The NSDN-W59 generally requires a specific file structure to recognize the card as a "boot" device. Bootable SD-card For TOYOTA NSDN-W59 | Podcast on SoundOn
This is why a works: You are hijacking step #2. --BETTER-- Bootable SD-card For TOYOTA NSDN-W59 318
Using balenaEtcher or Win32DiskImager , write the downloaded .img file directly to the SD card. This writes the exact partition table, boot sector, and hidden sectors. A standard copy-paste cannot do this. The NSDN-W59 generally requires a specific file structure
Toyota NSDN units lock to an SD card's (Card Identification Number). Your new card has a different CID. However, the NSDN-W59 318 is usually not CID-locked (unlike newer Toyota models). But if it asks for a password or says "Navigation cannot be activated": This writes the exact partition table, boot sector,
The NSDN-W59 318 uses Toyota's "SD Map" system. You cannot copy newer map files from a different region—the cryptographic signature will fail. However, you can:
Do not use Windows "Disk Management" to create partitions manually. The Toyota NSDN unit expects a specific starting sector offset (often sector 2048, not 8192). Rufus/Etcher preserve this exactly.