[Samsung Gear S3] Latrell567:
Yo, what's up guys. It's Latrell.

THE STORY

So both yesterday and today I took a risk. Yesterday I tried downgrading back to Tizen 2, because in my opinion... I don't know if it's just me... but it's smoother on Tizen 2. So I did that, just to find out when it finished flashing that it was too old and it wouldn't work because of rollback prevention. So basically it was bricked. So I've been unable to use this watch for probably a full 24+ hours. Today's risk I took was buying the firmware from a shady looking website that wouldn't even download the files on my computer because it said it didn't recognize it, when it's running Windows 10 using Chrome, and would only work with my phone... What it told me was I had to pay because it was a "premium" file, but I wasn't disappointed. It gave me the right file! Not the downgrade I wanted, but what I needed to actually use my watch again. The latest Tizen 3.0.0.1. So I'm happy to say I was able to unbrick my Gear S3 without having to send it to Samsung or bring it to a Samsung Experience Shop.

So what I did was I uploaded it to my Google Drive with NetOdin in a ZIP file so you guys don't have to pay for anything, and I'll be sure to keep up with this to make sure there's no dead links. Because I know that's a pretty bad problem here on XDA. So this is how to unbrick/update/whatever you're using this firmware for... this is how to flash it onto your Gear S3. This may apply to both the classic and frontier, I'm just not sure.

THINGS YOU NEED TO KNOW

- It's probably a good idea if you charge your watch up all the way to save trouble. This will drain probably around 15% of your battery depending on how fast your Wi-Fi card is, so be sure to get at least 30% on your watch before you do this. If you can't, just keep your charger next to your computer and keep the watch on it, charging, from the outlet.

- You might want to turn off reactivation lock to save trouble too. It's not required as I didn't think anything of it and didn't have problems, but better safe than sorry. So to do it on Android, go to Samsung Gear > Settings > Find My Gear > and turn off reactivation lock

And on iOS, go to Gear S > Settings > Find My Gear > and, again, turn off reactivation lock.

- NetOdin requires Wi-Fi since you can only do this process via Wi-Fi. You can do it via cable somehow, but me, and basically everybody else doesn't know how to. So get a Windows computer with Wi-Fi.

- You will need Windows for this. There may be unofficial ways to get Odin on Mac, or even Linux (but get real, who uses that), but it's better if you just install Windows on it. Windows is installable on a Mac.

- This will take a while, for probably both downloading the ZIP, but especially flashing the file. I have a really, really old Wi-Fi card with the world's shortest connection distance, so it took around 30 minutes for me. Patience is key.

- As per usual with these posts, know that I am NOT responsible for anything that goes wrong. I took a risk, and so are you. This isn't exactly the most reliable way of flashing a firmware, but it's the only way. It would be better and a lot quicker if you could plug this thing in via USB.

- Somebody let me know since I don't have a Gear S3 classic, but it may or may not work with both the Gear S3 classic and frontier. I don't know if they use the same firmware.

Ok. Let's do it.

HOW TO FLASH IT

Step 1: Download the ZIP file, and extract the files wherever it's most convenient for you.

Step 2: In that folder you extracted (should be called "Gear S3 frontier (SM-R765T) firmware flash"), open the "WiFi_Net_Odin" folder, and open the "NetOdin3" exe file.

Step 3: Click BL, and scroll to wherever you extracted that ZIP folder. Go to the Firmware flash folder, and click the file that starts with BL_. Same for clicking the other buttons. For AP, you would click the file that starts with AP_, and etc. Once you're done with that, head over to the Pit tab on the left. Press the PIT button, and in that same folder, there should only be 1 file. "partition.pit". Click that.

Note: The app might freeze when you load the AP file in the app. Don't worry about that, it's supposed to do that. Just let it freeze, and it'll eventually fix itself. And once you're done, it should look something like the screenshot I attached. When everything looks good, move on to step 4.

Step 4: Getting your watch ready. Start off by pressing and holding onto the power button, whether it's on or off, until it says restarting under the logo. When you see that, immediately keep pressing the power button. Press it 3 times until you get into a new menu.

Step 5: When it shows up, you gotta react within 5 seconds, or it's going to restart. Scroll to "Download (Wireless)" until it's highlighed by pressing the power button. You should have to only press the power button once to get to it. Once it's highlighted, press and hold onto it, and it should boot into a screen with the flower looking thing that's the Tizen logo with a screen that says Wireless-download.

---Notice: If you're watch is bricked to the point to where it shows the flower, then turns off and won't let you flash it, refer to my post on how to get into this mode.---

Step 6: Double press the power button, and it should show "Wait for AP connection." If you followed the post I linked in the notice, skip this step.

Step 7: Go on your computer's Wi-Fi settings, and look for SM-R765T in the list of connections. Connect to it even though it obviously has no connection, and it should show your IP address in Odin in a blue box. It should also say it's connected on your watch.

Step 8: Head to the options tab and make sure that Auto Reboot and F. Reset Time are the only options checked. When everything looks good, click log again and hit start, and let it do it's thing... If it fails somehow, just go from step 4 again, and get back into Wireless-download mode. You might have to disconnect and reconnect to the watch's Wi-Fi on your computer to get it to show up in Odin.

Step 9: When it finishes, press and hold onto the power button until it says restarting again, then press the power button 3 times again, and press the power button until it's highlighted on Recovery. Then press and hold until it restarts. It'll go blank for a little bit a few times, but it should be working. If it's blank for longer than a minute or two, then you might have to consider flashing again.

At this point you should be done.

I hope I was able to help you. Usually I'd do a YouTube tutorial on this (the orange hyperlink is to my YouTube channel) but I decided to do this instead. I might do a video anyways to make sure everything's clear on what to do. If I do, I'll leave a link. But after dealing with the trouble and thinking I wouldn't be able to get this fixed, I thought I'd make everyone else's process a little more convenient.

UPDATE: The video's live if you're more of a video type of person: https://youtu.be/RQUrL2lhcS4

I know this helps your profile, so if you could be so kind and hit that thanks button, I'd greatly appreciate it. It was pretty time consuming to make this, but it was worth it to know I'll be able to help out a lot of people. Especially since the latest firmware at the time of making this post isn't available for free.

Have a good day with your working Gear S3 again!