First, twrp's site has the newest twrp for the tf300t at 126.96.36.199. However, the ROM's page says to flash the 188.8.131.52 TWRP which doesn't exist on TWRP's site. Why does it not exist?
Second, I downloaded the linked TWRP file from the ROM's page, but it's a zip. When I try to flash it using fastboot and bootloader, fastboot acts like everything succeeded is fine but the tablet never installs anything. Fastboot reboot does nothing. However, if I try to flash a .blob, it works and the tablet gets the progress bar and it flashes. What should I do to get TWRP updated so I can flash a new ROM?