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...	...	@@ -54,7 +54,46 @@
54	54	[[image:image-20220530002453-3.png||height="262" width="493"]]
55	55
56	56
	57	+= Use AT Command =
57	57
	59	+== Access AT Commands ==
	60	+
	61	+GroPoint Air supports AT Command set in the stock firmware. You can use a USB to TTL adapter to connect to GroPoint Air for using AT command, as below.
	62	+
	63	+[[image:1654593668970-604.png]]
	64	+
	65	+**Connection:**
	66	+
	67	+(% style="background-color:yellow" %)** USB TTL GND <~-~-~-~-> GND**
	68	+
	69	+(% style="background-color:yellow" %)** USB TTL TXD <~-~-~-~-> UART_RXD**
	70	+
	71	+(% style="background-color:yellow" %)** USB TTL RXD <~-~-~-~-> UART_TXD**
	72	+
	73	+
	74	+In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for GroPoint Air. GroPoint Air will output system info once power on as below:
	75	+
	76	+ [[image:1654653659449-932.png]]
	77	+
	78	+Valid AT Command please check [[Configure Device>>||anchor="H3.ConfigureLLMS01viaATCommandorLoRaWANDownlink"]].
	79	+
	80	+
	81	+= FAQ =
	82	+
	83	+== How to change the LoRa Frequency Bands/Region ==
	84	+
	85	+You can follow the instruction here: [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome||anchor="H2.HardwareUpgradeMethodSupportList"]].
	86	+When downloading the images, choose the required image file for download. ​
	87	+
	88	+
	89	+= Trouble Shooting =
	90	+
	91	+== AT Commands input doesn’t work ==
	92	+
	93	+In case if user can see the console output but can’t type input to the device. Please check if you already include the (% style="color:green" %)**ENTER**(%%) while sending out the command. Some serial tool doesn’t send (% style="color:green" %)**ENTER**(%%) while pressing the send key, user need to add ENTER in their string.
	94	+
	95	+
	96	+
58	58	= Order Info =
59	59
60	60	Part Number: **GROPOINT AIR-M-XX**
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70	70	* **IN865**: LoRaWAN IN865 band
71	71	* **CN470**: LoRaWAN CN470 band
72	72
73		-
74	74	= ​Packing Info =
75	75
76	76	**Package Includes:  **
...	...	@@ -77,7 +77,6 @@
77	77
78	78	* GroPoint Air-M x 1
79	79
80		-
81	81	**Dimension and weight:**
82	82
83	83	* Device Size: cm
...	...	@@ -85,5 +85,4 @@
85	85	* Package Size / pcs : cm
86	86	* Weight / pcs : g
87	87
88		-
89	89