yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S6] Schwagz:
Okay to be fair, I have also been waiting since January which is when I first got the phone (This was due to AT&T switching to Verizons idea of upgrading phones, so I was screwed out of an S7 because it was a month too late). I thought that maybe Marshmallow was already out for the S6, and now after about five months, its finally happening.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
You know what... I think this goes back to what that Samsung lady told me some days ago. Samsung could have just released this firmware that meets AT&T's standards (or lack thereof). It could still be until mid-May or later before we see anything. Hopefully I'm dead wrong though.
[AT&T Samsung Galaxy S6] Schwagz:
It seems like it would be wrong, as AT&T and Verizon have similar standards when it comes to phone quality, and yet Verizon has had Marshmallow for nearly a month! Also the Galaxy S6 pages updated on Samsungs website the around the time that the update came to that carrier.

I'd suggest checking Sammobile the next few days, we dont know if this is coming in waves or at once.
[AT&T Samsung Galaxy S6] sugardaddy1979:
Maybe....

http://www.droid-life.com/2016/04/29/att-galaxy-s6-next-line-marshmallow-update/
[AT&T Samsung Galaxy S6] OddlyBorderline:
Whomever gets the update, please capture and post it. For God's Thor hammer of electric sake pleazzzzze.
[AT&T Samsung Galaxy S6] sugardaddy1979:
Found this too.... Apparently it was released 4/28/2016.

http://www.samsung.com/us/support/answer/ANS00038783/997495268/?CID=AFL-hq-mul-0813-11000170
[AT&T Samsung Galaxy S6] s629c:
Someone try a different bestbuy
[AT&T Samsung Galaxy S6] sugardaddy1979:
On my way now
[AT&T Samsung Galaxy S6] mnp261194:
How do you save the update??? Also i have encryption enabled on my phone will that affect anything??
[AT&T Samsung Galaxy S6] OddlyBorderline:
you couldn't be faster i'll be waiting for your reply oh great one
[AT&T Samsung Galaxy S6] cesarsuarez:
It was time! Now do not forget to put screenshots and download the firware
[AT&T Samsung Galaxy S6] kapooo3:
is it out?
[AT&T Samsung Galaxy S6] mnp261194:
No didn't get an OTA yet when i checked for new software
[AT&T Samsung Galaxy S6] OddlyBorderline:
I have a att gs6. But on cricket so I'll have to hope someone captures the ota update. But I'm so damn eager lol.
[AT&T Samsung Galaxy S6] kapooo3:
hopefully we get it ASAP i can't wait no more
[AT&T Samsung Galaxy S6] h3lluvaninjuhneer:
You need to disable encryption before updating to Marshmallow or else you will never be able to decrypt the phone again.

http://wccftech.com/download-galaxy-s6-and-s6-edge-marshmallow-consumer-guide/
[AT&T Samsung Galaxy S6] mnp261194:
Thanks, i will do that but i don't really feel the need to decrypt again anyway afterwards but i will decrypt right now then encrypt again later on..maybe
[AT&T Samsung Galaxy S6] s629c:
Decryption is fairly quick so shouldn't be too much a hassle
[AT&T Samsung Galaxy S6] KoubaK:
http://www.samsung.com/us/support/answer/ANS00038783/997495268/
[AT&T Samsung Galaxy S6] s629c:
Someone already posted that
[AT&T Samsung Galaxy S6] archie87:
Oops nevermind.
[AT&T Samsung Galaxy S6] dpw2atox:
I just checked, nothing still
[AT&T Samsung Galaxy S6] CameronQuinn:
Same
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Told yall it'll probably be another month at least. Samsung's just announcing the final version. AT&T probably needs to do its final testing.
[AT&T Samsung Galaxy S6] OddlyBorderline:
Faith, trust and pixie dust my boy.
[AT&T Samsung Galaxy S6] troyboytn:
If anything, Samsungs intention in posting the update details was to light a fire under AT&Ts ass and wipe its hands of it placing all responsibility squarely away from Samsung and directly on AT&T
[AT&T Samsung Galaxy S6] Schwagz:
I know its most likely not out yet at the store kiosks, but I know the reps at a local Best Buy really well, infact we're basically friends. I'll keep ya'll posted, though it most likely wont be there.

