my 16 gb san disk pan drive become write protected

:smiley: Hi, Mandeepsandhu19,

Dear member of SanDisk Community, welcome.    (1)

Friend please, you did all the tests, do not grieve more, return it, because is dead.

Mmm… Although it is possible to boot from the SanDisk pendrive, it is not a feature SanDisk supports.
These pendrives are intended only as storage devices.

Write protection errors occur when a UFD detects a potential fault within itself.
The drive will go into write-protected mode (or read only) to prevent data loss.
There is no method to fix this.

Contact SanDisk Technical Support who will replace the device, _ if it’s authentic _ and is within warranty: Link

To obtain the internal data of the UFD, you can use (portable apps, free   

Take a look at: Link

Luck.

Regards, Alfred.                

                                  (Google translated)

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