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	3	+**Table of Contents:**
	4	+
3	3	{{toc/}}
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6		-= 1. =
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8		-= 2. =
9	9
	10	+= 1. Burn the Configure certificate =
10	10
11	11
	13	+(% style="color:blue" %)**hex firmware.**
12	12
	15	+After burning, the serial port displays as follows：
13	13
	17	+[[image:image-20240520093014-1.png]]
14	14
15	15
	20	+= 2. Configure CA certificate =
16	16
17	17
	23	+Please input the certificate in PEM format for the user. (The format of the image is entered casually, not in PEM format.)
18	18
	25	+Use the AT command (% style="color:blue" %)**AT+CACERT** (%%)as follows:
19	19
	27	+The following certificates are for free input. Please enter the complete certificate when using them.
20	20
	29	+[[image:image-20240520093355-2.png]]
21	21
	31	+If the configuration succeeds, the message **" successfully configured CA certificate "** is displayed. Otherwise it is considered configuration failure.
22	22
	33	+
	34	+= 3. Configure client certificate =
	35	+
	36	+
	37	+Use the AT command (% style="color:blue" %)**AT+CLICERT** (%%)as follows：
	38	+
	39	+The following certificates are for free input. Please enter the complete certificate when using them.
	40	+
	41	+[[image:image-20240520095757-3.png]]
	42	+
	43	+Display** "Successfully configured client certificate."** Configuration successful, otherwise configuration failed.
	44	+
	45	+
	46	+= 4. Configure client private key =
	47	+
	48	+
	49	+Use the AT command (% style="color:blue" %)**AT+CLIKEY**(%%), as shown below.
	50	+
	51	+The following certificates are for free input. Please enter the complete certificate when using them.
	52	+
	53	+[[image:image-20240520095936-5.png]]
	54	+
	55	+Display **"Successfully configured client private key."** If the configuration is successful, otherwise it is considered configuration failure.
	56	+
	57	+
	58	+= 5. burn the xx-NB-GE.bin file =
	59	+
	60	+
	61	+After the certificate configuration is completed, burn the xx-NB-GE.bin file, which is the official product firmware.
	62	+
	63	+
	64	+= 6. AT+TLSMOD command =
	65	+
	66	+
	67	+To use the TLS mode certificate function, users need to configure the (% style="color:blue" %)**AT+TLSMOD**(%%) command.
	68	+
	69	+* (% style="color:blue" %)**AT+TLSMOD=1,0**(%%)  ~/~/ No authentication
	70	+
	71	+* (% style="color:blue" %)**AT+TLSMOD=1,1**(%%)  ~/~/ Perform server authentication
	72	+
	73	+* (% style="color:blue" %)**AT+TLSMOD=1,2**(%%)  ~/~/ Perform server and client authentication if requested by the remote server
	74	+
	75	+
	76	+
	77	+
	78	+
	79	+

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