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Last modified by Mengting Qiu on 2025/07/29 15:24
From version 48.1
edited by Bei Jinggeng
on 2025/07/16 14:22
Change comment: There is no comment for this version
To version 49.4
edited by Mengting Qiu
on 2025/07/29 13:59
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 +
338 +
325 325  == 4.2  For -CB /-CS model ==
326 326  
327 327  === 4.2.1 Upgrade the firmware to configure TLS firmware to set the certificate ===