yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy Note 4] norbarb:
No this is not your way. You can ODIN to EPK5 and get just one update to EQD1
[AT&T Samsung Galaxy Note 4] teshurtz:
OK now I am in trouble I think. I downloaded and extracted the odin files from the first post

(Marshmallow full odin file thanks to [MENTION=7525976]mmaku[/MENTION]

EPH5 ODIN FILE) link

I enabled usb debugging (i only changed that setting)

Then powered down and booted in download mode.

Then I ran odin and put the four files in their respective locations and hit start. It ran for a few min and said "failed"

My phone says

odin: flash write failure

[120]eMAC write fail: System

Phone is sitting in failed mode with odin still running. not sure what to do.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Are you using good USB cables? Cheap cables have been known to cause failures...
[AT&T Samsung Galaxy Note 4] ljjehl:
Did your device actually connect and show "ID:COM section" turn in to blue color??

If you're not sure, check out step 7 here : http://www.samsungodindownload.com/odin-tutorial/
[AT&T Samsung Galaxy Note 4] bhaktibhushan:
Please tell me how to activate jio volte on at &t note 4 n910A
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Not many of us are in India, so you may be in the wrong forum for this info...

Most carrier branded phones do not work with other carriers, when it comes to enabling VOLTE... It's best to use a non-carrier branded phone. ATT often hard-wires these things to its own network.

Nonetheless, Google brought me here: (Something you can try)

http://newsmarkets.in/how-to-enable-reliance-jio-volte-on-your-phone/

---------- Post added at 02:58 PM ---------- Previous post was at 02:49 PM ----------

Just an update, looks like Jio has an app on Android market for those who cannot enable VOLTE... Why not use that?
[AT&T Samsung Galaxy Note 4] norbarb:
Did you receive PM from me?
[AT&T Samsung Galaxy Note 4] teshurtz:
It did connect and turned blue.

I was able to get it to work by unplugging the phone, pulling the battery, hitting reset in odin. reloading the files.

I then turned the phone back on. It loaded with a screen saying something like the update had failed and i needed to restore the firmware. I connected to the PC again and it reconnected to odin. i hit start and it worked this time.
[AT&T Samsung Galaxy Note 4] ljjehl:
does sound like a wishy washy cable. It could also be the drivers also causing issues. That's why I only use the basic samsung usb drivers instead of installing the complete Kies drivers
[AT&T Samsung Galaxy Note 4] fendimanaf86:
I try to update but failed.

My phone is N910F with N910A bootloader.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
You might want to try a forum for the 910F, international. We all have 910A here. Difficult to say how to help.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
I in the last 30 hours, both my and my wife's note 4s have become completely unstable, hanging constantly, lagging, and ultimately rebooting multiple times an hour. Has anyone else experienced this?
[AT&T Samsung Galaxy Note 4] ljjehl:
Mines been fine so far. I'm on latest April security updates with no issues. Maybe you both have that malware issue that's been going around.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Must be an app we both use that updated and is messing with our phones... I think I spontaneously rebooted 10 times yesterday.
[AT&T Samsung Galaxy Note 4] ljjehl:
You should download catlog or similar and run recording. If it reboots, maybe you can find out what's causing it in the logcat
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
What do I search for? Says it needs root... Can I get what I need without root?
[AT&T Samsung Galaxy Note 4] ljjehl:
Darn, and Catlog is the best at recording it :(

Maybe you can with Ultimate Logcat. It has something called crash finder. I was hoping to find something that records like Catlog does. If an app was causing it, you could get the stack trace to see what it is, but not sure what Ultimate Logcat does as for crash finder.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Doh... Phone continues to reboot after a factory reset... I'm in Safe Mode now... Seeing if that saves me...

Has anyone found a solution for this, or is this likely a hardware issue?
[AT&T Samsung Galaxy Note 4] ljjehl:
If you already did a factory reset, might as well reflash back to the latest Odin stuff, then update to latest afterwards.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Yeah... It's either the battery or something wrong with the power circuit. Talked to Samsung. I've got a new Anker batter arriving this week, OR, its going to cost me $75 for Samsung to repair this puppy.

