How to remove write protect on my usb flash drive

There should be a very small slide switch along the edge of the card. Sliding this one way will lock (write protect) or unlock the card.

On USB stick, there is a "Lock/Unlock" slide bar on the opposite end of USB port. It uses the symbols of a "lock" and an "open hasp lock" to show that the device is "locked" (write-protected) or "unlocked" or not write-protected. remove the lock

Make sure the hold button isn't on. It's as simple as that.

what is the type of your mp3 player ?
it need anew firmware,

I found out that i just had to move the switch on the micro SD card from lock to unlock.

There is a software on internet, it is FREE of charge, it is called unlocker, it's a simple installation that lets you delete, rename, move any file/folder, just right-click the desired file/folder, go to"Unlocker" the image is a wand, and select the option you want.. works for me. good luck. hope this helps

how to remove write protected on my usb flash drive and i have mp3; when plugin into the usb hub it shows a problem occured during installation

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Make sure your mp3 "HOLD" option is not on!
Its really as simple as that. The hold button 'protects' the files.

how can i delete the files on my flash drive