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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 49.5
edited by Mengting Qiu
on 2025/07/29 14:00
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 -Use the standard AT commands (AT+CACERT, AT+CLICERT, AT+CLIKEY) to write non-certificate data (e.g., random strings like 123456).
335 -Example:
336 -
337 -AT+CACERT=123456}
338 -
339 -AT+CLICERT=123456}
340 -
341 -AT+CLIKEY=123456}
342 -
343 -
344 -
345 345  == 4.2  For -CB /-CS model ==
346 346  
347 347  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===
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357 357  
358 358  Methods to Update Firmware:
359 359  
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 +
360 360  * Update through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
361 361  
362 362  === 4.2.2 Configure certificate ===