ODD thing is, this started happening with my phone/battery IMMEDIATELY after I tried my wife's dying battery in MY phone...

Looks like BOTH our batteries may be dying at the same time? ODD.
[AT&T Samsung Galaxy Note 4] ljjehl:
Wow, that is odd.
[AT&T Samsung Galaxy Note 4] will5:
This updates will kill most batteries with one or one and a half year or more of use.

Updates use lot of power and most samsung batteries will get damaged.

I killed two genuine batteries with the updates. They will keep working, but after a few days they will act weird and start losing capacity, shutting the phone at 10% left, etc. After some weeks, swollen will be noticeable.

You can have some luck and own a battery that last 2 or 3 years. But newer batchs of note 4 batteries wont last near that.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Well, the phone spontaneously reboots even with a new battery. I sent the phone back to Samsung this afternoon. They'll repair it and send it back. $72 covers whatever they find. Eeh. Cheaper than a new phone I guess...
[AT&T Samsung Galaxy Note 4] mauri311:
Is happening to me. Did you find out something. It started to happen one day. I think I replaced the battery. Have you done anything? the video are hanging too.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
I paid Samsung $72 and sent it in for repair. I have two theories as to why:

1. Installing these updates - especially one after the other generates a LOT of heat on the phone... I think I cooked it. My wife's problem was due to an old battery... her's shuts down at 20% mine shuts down randomly all the time. I didn't do nearly as many ODIN installs + zip file updates on hers. I think her's is fine.

2. Alternatively, I had used a portable battery recharger -- Anker. I wonder if the portable battery charger did somthing to the charging circuit of the phone... Samsung is treating this as a "power" issue... so.... Could be the portable battery charger...
[AT&T Samsung Galaxy Note 4] mmaku:
New software update for Samsung Galaxy Note 4

Here is the current update: Android 6.0.1 Marshmallow

The details Release date:*May 22, 2017. Android version:*6.0.1. Security patch level (SPL):*May 1, 2017

Baseband version:*N910AUCS2EQE1

Kernel version:*3.10.40-8932341Build number:*MMB29M.N910AUCS2EQE1*

Previous version required:*N910AUCS2EQD1

File size:*28.3MB

The updates

What's new:*Android device security updates
[AT&T Samsung Galaxy Note 4] will5:
Yes, updates kills phones and batteries.

There is no thermal protection or thermal throttling during update and boot process.

So be carefull and dont let the phone get too hot. Update without the back cover or blown some air during the update.

Mine smell to burned plastic after an update.
[AT&T Samsung Galaxy Note 4] alexfca1:
update 1 mayo 2017

please

Release date: May 22, 2017

Android version: 6.0.1

Security patch level (SPL): May 1, 2017

Baseband version: N910AUCS2EQE1

Kernel version: 3.10.40-8932341

Build number: MMB29M.N910AUCS2EQE1

Previous version required: N910AUCS2EQD1

File size: 28.3MB
[AT&T Samsung Galaxy Note 4] norbarb:
I updated first post
[AT&T Samsung Galaxy Note 4] mrgnlit:
First off thanks for all this info and downloads. you have been real lifesaver!

So I did the whole odining thing back down to EPK5 and I cant find a way to get from EPK5 to the next rung. Am I missing a download or do I have to re do it and install EPH5 instead.
[AT&T Samsung Galaxy Note 4] norbarb:
There is one under Other official security updates and last one is on top of first post

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] spocko:
WARNING:

According to this post, EQD1 increments the bootloader, so updating to that version or newer will prevent you from being able to go back to an older version.

http://xdaforums.com/showthread.php?p=72426515

Edit: False alarm, see next post.
[AT&T Samsung Galaxy Note 4] norbarb:
No is not , bootloader still version 2

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] spocko:
Glad to hear that, thank you. How do you check the bootloader version?
[AT&T Samsung Galaxy Note 4] norbarb:
N910AUCS2EQE1 - this is bootloader version.
[AT&T Samsung Galaxy Note 4] trevster:
Hmmm installation correction for mine

My phone was running EH7 and I updated all the patches. It doesn't go as streamlined as you'd think.

