Will this work with H/W VER CR-FDM-v2.5. S1_1 ?

[crealityofficial]

Will this work with H/W VER CR-FDM-v2.5. S1_1 ?

[kamoteshake]

The one that you linked is just for the about page in the screen. for the board compatibility, you have to look at

Ender-3S1/Marlin/Configuration.h

Lines 78 to 79 in 7fffa92

	#define USER_STM32F103 1
	// #define USER_STM32F401 1

you might have to change these in the platformio.ini if you change the lines above to compile the firmware.

Ender-3S1/platformio.ini

Lines 18 to 22 in 7fffa92

	; default_envs = HAL_STM32F103RET6_creality
	; default_envs = STM32F401RC_creality
	default_envs = STM32F103RET6_creality

[trapper-]

Yeah ok I see that string is for display.

Just seems odd to me if it ends up displaying a hardware version which doesn't match my actual hardware. Wonder what is the point of displaying it in the first place if it's not going to be accurate.

[kamoteshake]

you have to understand that this firmware is being used by multiple machines. I have a feeling that Creality just selected a version for the S1 Pro and pushed it here. Just FYI, I was able to fork this firmware and use it on my S1 Plus. Sure I don't get the latest version of the S1 Plus firmware (since this is based one 2.0.8.24 and the latest for S1 Plus is 2.0.8.26) but I was able to configure it to be used on my S1 Plus.