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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		-
7		-
8		-= 1. Overview =
9		-
10		-
11		-The current firmware for all BC660-GL modules is: (% style="color:blue" %)**BC660KGLAAR01A05 01.002.01.002**
12		-
13		-The latest firmware upgrade is: (% style="color:blue" %)**BC660KGLAAR01A05_01.203.01.203**
14		-
15		-You can use the (% style="color:blue" %)**AT+QGMR**(%%) command to query the firmware version.
16		-
17		-
18		-= 2. The method to upgrade the firmware of the NB module is as follows: =
19		-
20		-
21		-(% style="color:blue" %)**Step 1:**(%%) First, completely erase the program of the NBST module.
22		-
23		-
24		-(% style="color:blue" %)**Step 2:**(%%) The NB module needs to insert a SIM card and ensure network connectivity.
25		-
26		-
27		-(% style="color:blue" %)**Step 3:**(%%) Use TTL-USB serial port tool to connect TX and RX, GND of NBST,
28		-
29	29	[[image:1720682410182-594.png]]
30	30
31	31
...	...	@@ -36,12 +36,9 @@
36	36	No welding is required, just touch it with DuPont wire.
37	37
38	38
39		-(% 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.
40		-
41		-
42		-(% 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.
43		-
44		-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
45	45	The device is starting to upgrade firmware, as shown in the following figure:
46	46
47	47	[[image:1720682486714-234.png]]
...	...	@@ -53,8 +53,6 @@
53	53	The firmware upgrade was successful.
54	54
55	55
56		-You can use (% style="color:#037691" %)**AT+QGMR** (%%)to check the firmware version.
	35	+You can use **AT+QGMR** to check the firmware version.
57	57
58	58	[[image:1720682568103-178.png]]
59		-
60		-