UPDATE: Nope, said its all on AT&T's hands
[AT&T Samsung Galaxy S6] dpw2atox:
Out of curiosity I looked up the release dates for updates on att's support page and compared them to the ones listed by Samsung and they were all fairly close, with the same dates or a max 3 day variance. I guess we can assume at this point the update is done and att just needs to flip the switch so we can download it. Since it's the weekend I assume we'll start to see it rollout Monday or Tuesday but that's my best guess.
[AT&T Samsung Galaxy S6] OddlyBorderline:
Someone try changing their phones time to Tuesday? I can't I'm on crickets network but anyone on atts can
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Nope. I've set my date as far as May 15. Nothing... it's not on their servers yet.
[AT&T Samsung Galaxy S6] OddlyBorderline:
Out of curiosity did you set the dates to may 15 before Friday or after? If it was before they might not have been on the server, now they are.
[AT&T Samsung Galaxy S6] jlongrc:
Do they normally let things release on weekends? Wonder if they try to time releases for days when their support is fully staffed.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
I did it today.
[AT&T Samsung Galaxy S6] s629c:
I don't think it's date based. It's either there or not there

Enter this code in dialer for an alternative software update menu that also has no resets

*#8736364#
[AT&T Samsung Galaxy S6] sugardaddy1979:
That's awesome info!
[AT&T Samsung Galaxy S6] SuzukiGS750EZ:
That *#8736364# didn't work for me....
[AT&T Samsung Galaxy S6] s629c:
That's strange, make sure when you paste it, there's no extra spaces or anything. Has worked since my s4 and originally found on the s3
[AT&T Samsung Galaxy S6] SuzukiGS750EZ:
Got it. Must have entered it wrong the first time. Thanks!
[AT&T Samsung Galaxy S6] troyboytn:
My guess is easiest would be midnight tonight eastern, though honestly I don't expect it for another week or more...
[AT&T Samsung Galaxy S6] CameronQuinn:
Hopefully soon.
[AT&T Samsung Galaxy S6] jona_12:
Yes you are right MM in on the way and about to knock our gates so be ready to get the new 16 New Features of Android 6.0 Marshmallow.
[AT&T Samsung Galaxy S6] CameronQuinn:
Anyone receive anything today?
[AT&T Samsung Galaxy S6] jona_12:
Not yet
[AT&T Samsung Galaxy S6] CameronQuinn:
Well I hope I comes soon cause about done lol.
[AT&T Samsung Galaxy S6] jona_12:
Yes Samsung’s support site has made it clear that the update is out now for the Galaxy S6 on AT&T.
[AT&T Samsung Galaxy S6] CameronQuinn:
Yeah but ATT has not hit the flood gate button yet
[AT&T Samsung Galaxy S6] OddlyBorderline:
Oh every notification from this thread I see lifts up my heart, only to fall when I read about its lack of release.
[AT&T Samsung Galaxy S6] archie87:
The Active shouldn't be too far behind. I'm so stoked for this update.
[AT&T Samsung Galaxy S6] h3lluvaninjuhneer:
I think the update is out there now, as I got the attached result using the manual code (*#8736364#) to look for updates. But, I can't get it to download, and now it's saying "no updates."
[AT&T Samsung Galaxy S6] sand_bit:
The screenshot gives a download link to the OTA for BOJ9, nothing more. File still isn't up yet, we need to wait a bit more.
[AT&T Samsung Galaxy S6] bogdi1988:
active should be like a month behind the s6
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Lol, same here. Been like that for months now.
[AT&T Samsung Galaxy S6] Schwagz:
If the firmware size is in bytes (Which it most likely is) that would only be 38 MB, wayyy under Marshmallows 1.2 GB Patch...
[AT&T Samsung Galaxy S6] troyboytn:
Day 5 since Samsung posted the uodate specifics on its website. The powers that be at AT&T are now simply giving its customers a defiant middle finger. At this point all excuses are just that....
[AT&T Samsung Galaxy S6] knigitz:
Exactly, it's provisioning to the software here:

