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11	11	This instruction shows how to upgrade firmware for Dragino products base on STM32 solution. The upgrade can use 2 hardware connections: (% style="color:blue" %)**UART upgrade**(%%) or (% style="color:blue" %)**ST Link v2 upgrade**(%%). Some models supports both methods and some only one of them.
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	14	+
14	14	= 2. Hardware Upgrade Method Support List =
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16	16
17	17	(% border="1" style="background-color:#ffffcc; color:green; width:891.222px" %)
18	18	|=(% colspan="3" style="width: 888px;" %)Dragino STM32 base hardware Upgrade Methods
19		-|(% style="width:444px" %)**Model**|(% style="width:239px" %)**UART Connection**|(% style="width:204px" %)**ST-Link Connection**
20		-|(% style="width:444px" %)[[LSN50 v1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/128-lsn50.html]], [[LoRa ST>>url:http://www.dragino.com/products/lora/item/127-lora-st.html]],|(% style="width:239px" %)Hardware Connect Photo|(% style="width:204px" %)Hardware Connect Photo
21		-|(% style="width:444px" %)[[LGT92>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/142-lgt-92.html]], [[LBT1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/165-lbt1.html]]|(% style="width:239px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.2LGT922FLBT1ST-Linkv2Connection"]]
22		-|(% style="width:444px" %)[[LT-33222-L>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/138-lt-33222-l.html]], [[LT-22222>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]|(% style="width:239px" %)Hardware Connect Photo|(% style="width:204px" %)×
23		-|(% style="width:444px" %)[[LHT65>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/151-lht65.html]]|(% style="width:239px" %)×|(% style="width:204px" %)Hardware Connect Photo
24		-|(% style="width:444px" %)[[RS485-LN>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/154-rs485-ln.html]]|(% style="width:239px" %)Hardware Connect Photo|(% style="width:204px" %)×
25		-|(% style="width:444px" %)[[LSN50 v2>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/155-lsn50-v2.html]], [[NBSN95>>url:http://www.dragino.com/products/nb-iot/item/163-nbsn95.html]],[[LSE01>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/159-lse01.html]],[[LDDS20>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/164-ldds20.html]], [[LDS03A>>https://www.dragino.com/products/lorawan-nb-iot-door-sensor-water-leak/item/196-lds03a.html]](((
26		-[[LDDS75>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/161-ldds75.html]]
27		-)))|(% style="width:239px" %)[[Hardware Connect Photo>>||anchor="H3.1.2LSN50v22FLSN50v2-D222FLSN50v2-D23"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.1LSN50v22FLSN50v2-D222FLSN50v2-D23Type"]]
28		-|(% style="width:444px" %)[[LAQ4>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/174-laq4.html]]|(% style="width:239px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.3LAQ4ST-Linkv2Connection"]]
29		-|(% style="width:444px" %)[[RS485-BL>>url:https://www.dragino.com/products/lora-lorawan-end-node/item/167-rs485-bl.html]], [[LDDS75>>https://www.dragino.com/products/distance-level-sensor/item/161-ldds75.html]],[[LLDS12>>url:https://www.dragino.com/products/distance-level-sensor/item/185-llds12.html]],[[LDDS20>>https://www.dragino.com/products/distance-level-sensor/item/164-ldds20.html]],[[LSE01>>https://www.dragino.com/products/agriculture-weather-station/item/159-lse01.html]],[[WSC1-L>>https://www.dragino.com/products/agriculture-weather-station/item/206-wsc1-l.html]],[[GroPoint Air>>https://www.dragino.com/products/agriculture-weather-station/item/227-gropoint-air.html]]|(% style="width:239px" %)[[Hardware Connection Photo>>||anchor="H3.1.3RS485-BL2FLDDS752FLDDS202FLSE01"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.4RS485-BL2FLDDS752FLDDS202FLSE01"]]
30		-|(% style="width:444px" %)[[LTC2>>url:https://www.dragino.com/products/temperature-humidity-sensor/item/170-ltc2.html]]|(% style="width:239px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.5LTC2"]]
	20	+|(% style="width:284px" %)**Model**|(% style="width:409px" %)**UART Connection**|(% style="width:204px" %)**ST-Link Connection**
	21	+|(% style="width:284px" %)[[LSN50 v1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/128-lsn50.html]], [[LoRa ST>>url:http://www.dragino.com/products/lora/item/127-lora-st.html]],|(% style="width:409px" %)Hardware Connect Photo|(% style="width:204px" %)Hardware Connect Photo
	22	+|(% style="width:284px" %)[[LGT92>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/142-lgt-92.html]], [[LBT1>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/165-lbt1.html]]|(% style="width:409px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.2LGT922FLBT1ST-Linkv2Connection"]]
	23	+|(% style="width:284px" %)[[LT-33222-L>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/138-lt-33222-l.html]], [[LT-22222>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/156-lt-22222-l.html]]|(% style="width:409px" %)Hardware Connect Photo|(% style="width:204px" %)×
	24	+|(% style="width:284px" %)[[LHT65>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/151-lht65.html]]|(% style="width:409px" %)×|(% style="width:204px" %)Hardware Connect Photo
	25	+|(% style="width:284px" %)[[RS485-LN>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/154-rs485-ln.html]]|(% style="width:409px" %)Hardware Connect Photo|(% style="width:204px" %)×
	26	+|(% style="width:284px" %)[[LSN50v2>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/155-lsn50-v2.html]], [[NBSN95>>url:http://www.dragino.com/products/nb-iot/item/163-nbsn95.html]],[[LSE01>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/159-lse01.html]],[[LDDS20>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/164-ldds20.html]], [[LDS03A>>https://www.dragino.com/products/lorawan-nb-iot-door-sensor-water-leak/item/196-lds03a.html]],[[LDDS75>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/161-ldds75.html||style="background-color: rgb(255, 255, 204);"]]|(% style="width:409px" %)[[Hardware Connect Photo>>||anchor="H3.1.2LSN50v22FLSN50v2-D222FLSN50v2-D23"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.1LSN50v22FLSN50v2-D222FLSN50v2-D23Type"]]
