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39	39	[[image:image-20221224171304-3.png||height="545" width="863"]]
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	42	+
42	42	= 3. UART for Firmware Upgrade =
43	43
44	44	== 3.1 General Instruction for UART update firmware ==
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46	46
47	47	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:
48	48
49		- (% style="color:blue" %)**Step1**(%%): Set BOOT Switch to (% style="color:blue" %)**PROG**(%%) mode. PROG mode is for update firmware specially.
	50	+ **Step1**: Set BOOT Switch to **PROG** mode. PROG mode is for update firmware specially.
50	50
51		- (% style="color:blue" %)**Step2**(%%): Press (% style="color:blue" %)**Reset**(%%) button, the module will then boot into program mode.
	52	+ **Step2**: Press **Reset** button, the module will then boot into program mode.
52	52
53		- (% style="color:blue" %)**Step3**(%%): Use (% style="color:blue" %)**TremoProgrammer**(%%) to update the firmware to LoRaST v4.
	54	+ **Step3**: Use **TremoProgrammer** to update the firmware to LoRaST v4.
54	54
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.
	56	+ **Step4**: Set BOOT Switch to **FLASH** position. Press Reset button again and module will run the new software.
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57	57
58		-Below is the method for how to update via (% style="color:blue" %)**TremoProgrammer:**
	59	+Below is the method for how to update via **TremoProgrammer:**
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60	60	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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62		-2.  Run** (% style="color:blue" %)TremoProgrammer.(%%)**
	63	+2.  Run** TremoProgrammer.**
63	63
64		-3.  Choose software and set the address to (% style="color:blue" %)**0x0800D000**
	65	+3.  Choose software and set the address to **0x0800D000**
65	65
66		-4. Rember to set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) after update
	67	+4. Rember to set BOOT Switch to FLASH after update
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68	68	[[image:image-20221224174341-4.png||height="471" width="374"]]
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74	74	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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76	76	[[image:image-20221224174605-6.png||height="569" width="880"]]
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78		-
79		-