GitHub - liveboxandy/STM32-Firmware-Dumping: How to dump firmware from a Creality Ender 3 S1 plus

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How to dump firmware from a Creality Ender 3 S1 plus

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Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
Creality PCB CPU Reset.jpg		Creality PCB CPU Reset.jpg
Creality PCB J201 Zoom.jpg		Creality PCB J201 Zoom.jpg
F401RET 008000000 To 0X0807FFFF.bin		F401RET 008000000 To 0X0807FFFF.bin
F401RET 0X1FFF0000 To 0X1FFF77FF.bin		F401RET 0X1FFF0000 To 0X1FFF77FF.bin
F401RET 0X1FFF7800 To 0X1FFF7A0F.bin		F401RET 0X1FFF7800 To 0X1FFF7A0F.bin
F401RET 0X1FFFC000 To 0X1FFFC00F.bin		F401RET 0X1FFFC000 To 0X1FFFC00F.bin
README.1ST		README.1ST
ST-Link Settings.PNG		ST-Link Settings.PNG
ST-Link Wires1.jpg		ST-Link Wires1.jpg
ST-Link Wires2.jpg		ST-Link Wires2.jpg
STM32F401xE Flash Layout.PNG		STM32F401xE Flash Layout.PNG

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Install ST-Link Drivers
Install ST-Link Utility
Connect ST-Link to Creality Board J201 as per pictures. 
(Creality PCB J201 Zoom.jpg, ST-Link Wires 1.jpg and ST-Link Wires2.jpg)
Short the connections to J202 (Orange/Yellow wires)
(Creality PCB CPU Reset.jpg)
Start ST-Link software
Adjust Target -> Settings to Mode 'Connect Under Reset'
(ST-Link Settings.jpg)
Power On PCB
ST-Link SW Target -> Connect
While LED on ST-Link is blinking remove short on J202
ST-Link SW should now connect.
You should now be able to dump/flash firmware
See STM32F401xE Flash Layout.jpg for details.