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33	33	)))|(% style="width:409px" %)[[Hardware Connection Photo>>||anchor="H3.1.3RS485-BL2FLDDS752FLDDS202FLSE01"]]|(% style="width:204px" %)[[Hardware Connect Photo>>||anchor="H4.1.4RS485-BL2FLDDS752FLDDS202FLSE01"]]
34	34	|(% 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"]]
35	35
36		-
37	37	= 3. UART Upgrade Guide =
38	38
39	39	== 3.1 Hardware Connection ==
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46	46	Connection for LSN50 v1
47	47
48	48
49		-=== 3.1.2 LSN50 v2/LSN50v2-D22/LSN50v2-D23 ===
	48	+=== 3.1.2 LSN50 v2/LSN50v2-D22/LSN50v2-D23/LSN50v2-S31B ===
50	50
51	51
52		-[[image:image-20220526173751-3.png||height="467" width="966"]]
	51	+[[image:image-20220526173751-3.png||height="467" width="966"]]a
53	53
	53	+[[image:image-20240201094036-1.jpeg||height="662" width="951"]]
	54	+
54	54	Connection for LSN50 Type V2
55	55
56	56
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74	74
75	75	* **Connect JP2 jumper (Yellow one), so device is power on.**
76	76
77		-
78	78	== 3.2 Upgrade Steps ==
79	79
80	80
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194	194
195	195	* **ST-LINK v2 SWDIO  <~-~->  Dupont Cable white pin**
196	196
197		-
198	198	=== 4.1.3 LAQ4 ST-Link v2 Connection ===
199	199
200	200
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223	223
224	224	* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
225	225
226		-
227	227	=== 4.1.5 LTC2 ===
228	228
229	229
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244	244
245	245	* **ST-LINK (VDD 3.3v,pin19)  <~-~->  ST-LINK (TVCC ,pin1) a wire to connect two pins of ST-Link together.**
246	246
247		-
248	248	= 4.2. Firmware upgrade using STM32 Cubeprogramer =
249	249
250	250