Every update that I did, yes the phone restarts but it will hang on the ATT globe every time. So I had to remove the battery, refit, try again, remove the battery, refit, try again. Up to 5 times I did that and finally I got the green screen for updating apps; it gets on my nerves after 3 updates into updating.

Also, if you're updating by SD Card, just put the downloaded zip file onto the SD card, don't extract it to a folder and put the whole folder onto the SD card. The phone will extract it for you.

When using the firmware upgrade from Android 5 to Android 6, when using Odin, if the zip files come with all 4 rar files ie BL, CSC etc, put all the files in Odin and start the update. Putting one file into Odin like some search engines suggest, is wrong; if the zip file comes with all 4 then put on all 4. Otherwise, the phone will hang on the ATT globe and you wont know what happened till you go back into the bootloader and it'll tell you at the bottom ie 'wrong CSC match' or something like that.
[AT&T Samsung Galaxy Note 4] norbarb:
I'm just wondering why did you get this way of you could go to EPK5 and then you need just 2 updates?

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] will5:
I thought the same, but you dont need to reboot after an sd update. Phone will never show "updating apps" but will finish booting after a very long time (like 15 minutes) and will overheat a lot, but will reach initial screen.

Taking out the battery could cause additional problems.
[AT&T Samsung Galaxy Note 4] mr_manny:
Are there any md5 Hashes available for update files files?

Looks like I will finally be able to update my note 4

thanks
[AT&T Samsung Galaxy Note 4] mr_manny:
md5 hashes for the note4 manual update files...

checking SS-N910AUCU1BNK3-to-U1COC2-UP.zip

edb49d3f42f03e9eafec065b7f23d552 SS-N910AUCU1BNK3-to-U1COC2-UP.zip

checking SS-N910AUCU1COC2-to-U1COC4-UP.zip

88aa3f50be4b54f3666d1b913ba88610 SS-N910AUCU1COC2-to-U1COC4-UP.zip

checking SS-N910AUCU1COC4-to-U2DOI2-UP.zip

1be1792180a5686367553d149af1ca02 SS-N910AUCU1COC4-to-U2DOI2-UP.zip

checking SS-N910AUCU2DOI2-to-U2DOI3-UP.zip

1b226a91e453f97c063082b0ae9c1eef SS-N910AUCU2DOI2-to-U2DOI3-UP.zip

checking SS-N910AUCU2DOI3-to-S2DOI4-UP.zip

e13c299d3d85b56b10ae19aa89573ef0 SS-N910AUCU2DOI3-to-S2DOI4-UP.zip

checking SS-N910AUCS2DOI4-to-S2DOI6-UP.zip

f0b4a7a2213e1cbd71d1cc765c540c16 SS-N910AUCS2DOI4-to-S2DOI6-UP.zip

checking SS-N910AUCS2DOI6-to-U2EPH5-UP.zip

387911aceace45e9df240022b49dd9b6 SS-N910AUCS2DOI6-to-U2EPH5-UP.zip

checking U2EPH5-to-U2EPK1.zip

3e23dec67f4c6a420194e6f9469614b2 U2EPH5-to-U2EPK1.zip

checking U2EPK1-to-S2EPK2.zip

480598830fd0d2b191cf38b79e92fe9d U2EPK1-to-S2EPK2.zip

checking S2EPK2-to-S2EPK3.zip

de20e85f71d85f4028885bffe87c2697 S2EPK2-to-S2EPK3.zip

checking SS-N910AUCS2EPK3-to-S2EPK4.zip

2cfe3dc620837ea4297978369be55fd1 SS-N910AUCS2EPK3-to-S2EPK4.zip

checking SS-N910AUCS2EPK4-to-S2EPK5-UP.zip

8e604e75ba2da21ae705543b0464ce67 SS-N910AUCS2EPK4-to-S2EPK5-UP.zip

checking N910AUCS2EPK5-to-S2EQD1.zip

1a83e7e466bbbaaf884a6d3e9c60cc0c N910AUCS2EPK5-to-S2EQD1.zip

checking N910AUCS2EQD1-to-S2EQE1.zip

e5c994ebac6b69a3fd5b173608f0df8a N910AUCS2EQD1-to-S2EQE1.zip

Took a while, but all updates and security patches have been applied.

