How Do I Turn Off Write Protection on a MicroSD Card?
To turn off write protection on a microSD card, format the disk to remove corrupted data. To use with an SD card adapter, slide the side lock to the unlock position.
Connect the microSD card to a computer
Use a memory card reader to connect the microSD card to a computer for formatting. In case you’re using an SD card adapter, ensure that the write protection key is in the unlock position.
Locate the card
Right-click My Computer, and click Manage. Go to the Disk Management tab on the left pane, and locate your microSD card from the list of available disks.
Format the microSD card
Right-click on the microSD card’s drive, and click Format. This eliminates all data, including corrupted files that cause write protection in storage devices.