Does not read the SD card or USB drive
4 usi3d guides for “Does not read the SD card or USB drive”, each with the likely causes, how to check which one is yours and the step-by-step fix, with each manufacturer's official sources.
3 apply to any FDM printer and one is for a Bambu Lab printer.
Each guide summarises the official documentation and says whether usi3d has already verified it on a machine.
Any FDM printer (3 guides)
- The file does not show up on the printer or is not recognised: format, folder and card
The microSD card or USB drive is read, but the file you copied does not appear in the list on the screen, or it appears and the printer warns that it is not compatible…
- The printer cannot find the firmware update on the card or USB drive
You have copied the new firmware to the microSD card or USB drive, but the printer does not offer to update, cannot find it, or the update stops halfway.
- The printer won't read the SD card or USB drive
The printer doesn't detect the card or USB drive, doesn't show the files, or warns that the file is incomplete or corrupted.
Bambu Lab (1 guide)
- My Bambu printer won't read the microSD card or shows card errors
The printer asks for a microSD card (0500-400C) or reports that the card is write-protected (0500-4016), has damaged sectors (0500-402F), has a read/write error…
Products that may help
Products from the usi3d shop that fit these guides, chosen for the fit and not for the commission. Check that they work with your printer before buying.
More “Connectivity and firmware” problems
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