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5	5
6	6	= 1. Burn the Configure certificate. =
7	7
8		-**hex** firmware.
9	9
	9	+(% style="color:blue" %)**hex firmware.**
	10	+
10	10	After burning, the serial port displays as follows：
11	11
12	12	[[image:image-20240520093014-1.png]]
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	17	+
	18	+
16	16	= 2. Configure CA certificate. =
17	17
	21	+
18	18	Please input the certificate in PEM format for the user. (The format of the image is entered casually, not in PEM format.)
19	19
20		-Use the AT command **AT+CACERT** as follows:
	24	+Use the AT command (% style="color:blue" %)**AT+CACERT** (%%)as follows:
21	21
22	22	The following certificates are for free input. Please enter the complete certificate when using them.
23	23
24	24	[[image:image-20240520093355-2.png]]
25	25
26		-If the configuration succeeds, the message "CA certificate configuration succeeded" is displayed. Otherwise, the configuration fails.
	30	+If the configuration succeeds, the message " successfully configured CA certificate " is displayed. Otherwise it is considered configuration failure.
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	35	+= 3. Configure client certificate. =
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	38	+Use the AT command (% style="color:blue" %)**AT+CLICERT** (%%)as follows：
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	40	+The following certificates are for free input. Please enter the complete certificate when using them.
34	34
	42	+[[image:image-20240520095757-3.png]]
35	35
	44	+Display "Successfully configured client certificate." Configuration successful, otherwise configuration failed.
36	36
	46	+
	47	+
	48	+
	49	+= 4. Configure client private key. =
	50	+
	51	+
	52	+Use the AT command (% style="color:blue" %)**AT+CLIKEY**(%%), as shown below.
	53	+
	54	+The following certificates are for free input. Please enter the complete certificate when using them.
	55	+
	56	+[[image:image-20240520095936-5.png]]
	57	+
	58	+Display "Successfully configured client private key." If the configuration is successful, otherwise it is considered configuration failure.
	59	+
	60	+
	61	+= 5. burn the xx-NB-GE.bin file. =
	62	+
	63	+
	64	+After the certificate configuration is completed, burn the xx-NB-GE.bin file, which is the official product firmware.
	65	+
	66	+
	67	+
	68	+
	69	+= 6. AT+TLSMOD command =
	70	+
	71	+
	72	+To use the TLS mode certificate function, users need to configure the (% style="color:blue" %)**AT+TLSMOD**(%%) command.
	73	+
	74	+(% style="color:blue" %)**AT+TLSMOD=1,0**(%%) No authentication
	75	+
	76	+(% style="color:blue" %)**AT+TLSMOD=1,1**(%%) Perform server authentication
	77	+
	78	+(% style="color:blue" %)**AT+TLSMOD=1,2**(%%) Perform server and client authentication if requested by the remote server
	79	+
	80	+
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	86	+
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