Removing the phone's rear cover, a good SDcard and Paitence are my recomendations for anyone else performing this upgrade.

Thanks again for providing all of the necessary files and instructions.

I'm currently out of the country, and don't have a windows system (and to lazy to setup a windows vm on my linux box).

your efforts are very much appreciated, honest :)
[AT&T Samsung Galaxy Note 4] WasifSal:
On build number AUCUCOC4 is this the procedure that I should adopt?

KINDLY CORRECT ME, Thanks

1. Update through ODIN to EPH5

2. Then flash the files one by one?

Also what settings do i have to check while in Odin.

Can anyone care to help a noob? :|
[AT&T Samsung Galaxy Note 4] norbarb:
Yes. You are correct. Check first time start.

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] WasifSal:
First Time Start is the option in Odin?
[AT&T Samsung Galaxy Note 4] norbarb:
Something similar. I did not flash my phones for long time.

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] mmaku:
We got a new update for note 4: Android 6.0.1 Marshmallow

The detailsRelease date:*June 20, 2017

Android version:*6.0.1

Security patch level (SPL):*June 1, 2017

Baseband version:*N910AUCS2EQF1

Kernel version:*3.10.40-8932341

Build number:*MMB29M.N910AUCS2EQF1

Buildfingerprint:*6.0.1/MMB29M/N910AUCS2EQF1

Previous version required:*N910AUCS2EQE1

File size:*27MB

TWhat's new:*Android device security updates
[AT&T Samsung Galaxy Note 4] Cali4niaWK:
Is the EQE1 to EQF1 file going to be available soon to manually update the phone with?
[AT&T Samsung Galaxy Note 4] mmaku:
Norbarb usually extracts the files for us. EQE1 to EQF1 file will be available when he can avail.
[AT&T Samsung Galaxy Note 4] tsgriggs2:
Need help with updating...

I have never done this before. I am a developer and this device is used for testing. Here are the current details:

Model: SM-N910A

Android Version: 5.0.1

Baseband Version: N910AUCU1COC4

I would like to get this device to Android 6.x, so that we can still use it. I'm obviously not getting updates from AT&T anymore (except for rare security updates), and I'm wondering how to upgrade it without rooting. This device currently doesn't have a sim card in it. If I were to get a sim card from one of our iPhones, would that allow me to get the updates, or would I need active AT&T service? I saw this thread, but I noticed all the updates are for versions after mine. Is there a way for me to accomplish this?

Sorry if I am asking stupid questions. Thanks, in advance, for any help!

PLEASE DISREGARD! I figured it out!
[AT&T Samsung Galaxy Note 4] alexfca1:
update S2EQF1 PLAESE

PLEASE

•Release date: June 20, 2017

•Android version: 6.0.1

•Security patch level (SPL): June 1, 2017

•Baseband version: N910AUCS2EQF1

•Kernel version: 3.10.40-8932341

•Build number: MMB29M.N910AUCS2EQF1

•Build fingerprint: 6.0.1/MMB29M/N910AUCS2EQF1

•Previous version required: N910AUCS2EQE1

•File size: 27MB
[AT&T Samsung Galaxy Note 4] norbarb:
I did update OP with this new security update
[AT&T Samsung Galaxy Note 4] Huong.pn:
Current, my device Galaxy Note 4 AT&T. However, when i check update for device its only show device up to date.

