Question: asus tf101 how to flash?
Answer: Download the latest ASUS WORLDWIDE Firmware [yarr.fjolstad.no - direct https] ... 
Put the .zip inside the "asusupdate" folder (inside EasyFlasher folder)
Do _NOT_ UNZIP it. ... 
Click the "Flash Asus stock zip" button in EasyFlasher and it'll do the rest of the job.