I have a Galaxy S9 that was originally on Verizon but since it's unlocked I use it on T-Mobile. I'm stuck on Oreo and unable to update. I have tried everything the Samsung chat reps have suggested. I tried using Samsung Switch, I tried reinstalling the drivers there. Didn't work. I tried clear cache etc. Didn't work. How can I get this device updated without sending it off to Samsung (which they suggested and I find that ridiculous)
I refuse to use Odin. I tried that years ago and I ended up bricking the phone. Yes, my fault I know and accept but I don't want to take the risk this time around.
*I want to edit and say Samsung told me to go to Best Buy to have them update it. Called Best Buy and they no longer provide this updating software service*
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United States phones SHOULD not be using Odin if you have the Snapdragon processors. Instead use stock recovery mode from an SD card. It's the best way. Just make sure you double check the firmware version you download.
I managed to use Odin and flash the Tmobile software on my S9 with no issues. After swearing I wouldn't use Odin I finally did research and found it to be a very easy process. After all that it was no big deal. I'm now on the latest Tmobile software for Pie.