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141	141
142	142	==== 3.1.3.2 LB series ====
143	143
144		-* Hardware: [[LA66 USB>>url:https://wiki.dragino.com/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LA66%20USB%20LoRaWAN%20Adapter%20User%20Manual/||_mstmutation="1"]]
145		-* Before using LA66 as -LB product to burn firmware, you need to burn the OTA_ firmware for LA66.
	144	+* Hardware: LA66 USB
	145	+[[image:image-20250213172807-1.png]][[image:image-20250213172928-2.png]]
	146	+* Before using LA66 as a firmware burning tool for -LB products, you need to burn OTA_firmware for LA66 first.
146	146	* The firmware burning method refers to the LA66 upgrade below.[[Click to redirect.>>https://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/#H3.1.3.3LA66upgrade]]
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148	148	The LA66 USB connects to the phone via the USB-Type c adapter.
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184	184	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
185	185
186	186	(% class="wikigeneratedid" %)
187		-⑤ After pressing the device's reset button, click start. **(If the upgrade does not start for a long time, you can press the device reset button again.If the user does not wish to open the casing, they can press and hold the KEY until the device flashes a green light; this action is equivalent to pressing the reset button.)**
	188	+⑤ After pressing the device's reset button, click start.
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	190	+(% class="wikigeneratedid" %)
	191	+**(If the upgrade does not start for a long time, you can press the device reset button again.**
	192	+
	193	+(% class="wikigeneratedid" %)
	194	+**If the user does not wish to open the casing, they can press and hold the KEY until the device flashes a green light; this action is equivalent to pressing the reset button.)**
	195	+
189	189	[[image:image-20250213142919-1.png||height="428" width="329"]]
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221	221	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
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223	223	(% class="wikigeneratedid" %)
224		-**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware. If you don't have a bootloader, you need to use the "Tremo Programmer" software to download it.**
	231	+**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware.**
225	225
226	226	(% class="wikigeneratedid" %)
	234	+**If you don't have a bootloader, you need to use the "[[Tremo Programmer>>https://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H3.1.3Howtouploadbootloadertodevice3F]]" software to download it.**
	235	+
	236	+(% class="wikigeneratedid" %)
227	227	② Click "START".
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229	229	(% class="wikigeneratedid" %)