---------------------

Android: 6.0.1

Android security patch: august 1, 2016

Kernel version: 3.10.40-8932341

Build number: MMB29M.N910AUCU2EPH5
[AT&T Samsung Galaxy Note 4] DrBazinga:
Hi,

I'm running DOI2. Can I flash the full EPH5 through Odin (if i have the default recovery, can I make a full wipe ?) and then flash these step by step :

U2EPH5 to U2EPK1

U2EPK1 to S2EPK2

S2EPK2 to S2EPK3

S2EPK3 to S2EPK4

S2EPK4 to S2EPK5

S2EPK5 to S2EQD1

S2EQD1 to S2EQE1

S2EQE1 to S2EQF1

Thanks in advance
[AT&T Samsung Galaxy Note 4] norbarb:
There is EQE1 full firmware available in this forum.

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] ODSTZ3RO:
Is anyone on the latest firmware still experiencing charging issues?
[AT&T Samsung Galaxy Note 4] will5:
Charging issues are caused by deffective battery or deffective charging circuit on phone. Not rom related.

Most 1.5 or more years old batteries are damaged by the heat/power consumption the updates produces. Thats why many people found charging issues after updating to 6.x.x
[AT&T Samsung Galaxy Note 4] kparikh82276:
Very nice explanation. I wondered why I'd have issues with charging.

Need to update my battery.
[AT&T Samsung Galaxy Note 4] mmaku:
At&t has updated the note 4

Release date:*July 21, 2017

Android version:*6.0.1

Security patch level (SPL):*July 1, 2017

Baseband version:*N910AUCS2EQG1

Kernel version:*3.10.40-8932341

Build number:*MMB29M.N910AUCS2EQG1Build fingerprint:*6.0.1/MMB29M/N910AUCS2EQG1

Previous version required:*N910AUCS2EQF1

File size:*29MB

Norbarb could you update page one
[AT&T Samsung Galaxy Note 4] kparikh82276:
Love this community, and I'm so happy to belong to a race of human beings that promote assistance and development of current unsupported technology by OEM or carriers. I'm planning on taking out my note 4 again updating and see how the phone behaves.
[AT&T Samsung Galaxy Note 4] norbarb:
Yes I will. I got move out from Note 4 and if you want to take over I will PM some info for you.

On Edge of Galaxy
[AT&T Samsung Galaxy Note 4] mmaku:
i would be glad to take over but am away from US. i think as usual, we have two more updates only for the note 4.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
I could take over if needed. I'm in the states, but do travel from time to time.
[AT&T Samsung Galaxy Note 4] ODSTZ3RO:
My battery's charge wasn't being displayed properly even after several charges, factory reset fixed it. Apparently it was somewhat rom related, my battery is new. Forgive me for being a bit vague when initially asking the question. Damn, I wish there were more noteworthy updates. Oh well..
[AT&T Samsung Galaxy Note 4] norbarb:
OK i did update OP but this is last update i will post in Note 4 forum. Can one of you take over. If any of you need any info PM me . I think Shanghai.Knight know how to get files from servers.
[AT&T Samsung Galaxy Note 4] mmaku:
Thax a lot for making this thread very successful. Alright let Shanghai take over.
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Sent you a PM...
[AT&T Samsung Galaxy Note 4] will5:
You will probably experience the same problems soon, sadly.
[AT&T Samsung Galaxy Note 4] Timbaland7:
I've done my best to read through the thread. I just got this device and it is still on DOI2 5.1.1. I click on Software updates and it says my device is up to date, which is insane. It doesn't look like DOI2 through DOI5 are available anymore. The links in the thread that I found are all dead. Is there any other way to update my software?
[AT&T Samsung Galaxy Note 4] ljjehl:
If I remember right, you can easily go from DOI2 to PK5 by using the latest Odin files and flash via Odin
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Links in the first post are live.

I suggest using the ODIN file posted in this other thread:

https://xdaforums.com/note-4-att/general/n910aucs2eqf1-4-file-odin-6-0-1-firmware-t3632490

Then you can do just one individual updates from there.

