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63	63
64	64	== 2.3 UART Connection for SN50v3 base mother board ==
65	65
	66	+[[image:image-20230515102801-1.png]]
66	66
67	67
68	68	= 3. UART for Firmware Upgrade =
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74	74
75	75	Dragino Bootloader is a customizer made bootloader which support below features:
76	76
77		-* OTA Update via LoRa or BLE
78		-* OTA Batch update configure via LoRa or BLE
	78	+* OTA Update via LoRa
	79	+* OTA Batch update configure via LoRa
79	79
80	80	All Dragino End Devices base on LoRa ST v4 supports Dragino Bootloader.
81	81
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89	89
90	90	=== 3.1.3 How to upload bootloader to device? ===
91	91
	93	+If your is LoRa ST v4 base hardware and doesn't have bootloader. You can upload a bootloader to it.
92	92
	95	+**[[Downlink Link for OTA bootloader>>https://www.dropbox.com/sh/g4cp2lm85ovr8hu/AADX-4aEE-7SuKQAKTWrgKHIa?dl=0]].**
93	93
	97	+
	98	+**Update a firmware via TremoProgrammer:**
	99	+
	100	+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:
	101	+
	102	+ (% style="color:blue" %)**Step1**(%%): Set BOOT Switch to (% style="color:blue" %)**PROG**(%%) mode. PROG mode is for update firmware specially.
	103	+
	104	+ (% style="color:blue" %)**Step2**(%%): Press (% style="color:blue" %)**Reset**(%%) button, the module will then boot into program mode.
	105	+
	106	+ (% style="color:blue" %)**Step3**(%%): Use (% style="color:blue" %)**TremoProgrammer**(%%) to update the firmware to LoRaST v4.
	107	+
	108	+ (% style="color:blue" %)**Step4**(%%): Set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) position. Press Reset button again and module will run the new software.
	109	+
	110	+
	111	+Below is the method for how to update via (% style="color:blue" %)**TremoProgrammer:**
	112	+
	113	+1.  **TremoProgrammer** download link:  [[https:~~/~~/www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0>>url:https://www.dropbox.com/sh/j0qyc7a9ejit7jk/AACtx2tK4gEv6YFXMIVUM4dLa?dl=0]]
	114	+
	115	+2.  Run** (% style="color:blue" %)TremoProgrammer.(%%)**
	116	+
	117	+3.  Choose software and set the address to (% style="color:blue" %)**0x08000000**(%%).
	118	+
	119	+4. Rember to set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) after update finish. And you should be about to see Bootloader info in output after update
	120	+
	121	+[[image:image-20230515171651-1.png]]
	122	+
	123	+
	124	+
94	94	== 3.2 Update Firmware (Assume the device already have a bootloader) ==
95	95
96	96	=== 3.2.1 Update a firmware via Dragino bootloader ===
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119	119
120	120	2.  Run** (% style="color:blue" %)TremoProgrammer.(%%)**
121	121
122		-3.  Choose software and set the address to (% style="color:blue" %)**0x0800D000**(%%). (% style="color:red" %)VERY IMPORTANT: USE THIS ADDRESS FOR FIRMWARE WITHOUT BOOTLOADER
	153	+3.  Choose software and set the address to (% style="color:blue" %)**0x0800D000**(%%). (% style="color:red" %)VERY IMPORTANT for this address.
123	123
124	124	4. Rember to set BOOT Switch to (% style="color:blue" %)**FLASH**(%%) after update
125	125
126	126	[[image:image-20221224174341-4.png||height="471" width="374"]]
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128		-
129		-

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