| Problem | Likely Cause | Solution | |---------|--------------|----------| | “Failed to download model” | MakerWorld server timeout | Retry after 30 seconds. Use browser download instead of direct open. | | Downloaded .3mf has wrong filament color | Author saved their filament profile | In Bambu Studio → Objects → Select model → Edit filament override. | | Slicer settings greyed out after download | Model file has locked settings | Click the lock icon next to the setting to unlock (advanced mode required). | | Bambu Studio won’t open downloaded file | Corrupted download or wrong file type | Re-download as .3mf from MakerWorld (use manual download option). | | Firmware download stuck at 0% | Network issue or SD card full | Restart printer and router. Free up SD card space (min 500MB free). |