Warning, your phone will get HOT when doing these updates... Don't just do update after update after update. Let the phone cool down between updates or you will over heat it and end up with problems. I'm speaking from experience.
[AT&T Samsung Galaxy Note 4] trevster:
EDIT: It does work......if you have a 32GB sd card in and not a 256GB one

Doesn't work for me. I get a signature failed and I redownloaded the file too.
[AT&T Samsung Galaxy Note 4] trevster:
Yes, use Odin and PK5. What the instructions doesn't tell you is that you must extract PK5 and all the zip files within PK5. Then using Odin, you point the AP, BL, CSC and that other box to the MD5 file in each folder. Turn on developer options on your phone by going into settings > general>tap build 3 times and that turns on developer mode. Then restart the phone press volume up, on/off switch and the home key (that front button) until you see a small blue blurb at the top of the screen where it comes up saying 'SAMSUNG GALAXY NOTE 4'. When it goes into that separate menu, volume down to 'reboot into bootloader and press the on/off switch once. Then Odin will add the device and from there, you can start the firmware update.
[AT&T Samsung Galaxy Note 4] norbarb:
There is easy way to say " Doesn't work for me." I'm 100% sure that whatever you do and you have error is on user end, this mean YOU. You doing something wrong. Maybe you should ask: " what i should do if signature fail?"

1. What is your build and to what build you trying to update ?

2. Are you using stock recovery ?

3. Is your update file in root of sd-card ?

4. Did you try to update using ODIN ( what version of ODIN) and are files from this post : https://xdaforums.com/note-4-att/general/n910aucs2eqf1-4-file-odin-6-0-1-firmware-t3632490

5. If something is not clear for you ask before you do anything.

Be more polite and search more before you shoot that something is not working. I personally think we should get back to 18 century and learn how to appreciate and respect others and they work.

This is not about you this is about us all.
[AT&T Samsung Galaxy Note 4] shleechan:
Hi there, I'm Shlee and I'm trying to update my phone from... forever ago. Since I moved to Germany, it won't connect to the AT&T servers for software updates and keeps telling me my phone is up to date (running 5.1.1, because I had to factory reset). I've downloaded all the files up to D017->EPH5 and have been flashing my phone up to that. I've also downloaded literally all of the files from the first post on this thread. My question is, do I have to literally go through and install every single one of those updates? Or can I skip past some of them once I'm at a certain build? It'll be fine if I have to flash them (it'll just take me a hundred thousand years, that's fine) but I wasn't entirely sure if I needed to, so I thought I'd ask. Thank you so much in advance for your time!
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
PLEASE be careful doing that! You risk overheating and frying your phone. Use Odin to get as close as you can.

Start with this

https://xdaforums.com/note-4-att/general/n910aucs2eqf1-4-file-odin-6-0-1-firmware-t3632490
[AT&T Samsung Galaxy Note 4] shleechan:
I appreciate that! I have been letting my phone cool off between updates, but you'd still recommend using Odin?

Also, I downloaded Odin, but I've got no clue how to use it. Is there a tutorial for that somewhere? Sorry for being so new!

Edit: I figured it out, got to EQF1, will just flash EQG1 once my phone has had some time to cool down. I so appreciate your advice and suggestion! Thank you so much! :D
[AT&T Samsung Galaxy Note 4] boofman:
This is the thing that detracts me from updating. If I do, I'll wait for the Android N before doing so (if it ever comes around for our device)
[AT&T Samsung Galaxy Note 4] Shanghai.Knight:
Android N is not coming to this device. Updates are okay, but doing one update after the other keeps the phone hot, and getting hotter. You can do 1 update then you must let the device cool down to normal operating temperature. ODIN to as close as you can, then cool, then do the updates... It's best if you can do the monthly update, once per month.
[AT&T Samsung Galaxy Note 4] Farsquidge:
Many Thanks...

from an old XDA Dev with an old ATT Note 4 that I don't want to give up stuck in UAE with an Etisalat Sim...your updates are fabulous...:good:
[AT&T Samsung Galaxy Note 4] amsgh:
Im on COC5 and cant get past the ATT logo. You guys know what i can flash and preserve all of my data (music, videos, etc...)
[AT&T Samsung Galaxy Note 4] spocko:
How long did you wait? I recently updated to EQG1 using the method described in this thread, and the first boot afterward sat on the AT&T logo screen for several minutes. I was getting scared that something had gone wrong, but eventually the boot completed and everything seems normal.