	27	+|(% style="width:284px" %)[[LAQ4>>url:http://www.dragino.com/products/lora-lorawan-end-node/item/174-laq4.html]]|(% style="width:409px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.3LAQ4ST-Linkv2Connection"]]
	28	+|(% style="width:284px" %)(((
	29	+[[RS485-BL>>url:https://www.dragino.com/products/lora-lorawan-end-node/item/167-rs485-bl.html]],
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	31	+[[LDDS75>>https://www.dragino.com/products/distance-level-sensor/item/161-ldds75.html]],[[LLDS12>>url:https://www.dragino.com/products/distance-level-sensor/item/185-llds12.html]],[[LDDS20>>https://www.dragino.com/products/distance-level-sensor/item/164-ldds20.html]],[[LSE01>>https://www.dragino.com/products/agriculture-weather-station/item/159-lse01.html]],
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	33	+[[WSC1-L>>https://www.dragino.com/products/agriculture-weather-station/item/206-wsc1-l.html]],[[GroPoint Air>>https://www.dragino.com/products/agriculture-weather-station/item/227-gropoint-air.html]]
	34	+)))|(% style="width:409px" %)[[Hardware Connection Photo>>||anchor="H3.1.3RS485-BL2FLDDS752FLDDS202FLSE01"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.4RS485-BL2FLDDS752FLDDS202FLSE01"]]
	35	+|(% style="width:284px" %)[[LTC2>>url:https://www.dragino.com/products/temperature-humidity-sensor/item/170-ltc2.html]]|(% style="width:409px" %)×|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.5LTC2"]]
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35	35	= 3. UART Upgrade Guide =
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52	52	Connection for LSN50 Type V2
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	58	+
55	55	=== 3.1.3 RS485-BL/LDDS75/LDDS20/LSE01 ===
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73		-
74	74	== 3.2 Upgrade Steps ==
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90	90	(% style="color:blue" %)**Step 4: **(%%)Set The device into (% style="color:#037691" %)**ISP Mode**(%%). Then Press the (% style="color:#037691" %)**Reset Button**(%%), In the Flash tool, click next and the tool will detect the board type.
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93		-(% style="color:red" %)**Note:**  (%%)ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.
	96	+(% style="color:red" %)**Note:** ** ISP Mode can be a switch or a button, depends on the product. The device only need to be in ISP mode when press the reset button for UART Upgrade. So if the device is of a button type ISP mode, user can release the ISP button after press the reset button.**
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94	94	)))
95	95
96	96	[[image:image-20220526174302-11.png]]
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127	127
128	128	== 3.3 Trouble shooting ==
129	129
	135	+
130	130	=== 3.3.1 General Check List ===
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	149	+
143	143	== 3.4 Flash Loader ~-~- Unable to Load data from this file ==
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155	155	(((
156	156	The previous LSN50 firmware file is stored in github. If user use right click ~-~-> Save As to get the hex file. This error will happen. Now the LSN50 firmware file has been moved to [[LSN50 Firmware>>url:http://www.dragino.com/downloads/index.php?dir=LSN50-LoRaST/Firmware/]] to avoid this happen.
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159	159	)))
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	205	+
197	197	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
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202	202	Connection to LAQ4
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	214	+
205	205	=== 4.1.4 RS485-BL/LDDS75/LDDS20/LSE01 ===
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	233	+
223	223	=== 4.1.5 LTC2 ===
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228	228	Connection for LTC2 base mother board
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231		-Connection:
	242	+**Connection:**
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233	233	* ST-LINK v2 GND  <~-~->  LTC2 GND
234	234	* ST-LINK v2 RESET  <~-~->  LTC2 NRST
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	251	+
240	240	== 4.2 ST-Link Upgrade Guide ==
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278	278	ST-Link v2 Upgrade
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	293	+
281	281	== 4.3 Trouble Shootings ==
282	282
283	283	=== 4.3.1 ST-Link v2 can not detect the hardware ===
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288	288	1. Make sure see the LED blink on the ST-Link and release the reset button during blinking.
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	304	+
290	290	(% style="color:#4f81bd" %)**Possible Issue 2:**
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292	292	1. There are different version ST-Link v2. The white one as below is the most stable and recommended one.
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293	293	1. The white version ST-Link v2 such as below photo has different hardware version. The original one doesn’t have 3.3v on pin 1/2 and the clone one has 3.3v on pin 1/2. User has to short pin19 (VDD 3.3v) and pin 1/2 (TVCC) for the original one so pin 1/2 has 3.3v power. Otherwise, the original one might have problem to upload firmware to End Node.
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	311	+
296	296	[[image:image-20220526175418-21.png]]
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298	298	ST-Link upload issue
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303	303	1. The ST-Link adapter has issue in the RESET pin. this happens for the LHT65 model where the update request use the reset pin of ST-Link.We see this issue happen in below ST-LINK.
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	322	+
305	305	[[image:image-20220526175708-22.png]]
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307	307	(((
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327	327	)))
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	348	+
330	330	=== 4.3.2 ST-Link v2 detect the hardware but disconnect after click OK ===
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