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1		-XWiki.kai
	1	+XWiki.Bei

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114	114
115	115	= 4. Connect to AWS using Dragino-NB device =
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	117	+
	118	+(% id="cke_bm_37736S" style="color:red; display:none" %)** **(% style="color:red" %)**Note: **(%%)In order to avoid problems with certificate writing, you need to set the serial port assistant to automatically add a newline character when sending commands, if there is no such newline character, the certificate written will be invalid.(Using the serial port assistant as an example)
	119	+
	120	+[[image:image-20240822090554-1.png||height="501" width="656"]]
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	122	+
117	117	== 4.1 For -NB /-NS model ==
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119	119	=== 4.1.1 Upgrade the firmware to configure TTS firmware to set the certificate ===
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135	135
136	136	=== 4.1.2 Configure certificate ===
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138		-(% style="color:red" %)**Note: **(%%)In order to avoid problems with certificate writing, you need to set the serial port assistant to automatically add a newline character when sending commands, if there is no such newline character, the certificate written will be invalid.(Using the serial port assistant as an example)
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140		-[[image:image-20240814155410-1.png||height="328" width="563"]]
141		-
142	142	After upgrade the firmware, the serial port displays as follows：
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144	144	[[image:image-20240528174330-13.png||height="286" width="568"]]
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324	324	==== 4.1.2.4 Re-upgrade the firmware ====
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327		-After the certificate configuration is completed, Re-upgrade to the firmware you originally used.
	330	+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]].
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329	329
330	330	== 4.2  For -CB /-CS model ==
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622	622	[[image:image-20240528175133-19.png||height="563" width="1022"]]
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624	624	[[image:image-20240528175154-20.png||height="752" width="1042"]]
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