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This is what I have and it is working with no problem with bridge mode.

Hi @Stardude900,

You were using "atnf openwrt-initramfs.bin, " a wrong command and firmware file. Please download the correct firmware file via this link. And use the command "atnz 629ABYW4C0.bin" to upload the firmware file. The only different place for NWA50AX is the file name in step 3. The commands are the same.

Alright so I wanted to document this here in case anyone else runs into this issue like me.

I flashed OpenWRT onto this access point because the stock GUI was not intuitive and the instructions were written rather poorly. After flashing OpenWRT (btw this took forever), I noticed wifi speeds were reduced by about 50% so I said "welp. Let me flash the OS stock back onto it and just figure their manual out". I started to flash stock OS, had a blip, and that's where my problems started. It would go into a boot loop (not able to load any firmware) and the ethernet port would only be active for 5 seconds. I had no way of loading new software onto it, but could at least interrupt the boot process and send a few commands. I also was somehow setting up a tfptd server on some virtual ethernet thing (really not sure how that happened). It must be on your ethernet adapter that you will plug into.

So I want to walk through what to do and save you all the headache I was getting. I'm going to write this with some assumptions that you have a basic understanding of setting up putty, assigning an IP address,

1. You are going to need a usb to serial adapter in order to hookup to the console port of the AP. You need something like this. When looking at the ports of the AP with the QR code facing up, it goes Ground - Receive - Transmit - V (from left to right).
   1. Hook up Ground to Ground, Transmit of the USB adapter to Receive of the AP, Receive of USB to the Transmit of Console. DO NOT DO ANYTHING WITH THE V PIN. The USB Device needs to be set to 3.3v (this is usually done with a jumper.
2. Plug the USB into your laptop. Open up a putty serial session in order to see information coming from the router. This will allow you to break the boot sequence and send commands.
   1. Needs to be 115200 baud rate, other settings I didn't change.
   2. Boot up the router. You should now see information flying through the terminal on it trying to boot. Hit the spacebar until it stops the boot process.
3. Set the IP of your ethernet port on your laptop to something like 192.168.1.10 It just can't be 192.168.1.2 (this is the IP address of the AP)
4. Setup a tftpd server using tftpd64. I'd recommend watching this video (it's two minutes, just set it up how he does and make sure you select the 192.168.1.10 address for the server to be on).
   1. Download the .bin file that zixel_melen posted above (I think you can use any firmware version of the AP, but this should work). Put it in the working directory that you setup with the tfptd server.
5. Connect an ethernet cable from your laptop to your AP directly (does not need to be a crossover cable).
6. On the putty session enter the following commands.
   1. atna 192.168.1.2
      1. This is telling the AP that it's IP address is 192.168.1.2 (which it should be)
   2. atns 192.168.1.10
      1. This is telling the AP that the IP of the tfptd server is 192.168.1.10 (or whatever number you set above)
   3. atnz 629ABYW4C0.bin
      1. This tells the AP to go fetch this file name and start loading the .bin file.
7. As long as you've done everything correctly, you should start seeing it loading the file over and flashing the .bin file
   1. This took about 3 minutes to complete. The LED on top of the AP will start to blink it's LED patterns while it is booting up. Eventually it will take you to a login dialogue in the terminal.
8. Congrats, you're now back on stock firmware. I'd recommend pressing the "reset" button on the AP to get it to go back to factory defaults and you can login with admin 1234.

I hope this helps people and is written in a way that most people can understand. The wording on the Openwrt is incorrect on what steps to do, so I'll try to make an account and update it there.

Thanks again everyone