https://xdmd.sl.attcompute.com/agents/48653/1488/SS-G920AUCU3BOJ7-to-U3BOJ9-UP

Not what we want.
[AT&T Samsung Galaxy S6] OddlyBorderline:
Hate to be a pest, what exactly does that mean? Preparing for the update?
[AT&T Samsung Galaxy S6] dpw2atox:
From what I gather it's pointing still to the OJ9 security update and not 6.0 yet so AT&T hasn't flipped the switch yet so to speak.
[AT&T Samsung Galaxy S6] OddlyBorderline:
Awhhhh, yes. Forgot there was a OJ9 security update. I thought maybe that was 6.0 I must have over looked it, thanks man.
[AT&T Samsung Galaxy S6] Dante087:
Am I the only one to think to try: xdmd.sl.attcompute.com/agents/48653/1488/SS-G920AUCU3BOJ9-to-U3CPC2-UP
[AT&T Samsung Galaxy S6] Schwagz:
Just attempted the link and nothing was there, no download on my device. Seems like they're still prepping for it...
[AT&T Samsung Galaxy S6] Dante087:
I can't post links (haven't posted enough) but am currently downloading from that link to try. You have to put https:// first
[AT&T Samsung Galaxy S6] Schwagz:
Holy **** you're right. Its downloading, the OTA is up there, now to wait for the switch to flip.
[AT&T Samsung Galaxy S6] Dante087:
The question is can we install using this or do we have to wait until the switch flips... you might know first as my office internet isn't the fastest
[AT&T Samsung Galaxy S6] Schwagz:
I am currently at school. But at least we know it is finally available, maybe the OTA will launch tonight.

Update: The files done downloading, however I cannot open it on my GS6, will try to check at home.
[AT&T Samsung Galaxy S6] KnownDominance:
I am going to contact a customer rep as well and see if i can get the same response
[AT&T Samsung Galaxy S6] s629c:
Even if it's true, most reps wont give the info though :/
[AT&T Samsung Galaxy S6] KnownDominance:
I just contacted one and I got basically the same answer as the guy on reddit. I would basically consider it confirmed.

http://imgur.com/htQSsum

time is included
[AT&T Samsung Galaxy S6] s629c:
On reddit, other rep said 14th and the the one you talked to said not long after 15th. Take away is that it is coming soon though ?
[AT&T Samsung Galaxy S6] KnownDominance:
I assume it could start at midnight on the 14th and then be a staged rollout as they usually do
[AT&T Samsung Galaxy S6] bryantx24:
I also contacted AT&T and this is what they told me.

http://imgur.com/k3CtCx4
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
This makes me so happy! AT&T is giving us dates, and updates only 2-3 weeks apart! I hope I'm not getting too hyped...
[AT&T Samsung Galaxy S6] Cusa:
So we're getting it on the 14th?
[AT&T Samsung Galaxy S6] s629c:
Probabaly
[AT&T Samsung Galaxy S6] vang2k:
If that is true than I'll switch back to the S6. My S6 has been reformatted with ODIN sitting on my desk while I'm on my rooted HTC A9.
[AT&T Samsung Galaxy S6] s629c:
So if the note gets the MM update today, then we can expect to get the s6 update on the 14th. If not, then it was all a lie
[AT&T Samsung Galaxy S6] KnownDominance:
What sucks is I literally just bought a Nexus 6P not expecting to get Marshmallow for a long time
[AT&T Samsung Galaxy S6] s629c:
At least android n is coming for you this summer
[AT&T Samsung Galaxy S6] bcak610:
Can someone ask for S6 Active Android 6.0 release day, Im not from US :( Thanks in advance.:laugh:
[AT&T Samsung Galaxy S6] dpw2atox:
So I was checking out the AT&T Note 5 forums and it looks like a pre-M update is being pushed out right now which updates their baseband to N920AUCU2APB2. That's the build/naming convention that M uses so I guess they are doing a phased rollout? It also makes me wonder how the rollout will go for the S6......I guess we have to wait and see.
[AT&T Samsung Galaxy S6] ScottyNuttz:
I'm sure you'll cry yourself to sleep at night after you are done bragging about your N developer build.

---------- Post added at 11:58 AM ---------- Previous post was at 11:57 AM ----------

No way are you gonna get a straight answer on that... I would give it a few more months.
[AT&T Samsung Galaxy S6] ian1:
So isn't this the first US S6 to get MM?
[AT&T Samsung Galaxy S6] archie87:
Well if what AT&T is saying holds true, us S6 Active users should get it about a month after you guys.
[AT&T Samsung Galaxy S6] s629c:
Sprint got it yesterday
[AT&T Samsung Galaxy S6] junear:
Its coming March 14th as per my knowledge.
[AT&T Samsung Galaxy S6] harveson:
It works. The size is 1.3GB.

