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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		-* [[Click to get the firmware.>>https://www.dropbox.com/scl/fo/ztlw35a9xbkomu71u31im/ALF3WtzilGPi-2nOdtQw1Z4/Utility/Sensor%20Manager%20Utility/OTA_Firmware?dl=0&rlkey=ojjcsw927eaow01dgooldq3nu&subfolder_nav_tracking=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	151	The LA66 USB connects to the phone via the USB-Type c adapter.
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175	175	Follow the steps in order:
176	176
177	177	(% class="wikigeneratedid" %)
178		-① Enter the DUIEI,t
	175	+① Enter the DUIEI,
179	179
180	180	(% class="wikigeneratedid" %)
181	181	② Enter the PIN (**the PIN is the last 8 bytes of APPSKEY**),
182	182
183	183	(% class="wikigeneratedid" %)
184		-③ Select the LoRa frequency to match the original frequency of the node,
	181	+③ Select the LoRa frequency,
185	185
186	186	(% class="wikigeneratedid" %)
187	187	④ Choose the upgrade file,(% style="color:red" %)**(The firmware upgrade file format only supports .bin files)**
188	188
189	189	(% class="wikigeneratedid" %)
190		-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.)**
191	191
	189	+[[image:image-20250111151237-1.png||_mstalt="427752"]]
	190	+
192	192	(% class="wikigeneratedid" %)
193		-**(If the upgrade does not start for a long time, you can press the device reset button again.**
	192	+For device tools version 1.4 and above, LB upgrade adds the following features:
194	194
195	195	(% class="wikigeneratedid" %)
196		-**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	+(1) FRE1: display based on Frequency Band;
197	197
198		-[[image:image-20250213142919-1.png||height="428" width="329"]]
	197	+(% class="wikigeneratedid" %)
	198	+(2) FRE2: provide default value, generally do not modify;
199	199
	200	+(% class="wikigeneratedid" %)
	201	+(3) Output Power: Drop-down optional 2～22.
200	200
	203	+(% class="wikigeneratedid" %)
	204	+If there are no special needs, all the above functions do not need to be changed, and the default can be.
	205	+
	206	+
201	201	(% class="wikigeneratedid" id="H-2" %)
202	202	When the upgrade is complete, it will prompt:"**update successfully**".
203	203
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230	230	① Click "SELECT UPGRADE FILE" to choose the firmware to upgrade.
231	231
232	232	(% class="wikigeneratedid" %)
233		-**In order to ensure that the LA66 USB works properly, make sure that there is a corresponding bootloader before updating the firmware.**
	239	+**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.**
234	234
235	235	(% class="wikigeneratedid" %)
236		-**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. Click to get **[[bootlooder>>url:https://wiki.dragino.com/xwiki/bin/download/Main/BLE%20Bluetooth%20Remote%20Configure/WebHome/LoRa_OTA_Bootloader_v1.4.bin?rev=1.1]].
237		-
238		-(% class="wikigeneratedid" %)
239	239	② Click "START".
240	240
241	241	(% class="wikigeneratedid" %)

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