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141	141
142	142	==== 3.1.3.2 LB series ====
143	143
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.
147		-* If you have never downloaded LA66 OTA DongleV1.0 to your LA66, you can directly upgrade the LA66 OTA DongleV1.1 program from your phone using the following method.
148		-* [[bootlooder>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LoRa_OTA_Bootloader_v1.4.bin?rev=1.1]] and [[OTA_firmware>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LA66%20OTA%20DONGLE%20v1.1.bin?rev=1.1]].
	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.
149	149	* 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]]
150	150
151		-
152	152	The LA66 USB connects to the phone via the USB-Type c adapter.
153	153
154	154	[[image:image-20241207113056-9.png||_mstalt="431366" height="240" width="555"]]
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188	188	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
189	189
190	190	(% class="wikigeneratedid" %)
191		-⑤ After pressing the device's reset button, click start.
	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.)**
192	192
193		-(% class="wikigeneratedid" %)
194		-**(If the upgrade does not start for a long time, you can press the device reset button again.**
195		-
196		-(% class="wikigeneratedid" %)
197		-**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.)**
198		-
199	199	[[image:image-20250213142919-1.png||height="428" width="329"]]
200	200
201	201
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231	231	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
232	232
233	233	(% class="wikigeneratedid" %)
234		-**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware.**
	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.**
235	235
236	236	(% class="wikigeneratedid" %)
237		-**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.**
238		-
239		-(% class="wikigeneratedid" %)
240	240	② Click "START".
241	241
242	242	(% class="wikigeneratedid" %)

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