FORMAT 64GB MICRO SDXC PROBLEM

:smiley:   Hi CharlesLeung888,

Dear member of SanDisk Community, welcome.

Please friend, do not grieve more, return it, is defective.

See link, and you might have a pleasant surprise: http://www.sandisk.com/about-sandisk/contact-us/

To obtain, the internal data card, you can use the utility (free): USB Flash ChipGenius 4.00, http://filecloud.io/rqa7etmv

To find out more on this, see here:

http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/HELP-how-do-i-reomove-write-protected-message-from-my-16gb-flash/m-p/323924#M8925

Luck.

Regards, Alfred.                                                                                (Google translated)