[RECOVERY][TF300T] TWRP 3.1.1-0 touch recovery [2017-05-19]

Hey guys, first off thanks in advance for whatever help you can give me on this odd issue.

I ordered a TF300T refurbished from newegg because of the sweet price and knowing that it was good hardware. I have owned a few android phones/tablets and have always gotten them rooted, custom rom loaded, no issues, that is until now.

Here is what I did since I got it. I updated it to the latest firmware, unlocked using the Asus tool, and flashed a custom recovery CWM and installed the latest cyanogenmod nighly.

Next thing I did is what messed me up bigtime. I read on the forums that TWRP recovery was better because it could handle external sd better or something, so I went to flash the latest TWRP recovery using Goomanager. I prefer TWRP anyway so I figured it would be a good idea. I then wanted to test and make sure recovery was flashed ok before I start messing with cyanogenmod just in case I broke something. So what I did was I held down the power button til the "Reboot to recovery" popped up and I selected that. I rebooted and now I am stuck at the Asus bootloader screen and all it has is "ASUS" and "Device Unlocked" in the upper left. I think that when I flashed the recovery the second time, it didn't go right..

I have read around on XDA and other forums about this and I have tried to reboot back into the ROM so I can reflash the recovery, but the "boot to recovery flag is till on, so I keep getting to that bootloader screen.

Also I read that this can be remedied by using Fastboot to reboot to the rom or reflash my recovery but I tried that and that doesn't work either.... Windows will see it as fastboot when I hit the reset hole button while holding the vol up button so I know I can get to fastboot...

Whenever I go to use a fastboot command it says "Waiting for device"

I have tried Asus's drivers and the "Naked adb/fastboot ones" on Windows 8 64, Windows 7 64, Windows XP, and now Ubuntu 32bit and they all show up with "Waiting for device" I also tried forcing the vendor id and that did the same thing.

Am I f***ed?

If it's just a problem with your fastboot, use this guide : [GUIDE] Help for flash more faster when you use Fastboot Line Command
It's really simple

i try everything and no luck. i did the android terminal with su it say not found. im going crazy here. help!!!!

I wish it was noobishness that was the issue lol Thanks guys. Also I apologize for posting this in a few threads, so if you run into this post again don't worry about it. Someone pointed out my mistake and I guess I missed the part where TWRP says not to use GooManager because of an ICS/JB version mismatch.
Also, I forgot to mention that I can't get to fastboot the conventional way via the power and volume keys, because it wants to boot immediately from the recovery (that I flashed wrong) so it never gives me the icons to choose. The only way I can get to fastboot is with the reset button hole and volume up at the same time. I am thinking this is why fastboot wont work correctly is that it is not selcted from that menu, but I can't get to the menu because of the boot to recovery flag. I am going to call Asus and see what they can tell me to do, or maybe have it sent in. I have unlocked it so I will ask if I can just pay to send it in a reset it or what.
Thanks guys but I think I messed myself up pretty good on this one.

i try everything and no luck. i did the android terminal with su it say not found. im going crazy here. help!!!!
----------------------------------------------------added -------------------------------------------
i have no internet on my tablet at the time. i try fastboot no luck
i try
su

then type
dd if=/sdcard/twrp.blob of=/dev/block/mmcblk0p4

no luck it say (system/bin/sh: su: not found)