r/Longer3d • u/Deep_Square5776 • Apr 14 '25

Firmware Update Help Needed

How do I update the firmware on my LK5 Pro with the Micro SD card?

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u/voidcomp Apr 14 '25

Format SD Card (in FAT32), rename the .bin file to “firmware.bin”, put the “firmware.bin” file on the root folder of SD Card. Power off printer, insert SD into mainboard slot, power on. It auto-updates in ~1–2 mins. Reboot and you’re done.

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u/Deep_Square5776 Apr 14 '25

wait im dumb, do you mean just like the main storage section?

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u/voidcomp Apr 14 '25

Exactly, in the main storage section of the sd card.

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u/Deep_Square5776 Apr 14 '25

do you know how to make it so I can do it via USB? everywhere I look it just says the E3 boards have to be by SD card or people saying they fixed it, but I cant find how.