I'm downloading the update and will try to update soon!
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Is this a patch or 6.0.1?
[AT&T Samsung Galaxy S6] Dante087:
I would assume 6.01... I used the firmware number from the samsung update website to make the link
[AT&T Samsung Galaxy S6] harveson:
It seems like the 6.0.1. Will try to flash it to check though.

SS-G920AUCU3BOJ9-to-U3CPC2-UP

File size: 1.39GB
[AT&T Samsung Galaxy S6] Red5:
So irritating that its right there on the server, literally right there (all 1.3GB of it) and yet they sit on it.

Nice job on finding it.

For anyone needing a direct link to click on instead of copy/pasting, here: https://xdmd.sl.attcompute.com/agents/48653/1488/SS-G920AUCU3BOJ9-to-U3CPC2-UP
[AT&T Samsung Galaxy S6] dpw2atox:
I actually tried that a few hours ago and it wasn't working so seems like progress is being made, maybe they'll activate it later tonight? Based on the size aka 1.3GB it's 6.0.1. I'm curious if we can flash this via odin or not.
[AT&T Samsung Galaxy S6] Red5:
Perhaps. Maybe a timed thing like 12 noon PST. Im downloading the file right now but its extremely slow. Its been 8 minutes so far with another 2 to go.

*continues to put in *#8736364# and tap software*
[AT&T Samsung Galaxy S6] kwd114:
That is the question that I have. I am on BOJ7 but have downloaded the 2 files. Can we flash them via ODIN or is there another method?
[AT&T Samsung Galaxy S6] Dante087:
Thanks for posting the link... I'm still not at 10 posts
[AT&T Samsung Galaxy S6] ddgill:
Doesn't appear as though the S6 Edge equivalent (G925AUCU3CPC2) works with same link - anyone know if there's an entirely different address? Or just not available? Either way, great find.
[AT&T Samsung Galaxy S6] s629c:
I have the file downloaded but it has no file extension. Dont know the file type. Md5?
[AT&T Samsung Galaxy S6] kwd114:
WinRAR will open them....
[AT&T Samsung Galaxy S6] Red5:
I unziped it with 7zip and it does appear to be the 6.0.1 update for the regular S6. I dont see the file for the 925A model (S6 Edge) though, so maybe thats what they are waiting for?

Im contemplating on flashing the OTA file through recovery mode...

Edit: Also, just put '.zip' at the end of the file name.
[AT&T Samsung Galaxy S6] s629c:
Yup just did that. Now access to all files in it

Gonna look through it, but I'm not gonna risk flashing it
[AT&T Samsung Galaxy S6] Schwagz:
If you do flash through recovery, tell us if it's safe to install right now, I'm quite curious...
[AT&T Samsung Galaxy S6] s629c:
changed file "file_contexts" to a txt file and I'm seeing a lot of "sprint" near the bottom.
[AT&T Samsung Galaxy S6] knigitz:
The link was not working earlier today for the 1.3GB Marshmallow download (I had tried). I guess they had been preparing for the OTA this morning afterall. The reason the server was returning a hit was because they appended the -UP to the filename, as far as I can tell the previous OTA did not have that. Looks like they have reverted that change so the server is not detecting updates again.
[AT&T Samsung Galaxy S6] s629c:
If you decide to flash it as zip or through Odin, rememver that it could hardbrick
[AT&T Samsung Galaxy S6] Red5:
It looks there may have been one or two Sprint specific items added (Qualcomm and SLSI carrier file) possibly base level drivers or something along the lines, but that may have been from Samsung and just pushed out as one base 6.0.1 rom to everyone.

