve RS-485 data to LTE (Cat. 1/Cat. 4), private LoRa, standardLoRaWAN, Ethernet, etc. communications method. 
 
-![](img/13.png)
+.. image:: ./img/13.png
+   :align: center 
 
 **HRI-485x have following main features:**
 

diff --git a/doc/ready_to_use/hri-485x/source/ota_upgrade.md b/doc/ready_to_use/hri-485x/source/ota_upgrade.md
@@ -14,7 +14,7 @@ Switch on the power supply, press the button to enter the configuration mode, an
 ## Enter the configuration page
 Locate the device hotspot and connect to it. Enter 192.168.4.1 on the web page to go to the device configuration page. 
 
-```{Tip}If you forget how to access the diagram configuration page, see [Quick Start](https://docs.heltec.org/en/ready_to_use/hri-485x/quick_start.html)
+```{Tip} If you forget how to access the diagram configuration page, see [Quick Start](https://docs.heltec.org/en/ready_to_use/hri-485x/quick_start.html).
 
 ```
 ## Firmware upgrade