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1		-{{box cssClass="floatinginfobox" title="**Contents**"}}
2		-{{toc/}}
3		-{{/box}}
	1	+= 1. Introduction =
4	4
5		-= Paragraph 1 =
	3	+This article shows the firmware upgrade method and troubleshooting for the below models Dragino sensors.
6	6
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	5	+= 2. Model and Connection =
8	8
9		-== Sub-paragraph ==
	7	+== 2.1 LDS01/LWL01 ==
10	10
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	9	+[[Firmware Location>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
12	12
13		-== Sub-paragraph ==
	11	+Pin Mapping:
14	14
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	13	+[[image:https://wiki.dragino.com/images/thumb/e/e3/ASR_Upgrade_1.png/600px-ASR_Upgrade_1.png||height="298" width="566"]]
16	16
17		-=== Sub-sub paragraph ===
	15	+LDS01/LWL01 Pin Mapping
18	18
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	17	+DAP-Link Connection:
20	20
	19	+[[image:https://wiki.dragino.com/images/thumb/7/79/ASR_Upgrade_2.jpg/600px-ASR_Upgrade_2.jpg||height="379" width="504"]]
21	21
22		-= Paragraph 2 =
	21	+Connect DAP-Link
	22	+
23	23
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	24	+== 2.2 LDS02/LWL02 ==
25	25
26		-== Sub-paragraph ==
	26	+[[Firmware Location(same as LDS01)>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDS01/Firmware/]]
27	27
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	28	+Pin Mapping:
29	29
30		-== Sub-paragraph ==
	30	+[[image:https://wiki.dragino.com/images/thumb/8/8b/ASR_Upgrade_LDS02_1.png/600px-ASR_Upgrade_LDS02_1.png||height="256" width="600"]]
31	31
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	32	+LDS02/LDS02 v2.0 Pin Mapping
	33	+
	34	+[[image:https://wiki.dragino.com/images/thumb/1/1c/ASR_Upgrade_LDS02_2.png/600px-ASR_Upgrade_LDS02_2.png||height="246" width="547"]]
	35	+
	36	+LDS02/LDS02 v2.2 Pin Mapping
	37	+
	38	+
	39	+== 2.3 LHT52 ==
	40	+
	41	+[[Firmware Location>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LHT52/Firmware/]]
	42	+
	43	+[[image:https://wiki.dragino.com/images/thumb/e/e0/ASR_Upgrade_LHT52_1.png/600px-ASR_Upgrade_LHT52_1.png||height="136" width="186"]]
	44	+
	45	+LHT52 Pin Mapping
	46	+
	47	+= 3. How to Upgrade =
	48	+
	49	+== 3.1 Use DAP-Link and Connect to the Device as above photos ==
	50	+
	51	+We need to connect VDD，GND，SWCLK，SWDIO to DAP-Link.
	52	+
	53	+* Connection method：
	54	+
	55	+* GND-GND,
	56	+
	57	+* VDD-3.3V,
	58	+
	59	+* SWCLK-CLK,
	60	+
	61	+* SWDIO-SWD
	62	+
	63	+[[image:https://wiki.dragino.com/images/8/81/DAPlink.png||alt="DAPlink.png" height="539" width="334"]]
	64	+
	65	+
	66	+== 3.2 Install PSoCProgrammer 3.27.1 ==
	67	+
	68	+Download Link: [[PSoCProgrammer3.27.1>>url:https://www.dragino.com/downloads/index.php?dir=tools/]]
	69	+
	70	+And then use PSoCProgrammer to upgrade the firmware (must use this version: PSoCProgrammer3.27.1)
	71	+
	72	+[[image:https://wiki.dragino.com/images/0/0f/Ppp1.png||alt="Ppp1.png" height="68" width="318"]]
	73	+
	74	+
	75	+== 3.3 Download Sensor Firmware ==
	76	+
	77	+Downlink sensor firmware to prepare the update
	78	+
	79	+
	80	+== 3.4 Upgrade Firmware ==
	81	+
	82	+Open PSOC Programmer, select the default configuration, no need to modify
	83	+
	84	+[[image:https://wiki.dragino.com/images/thumb/9/94/Ppp10.png/600px-Ppp10.png||alt="Ppp10.png" height="198" width="600"]]
	85	+
	86	+Click the file icon to select the software to be burned：
	87	+
	88	+[[image:https://wiki.dragino.com/images/thumb/d/d0/Ppp11.png/600px-Ppp11.png||alt="Ppp11.png" height="218" width="600"]]
	89	+
	90	+[[image:https://wiki.dragino.com/images/thumb/e/ec/Ppp12.png/600px-Ppp12.png||alt="Ppp12.png" height="265" width="600"]]
	91	+
	92	+
	93	+Click the download icon, and the progress bar as shown in the figure below will appear. When PASS appears, it proves that the burning is successful.
	94	+
	95	+[[image:https://wiki.dragino.com/images/thumb/e/e2/Ppp13.png/600px-Ppp13.png||alt="Ppp13.png" height="337" width="600"]]
	96	+
	97	+[[image:https://wiki.dragino.com/images/thumb/6/6f/Ppp14.png/600px-Ppp14.png||alt="Ppp14.png" height="338" width="600"]]
	98	+
	99	+It is very important to press the reset button after the upgrade., this is to set the device to work in Low Power mode
	100	+
	101	+*If you change different LoRa Frequency Bands/Region, you need using AT+FDR command to restore factory data after program success
	102	+
	103	+= 4. Trouble Shooting =
	104	+
	105	+== 4.1 Unable to detect upgrade ==
	106	+
	107	+* Try to shot the bootloader pin to GND and reset the device. So the device will runs in bootloader mode.
	108	+* Or use AT+IREBOOT=7 to set the device to work in bootloader mode.