When using Navigation Updater, the “Portable Device Formatting Unsuccessful” error may be caused by a portable device, SD card, USB or SD card reader. Please refer to the following steps to resolve the issue.


1. Check the SD card lock settings 

    - If the switch on the left of the SD card is lowered, it is locked. If it is raised, it is unlocked. 

    - Slide the switch up and down multiple times before leaving the button raised (unlocked).


2. Disconnect SD card from PC, restart your PC, then try updating again

    - Note: Safely remove your SD card from your PC to maximize your SD card lifespan.

Note: If the error still occurs, try using a different PC or SD card reader. If this problem persists, Please contact us via Chat portal or email