Im not going to try to flash it though, not worth the risk.
[AT&T Samsung Galaxy S6] rahilm:
I downloaded the OJ7->OJ9 update and the same Sprint stuff is in that one. I think I may take the leap and try it
[AT&T Samsung Galaxy S6] knigitz:
And literally the only thing that means, at this point, is waiting for them to put up a new xml formatted desc file pointing to that package. If this is a true release candidate it should be safe flashing via Odin. Though I think I'll error on the side of caution and wait for someone else to verify. ;)
[AT&T Samsung Galaxy S6] OddlyBorderline:
This is literally so exciting lol. Like it made my day seeing this. Hopefully we get it or someone tries to flash it via the downloaded file.
[AT&T Samsung Galaxy S6] rahilm:
I have successfully flashed the file via recovery through ADB sideload. It was recognized as a valid OTA zip and it went through the process. Phone rebooted and is now at the ATT logo. I'm going to give it ~10 minutes to see if it boots. At the very least, it looks like no hardbrick :)
[AT&T Samsung Galaxy S6] OddlyBorderline:
YOU THE MAN.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Good. I'm about to do the same but I want to see if anyone gets it working. (Ain't bricking my $600 phone)
[AT&T Samsung Galaxy S6] rahilm:
It worked, but it wiped /data. So backup first!
[AT&T Samsung Galaxy S6] OddlyBorderline:
What all exactly did you do, in a short tutorial if you don't mind? Like add the .zip extention then flash or?
[AT&T Samsung Galaxy S6] Red5:
Screenshot of version and baseband?
[AT&T Samsung Galaxy S6] rahilm:
THESE INSTRUCTIONS ARE NO LONGER MAINTAINED. UPDATED DIRECTIONS WILL BE HERE: http://xdaforums.com/att-galaxy-s6/general/android-6-0-1-g920aucu3cpc2-att-t3371227

EDIT: HIT THE BRAKES ON THIS. I'M HAVING TROUBLE GETTING THROUGH THE SAMSUNG SIGN-ON. NOT SURE IF I FORGOT MY PASSWORD OR SOMETHING ELSE IS WRONG. DON'T FLASH UNTIL I CONFIRM I CAN GET THROUGH THIS STEP

EDIT2: FORGOT PASSWORD. ALL GOOD TO GO :)

Alright, the file linked above does indeed work. I flashed using ADB. Flashing via this method WILL WIPE EVERYTHING SO BACKUP FIRST. Short tutorial (I'm not responsible for anything that goes wrong, but this worked for me):

1) BACKUP

2) Download package from https://xdmd.sl.attcompute.com/agents/48653/1488/SS-G920AUCU3BOJ9-to-U3CPC2-UP

3) Append .zip to filename

4) Reboot into recovery. Turn off phone and wait a minute for it to completely turn off. Hold down Volume Up + Home + Power until you see a little Android guy. It will say Applying System Update or something like that possibly, and just let it do it's thing until a menu comes up.

5) Select Apply Update from ADB Sideload

6) Make sure you have Android Platform Tools on your computer (there's other guides for this)

7) command 'adb sideload <path to downloaded .zip file here>'

8) Wait patiently

9) Phone reboots and will hang at AT&T logo for 5+ minutes. Just wait this out

---------- Post added at 12:52 PM ---------- Previous post was at 12:52 PM ----------

Will upload as soon as I get through the setup process.
[AT&T Samsung Galaxy S6] knigitz:
You are, perhaps, the first AT&T subscriber on this baseband. Congrats! Can we get a screenshot of the version and baseband?

For sideload instructions (should be possible to update via recovery using the same package):

http://androiding.how/how-to-install-ota-updates-manually-using-recovery-and-adb-sideload/
[AT&T Samsung Galaxy S6] s629c:
Roger dat. Will wait for confirmation and screenshots.

---------- Post added at 03:59 PM ---------- Previous post was at 03:55 PM ----------

Btw, hardbrick means it won't boot anymore. Broke kernel and can't be fixed. Soft brick = stuck on boot. Fixed by reflashing
[AT&T Samsung Galaxy S6] dpw2atox:
Anyone found a working link for the Edge version? I changed it from 920 to 925 but there's no file.
[AT&T Samsung Galaxy S6] rahilm:
Screenshot proof. Have at it :)
[AT&T Samsung Galaxy S6] sand_bit:
Trying to update via sideload now.
[AT&T Samsung Galaxy S6] kwd114:
I too can confirm it works. What I did was ODIN back to BOJ7, then used the ADB sideload to install BOJ9 first followed by CPC2. Now on MM.
[AT&T Samsung Galaxy S6] Red5:
March 1st security patches. Really AT&T, REALLY?!?
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Blame AT&T. International versions are already on May.
[AT&T Samsung Galaxy S6] dpw2atox:
I love that the compile date for the kernel is 2 months ago......clearly they've been sitting on their asses err "testing" it while we waited.
[AT&T Samsung Galaxy S6] RoryB:
Could you just rename the file to update.zip in your sdcard and install it using the phone's recovery?
[AT&T Samsung Galaxy S6] knigitz:
Why did you ODIN back to BOJ7 first, if you don't mind me asking?

