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39	39	[[image:image-20221224171304-3.png||height="545" width="863"]]
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41	41
42		-
43	43	= 3. UART for Firmware Upgrade =
44	44
45	45	== 3.1 General Instruction for UART update firmware ==
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47	47
48	48	LoRaSTv4 Base hardware support UART update firmware. the UART connection is the same as AT Command connection, with the need for two extra action. See below for the steps:
49	49
50		- **Step1**: Set BOOT Switch to **PROG** mode. PROG mode is for update firmware specially.
	49	+ (% style="color:blue" %)**Step1**(%%): Set BOOT Switch to (% style="color:blue" %)**PROG**(%%) mode. PROG mode is for update firmware specially.
51	51
52		- **Step2**: Press **Reset** button, the module will then boot into program mode.
	51	+ (% style="color:blue" %)**Step2**(%%): Press (% style="color:blue" %)**Reset**(%%) button, the module will then boot into program mode.
53	53
54		- **Step3**: Use **TremoProgrammer** to update the firmware to LoRaST v4.
	53	+ (% style="color:blue" %)**Step3**(%%): Use (% style="color:blue" %)**TremoProgrammer**(%%) to update the firmware to LoRaST v4.
55	55
56		- **Step4**: Set BOOT Switch to **FLASH** position. Press Reset button again and module will run the new software.
	55	+ (% style="color:blue" %)**Step4**(%%): Set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) position. Press Reset button again and module will run the new software.
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58	58
59		-Below is the method for how to update via **TremoProgrammer:**
	58	+Below is the method for how to update via (% style="color:blue" %)**TremoProgrammer:**
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61	61	1.  Software download link:  [[https:~~/~~/www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0>>url:https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0]]
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63		-2.  Run** TremoProgrammer.**
	62	+2.  Run** (% style="color:blue" %)TremoProgrammer.(%%)**
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65		-3.  Choose software and set the address to **0x0800D000**
	64	+3.  Choose software and set the address to (% style="color:blue" %)**0x0800D000**
66	66
67		-4. Rember to set BOOT Switch to FLASH after update
	66	+4. Rember to set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) after update
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69	69	[[image:image-20221224174341-4.png||height="471" width="374"]]
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75	75	Below shows the SIB board UART connection, reset button and BOOT Switch (Program Jumper) position. They can be used for firmware upgrade reference.
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77	77	[[image:image-20221224174605-6.png||height="569" width="880"]]
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