Ufix-II (USB Flash Driver Format Tool). USB Flash Drive v210w 16 GB Write Protected AGAIN. USB Disk Storage Format Tool is the free USB flash drive tool that brings enhanced power. USB Disk Storage Format Tool 5.0. Restart your computer, and re-plug the SanDisk USB flash drive or other storage devices into your computer, check whether the issue is solved or not. Way 2: SanDisk Write Protected Removal tool. The best way to remove write protection from SanDisk is to format it with write protection removal tool.
From Authorsoft: USB flash drives hold everything from personal and medical information to music and pictures and even secure data, with the added advantage of being small and rugged enough for keychain duty.
USB Disk Storage Format Tool utility allows you to quickly and thoroughly format virtually any USB flash drive with your choice of FAT, FAT32, exFAT, or NTFS partition types. 
Features: Quick format and safe format. Erase all data and delete space on flash drives that cannot be removed in the traditional way. Remove any tracks of malicious software that may have infected it. Correct partition errors if any. Create volume label for USB disk drives. Scan drive for errors before formatting. Create a FAT32 volume larger than 32 GB.
The software has been tested with thousands of flash drives (Compact Flash, CF Card II, Memory Stick Duo Pro, SDHC, SDXC, Thumb Drive, Pen Drive) of the following brands, SanDisk, Kingston, Transcend, Corsair, HP, Sony, Lexar, Imation, Toshiba, PNY, ADATA, Verbatim, LaCie, Panda, Seatech, SDKSK9, Silicon Power, IronKey, and HDE. USB Disk Storage Format Tool is the free USB flash drive tool that brings enhanced power and capability to your Windows system at no cost. We recommend the freeware to anyone who uses flash drives.