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Last modified by Mengting Qiu on 2025/06/17 09:18
From version 20.1
edited by Edwin Chen
on 2023/05/20 10:32
Change comment: There is no comment for this version
To version 18.1
edited by Edwin Chen
on 2023/05/19 10:32
Change comment: Uploaded new attachment "image-20230519102907-2.png", version {1}

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101 101  * Connect the device to PC via UART interface.
102 102  * Make sure power off or update the firmware back to original firmware , because the LA66 USB OTA fimware is not low power consumption firmware. it will consume the battery very fast.
103 103  
104 -== 4.2 Where to find OTA Password? ==
105 -
106 -Each device has a shipped label with OTA Password which is 16 chars. like below. If user don't find this, please send us a photo for the device with Dev EUI to [[support@dragino.com>>mailto:support@dragino.com]] . and we will search the password for you.
107 -
108 -[[image:image-20230519102907-2.png||height="286" width="580"]]
109 -
110 -
111 -== 4.3 How about if i upgrade a crashed firmware via OTA update? ==
112 -
113 -OTA update is done via Bootloader and only change the firmware partition. So update a crash firmware via OTA update won't destroy bootloader and user can use OTA method to update again. Here are notice:
114 -
115 -1. OTA update frequency depend on the firmware frequency. If there is no frequency in the firmware. Bootloader will use EU868 as default frequency.
116 -1. OTA update require a reset or reactivate action. If the crash firmware doesn't have them work, user need to manuall push the physic reset button on the PCB or power off/on device.
117 -
118 -
119 -
120 120  = 5. OTA Tool Known Bug: =
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122 122