---------- Post added at 09:06 PM ---------- Previous post was at 09:06 PM ----------

Since Odin and adb sideload is working, I don't see why that wouldn't work. I think I'll give it a go.
[AT&T Samsung Galaxy S6] rahilm:
I tried that initially, but recovery couldn't mount /sdcard to access the file. YMMV
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Damn, I keep getting a "cannot read" error in the command window. I renamed the file to ota.zip. what else is wrong?
[AT&T Samsung Galaxy S6] sand_bit:
I'm currently trying to sideload from Cricket's BOJ6 directly to the AT&T Marshmallow. I'll update if it works.
[AT&T Samsung Galaxy S6] kwd114:
I was using the Cricket BOJ6 so I had to get back to the ATT base.
[AT&T Samsung Galaxy S6] Red5:
Im wondering why sideloading the OTA file wiped data. I thought that the whole purpose of OTA files was to save your data?
[AT&T Samsung Galaxy S6] Schwagz:
I am taking a wild guess and saying what you're gona do is install by using the "Apply ZIP" command, and if you dont mind me asking, would you mind helping me out if it works fine for you? Id rather not risk destroying this phone...
[AT&T Samsung Galaxy S6] knigitz:
Method 1:

http://androiding.how/how-to-install-ota-updates-manually-using-recovery-and-adb-sideload/

Looks like this method may not work for the Galaxy S6.
[AT&T Samsung Galaxy S6] kwd114:
Here is what I did coming from the Cricket BOJ6....

1. Restored via ODIN back to AT&T BOJ7. Boot phone into download mode (Volume Down, Home and Power) and restore.

2.Downloaded the BOJ9 update link from earlier in the thread. Applied it via ADB Sideload. (Volume Up, Home and Power, the apply update via ADB).

3.Did the same for the MM update.

All went without a hitch.
[AT&T Samsung Galaxy S6] sand_bit:
Sideloading from Cricket BOJ6 to Marshmallow, currently flashing to AT&T BOJ7.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
What am I doing wrong? I open a command window and do the adb sidelong but it keeps saying it cannot read the zip.
[AT&T Samsung Galaxy S6] kwd114:
What are you typing in? Did you add a .zip extension to the files you downloaded?
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Yeah. I renamed it "ota.zip", and that's what I type into the command window. Was I supposed to rename it before I downloaded it?
[AT&T Samsung Galaxy S6] kwd114:
I am wondering if you only renamed it and did not add the extension...... try it as adb sideload ota.zip.

Put that period at the end.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Nope nothing. I'll try redownloading it and renaming and adding the extension in case I missed something. Once again MM eludes me.
[AT&T Samsung Galaxy S6] kwd114:
Windows can be tricky with renaming files sometimes. When in doubt use the command line to make sure it is getting done the way you want it too.
[AT&T Samsung Galaxy S6] rahilm:
Make sure you're in the correct directory or that you're including the full correct path to the .zip file.

Quick way to check in windows is with the 'dir' command and making sure your ota.zip file shows up in the output.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
I'm opening the command window within the folder it's located. So the directory is exact.

EDIT: redownloaded and still nothing. "Cannot read"...[emoji22]
[AT&T Samsung Galaxy S6] OddlyBorderline:
Shouldn't I be able to just sideload from G290AUV3BOI2?
[AT&T Samsung Galaxy S6] Red5:
Right click whatever folder you have the download in, and select "Run as Administrator" and then adb sideload "name of update.zip"

See if that works for you.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Think that only works with executable programs.
[AT&T Samsung Galaxy S6] Red5:
Sorry, I meant right click on Command Prompt, run as Administrator, then cd (change directory) to where your update file is... then run your adb commands.
[AT&T Samsung Galaxy S6] ¿Will-it-Blend?:
Trying it now