MK4S Firmware Flash button not working - Hardware, firmware and software help https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/ Prusa3D Forum Discussion Board en-US Wed, 15 Apr 2026 15:34:52 +0000 wpForo 60 RE: MK4S Firmware Flash button not working https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741447 Fri, 21 Mar 2025 04:53:57 +0000 Hadn't tried the Control Switch and it did the job... many thanks :)

 

]]> Hardware, firmware and software help rebelgnome https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741447 https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741445 Fri, 21 Mar 2025 04:38:57 +0000 Have you tried clicking the control switch?

Cheerio,

]]> Hardware, firmware and software help Diem https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741445 MK4S Firmware Flash button not working https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741409 Thu, 20 Mar 2025 22:42:18 +0000 I'm trying to update the firmware on my MK4S but the "Flash" button isn't working (see vid)... any ideas?

https://thestagingsite.com/prusa/Vid-MK4S-NotFlashing.mp4

]]> Hardware, firmware and software help rebelgnome https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/mk4s-firmware-flash-button-not-working/#post-741409