[T-Mobile Samsung Galaxy Note 8 Guides, News, & Dis] warriorvibhu:
OREO Update Success

I just did it yesterday here is what happened for me:

I downloaded and Installed Samsung drivers for Note8 from the Samsung support page, before starting any of this.

I used the following link to download the files - https://www.xda-developers.com/samsung-galaxy-s8-note8-android-oreo-february-security-patches/

i also followed the steps (My comments are blue bold and italics) from the above link which were:

First, download and put the update.zip file, linked below, onto your SD Card.

On your computer download the Odin files linked above. In the zip you will see six files. In Odin, you will see 5 categories, though you will only use 3. This is not correct I used 4 Categories [BL, AP, CP, CSC (ignore HOME_CSC)]

Put your phone into Odin mode by turning it off then holding Power + Volume Down + Bixby button. The trick i use is I restart the phone and as soon as the phone is off i keep Volume down+Bixby pressed

In Odin, put the corresponding BL, AP, CP, CSC (ignore HOME_CSC), but nothing in UMS.

Hit start.

Your phone will flash the new firmware and then reboot to the setup screen. At this setup screen i hit a snag my update went to 32% and then it showed error. I just waited to see what was going on and then the phone went into recovery mode- This is when i decided to continue and selected Apply update from SD card and flashed update.zip this is why i have no idea if my phone downgraded to BRA8, Odin on PC showed success but i didnt boot my phone normally after the odin flash i just flashed update.zip

After you do this, shut off your phone then reboot into recovery by holding Power + Volume Up + Bixby. I didnt have to do this, it happened on its own as i said in above step

Use the volume buttons and power to select “apply update from SD card.”

Use the volume buttons again to select the update.zip file and the power button to select it. The update will then start.

It can take from 2 to 10 minutes to install the update. After this just set up your phone like normal.

I have the OREO Update, nothing got erased,no factory reset and Everything is running fine. :)

Before update i was on BRA9 i dont know if i was able to downgrade to BRA8 coz of the error i mentioned above and as i applied the update.zip despite of the error after Odin flash.

EDIT: Got the confirmation that the error on blue update screen at 32% is not unique to me and if you face that please wait till your phone goes to Recovery on its own and then flash update.zip- Here is another post for the same error - https://xdaforums.com/showpost.php?p=75469168&postcount=130

EDIT 2: I did the same process again but used the update.zip package from here : https://samsung.firmware.science/download?url=48993/1488/SS-N950USQS3BRA8-to-U3CRB3-UP

This is the latest release client CRB3 unlike the one in instructions above which is CRB1.

People updating to Oreo for the first time should use update.zip from here https://samsung.firmware.science/download?url=48993/1488/SS-N950USQS3BRA8-to-U3CRB3-UP to get the latest version.

EDiT 3: CRB5 is out here https://androidfilehost.com/?fid=746010030569952777

EDIT 4: As of on 30th May 2018 CRE1 is offiicial from T-Mobile.

Warning: This breaks Android Pay, mostly due to certificate missing. This is no longer the case if you have CRC2 and other certified versions installed