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1		-**Table of Contents: **
	1	+
2	2
3		-{{toc/}}
	3	+The current firmware for all BC660-GL modules is: BC660KGLAAR01A05 01.002.01.002
	4	+The latest firmware upgrade is: BC660KGLAAR01A05_01.203.01.203
	5	+You can use the AT+QGMR command to query the firmware version
	6	+The method to upgrade the firmware of the NB module is as follows:
	7	+Step 1: First, completely erase the program of the NBST module.
	8	+Step 2: The NB module needs to insert a SIM card and ensure network connectivity.
	9	+Step 3: Use TTL-USB serial port tool to connect TX and RX, GND of NBST,
4	4
5		-
6		-= 1. Overview =
7		-
8		-
9		-The current firmware for all BC660-GL modules is: (% style="color:blue" %)**BC660KGLAAR01A05 01.002.01.002**
10		-
11		-The latest firmware upgrade is: (% style="color:blue" %)**BC660KGLAAR01A05_01.203.01.203**
12		-
13		-You can use the (% style="color:blue" %)**AT+QGMR**(%%) command to query the firmware version.
14		-
15		-
16		-= 2. The method to upgrade the firmware of the NB module is as follows: =
17		-
18		-
19		-(% style="color:blue" %)**Step 1:**(%%) First, completely erase the program of the NBST module.
20		-
21		-
22		-(% style="color:blue" %)**Step 2:**(%%) The NB module needs to insert a SIM card and ensure network connectivity.
23		-
24		-
25		-(% style="color:blue" %)**Step 3:**(%%) Use TTL-USB serial port tool to connect TX and RX, GND of NBST,
26		-
27	27	[[image:1720682410182-594.png]]
28	28
29	29
...	...	@@ -34,12 +34,9 @@
34	34	No welding is required, just touch it with DuPont wire.
35	35
36	36
37		-(% style="color:blue" %)**Step 4:**(%%) The device needs to be powered on, open the serial port debugging tool, connect the COM of the USB serial port with a baud rate of 115200, and then perform FOTA firmware upgrade.
38		-
39		-
40		-(% style="color:blue" %)**Step 5:**(%%) After opening the serial port, send the (% style="color:#037691" %)**AT+QIDNSCFG=0, "223.5.5.5", "8.8.8.8"**(%%) commands,  return OK.
41		-
42		-Send (% style="color:#037691" %)**AT+QFOTADL again= http:~/~/repo.dragino.com/release/NB/Update_BC660KGLAAR01A05_01.002.01.002-R01A05_01.203.01.203.zip**(%%) command,
	21	+Step 4: The device needs to be powered on, open the serial port debugging tool, connect the COM of the USB serial port with a baud rate of 115200, and then perform FOTA firmware upgrade.
	22	+Step 5: After opening the serial port, send the AT+QIDNSCFG=0, "223.5.5.5", "8.8.8.8" commands and return OK
	23	+Send AT+QFOTADL again= http:~/~/repo.dragino.com/release/NB/Update_BC660KGLAAR01A05_01.002.01.002-R01A05_01.203.01.203.zip command
43	43	The device is starting to upgrade firmware, as shown in the following figure:
44	44
45	45	[[image:1720682486714-234.png]]
...	...	@@ -51,8 +51,6 @@
51	51	The firmware upgrade was successful.
52	52
53	53
54		-You can use (% style="color:#037691" %)**AT+QGMR** (%%)to check the firmware version.
	35	+You can use **AT+QGMR** to check the firmware version.
55	55
56	56	[[image:1720682568103-178.png]]
57		-
58		-