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62	62	= 4. How to solve =
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64	64
65		-Users can manually query the password via STM32CubeProgrammer.
	65	+== 4.1 Method 1: Erase the chip before upgrading the firmware ==
66	66
67	67
68		-== 4.1 UART connection and firmware update methods ==
	68	+The user can choose to erase all contents before upgrading the firmware and then burn the new version of the firmware. The user can still use the original password, but this method will restore all configurations to the default firmware Settings.
69	69
	70	+The chip can only be erased by updating the firmware through the UART TTL interface. See [[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
70	70
71		-Users can query passwords only using the UART interface via the STM32CubeProgrammer.
	72	+Method of erasing full chip flash memory
72	72
73		-See **[[UART Connection>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]]**.
	74	+* Connect to the STM32CubeProgrammer
74	74
75		-update firmware through UART TTL interface :** [[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
	76	+[[image:image-20240827164813-1.png||height="457" width="791"]]
76	76
	78	+* Select Erase full chip flash memory
77	77
78		-== 4.2 query the password via STM32CubeProgrammer ==
	80	+[[image:image-20240827165549-2.png||height="462" width="800"]]
79	79
80	80
81		-Users can use the password address to query the password through STM32CubeProgrammer.
	83	+After the erase is complete, download the new firmware directly.
82	82
	85	+* update firmware through UART TTL interface : **[[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]]**.
	86	+
	87	+== 4.2 Method 2: Update the firmware directly and query the password via STM32CubeProgrammer ==
	88	+
	89	+
	90	+If you do not want to erase the chip flash memory, you can also use the password address to query the password through STM32CubeProgrammer.
	91	+
83	83	* The password address for old firmware(without FDR1 function) : **0x08019000**
84	84	* The password address for new firmware(with FDR1 function) : **0x08025D00**
85	85
...	...	@@ -93,19 +93,14 @@
93	93	* Click "Device memory", enter **0x08019000** in "Address", and click "Read"
94	94	* Find the 0x08019000 address field and then read the current password as shown in the screenshot below.
95	95
96		-[[image:image-20240827171901-3.png||height="528" width="912"]]
	105	+[[image:image-20240827171901-3.png||height="562" width="973"]]
97	97
98	98
99	99	**Procedure for querying the password(new firmware):**
100	100
101		-Refer to [[the old and new firmware division>>http://wiki.dragino.com/xwiki/bin/view/Why%20can%27t%20the%20password%20access%20AT%20command%20after%20upgrade%28-NB%29%3F/#H3.A0VersionConfirmation]] above, and run the firmware first after updating the firmware.
	110	+Refer to the old and new firmware division above, and run the firmware first after updating the firmware.
102	102
103		-* After the firmware upgrade is complete, switch back to the FLASH and reset the node to run the new firmware once.
104		-* Then place the switch at the ISP and connect to the STM32CubeProgrammer (same as when burning the firmware).
105		-* Click "Device memory", enter **0x08019000** in "Address", and click "Read"
106		-* Find the 0x08019000 address field and then read the current password as shown in the screenshot below.
107	107
108		-[[image:image-20240827180414-1.png||height="527" width="910"]]
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110	110
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