Default [Q] TF101 unbricked problem

Hi, brk
I'm Taiwaness. I describe my problem with poor English.
Last day my TF101 loop on opening, I used EasyFlasher to recover to official ROM.
I downloaded usbdriver for apx mode, it works.
And downloaded Asus ROM(TW 9.2.1.27),put in EasyFlasher update forder.
Then I click the flash asus stock rom button, everythings is OK.
But stop at this point

formatting partition 15 uda please wait...done

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It can't start to formatting partition 16 gpt
How can I fix it?