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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 49.3
edited by Mengting Qiu
on 2025/07/29 13:58
Change comment: There is no comment for this version
To version 47.1
edited by Mengting Qiu
on 2025/05/20 15:54
Change comment: There is no comment for this version

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322 322  After completing the certificate configuration, Burn the [[bootloader>>https://www.dropbox.com/sh/u0uzvvnn58yrie4/AAAvvF_KRveNgmDejzp23ziLa/NB-IoT/Bootloader?dl=0&subfolder_nav_tracking=1]] firmware first, then re-burn the original working [[firmware>>https://www.dropbox.com/sh/u0uzvvnn58yrie4/AACREHllkTe0rATD4ZOqddyga/NB-IoT?dl=0]].
323 323  
324 324  
325 -==== 4.1.2.5 Overwriting Certificates on -NB/-NS Models ====
326 -
327 -
328 -The -NB/-NS modules (BC660K) do not support clearing certificates via AT commands or firmware updates.
329 -
330 -To effectively "clear" existing certificates, users may overwrite them with arbitrary data by following these steps:
331 -
332 -1. Overwrite Certificates:
333 -
334 -
335 -
336 -
337 337  == 4.2  For -CB /-CS model ==
338 338  
339 339  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===
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349 349  
350 350  Methods to Update Firmware:
351 351  
340 +* (Recommended way) OTA firmware update via BLE: [[**Instruction**>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
341 +
352 352  * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
353 353  
354 354  === 4.2.2 Configure certificate ===