LL > KK N910F - modem/BL - Galaxy Note 4 Q&A, Help & Troubleshooting

Tried reading through and searching the internet. I want to go back to KK, found the main guide on the internet but I can't find any information regarding the modem/BL. I recently installed BOC2 with matching modem/BL. The question is do I need to flash a different modem/BL for going back to 4.4.4.? If so, where can I find them as I have had no luck. Thanks
PS - I want to flash the Nordic 4.4.4.

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[Q]Downgrade from Lollipop to KitKat (ATT Galaxy S4 SGH-I337)

I have an ATT Galaxy S4 (no longer under contract) that is now running on StraightTalk. I did the upgrade from KitKat 4.4.4 (I337UCUFNJ4) to Lollipop 5.0.1 ( I337UCUGOC3). I really do not like the update and hopefully you all can help me out. I’ve been reading online about using the Odin software to flash back to a previous version. Can the flashback to KitKat be done without any ‘rooting’ as I'm not into that just yet? At this point but simply want the easiest way to return to KitKat 4.4.4. Is the process fairly simple and what are the steps and how can I get access to the I337UCUFNJ4 software? Thanks.
@ThinkWolfpack
Head over to http://www.sammobile.com/firmwares/ make an account and from there put your model number in ie (sgh-1337m) And scroll down ull find the stock 4.4.4 firmware download the one u want to use.
Then head over hear and u can find the guide to odin to stock http://forum.xda-developers.com/showthread.php?t=2616221
O and to answer ur other question no rooting required
thanks
xstokerx said:
@ThinkWolfpack
Head over to http://www.sammobile.com/firmwares/ make an account and from there put your model number in ie (sgh-1337m) And scroll down ull find the stock 4.4.4 firmware download the one u want to use.
Then head over hear and u can find the guide to odin to stock http://forum.xda-developers.com/showthread.php?t=2616221
O and to answer ur other question no rooting required
Click to expand...
Click to collapse
Thanks for the help winnepeg. It helped!! No problems at all!!

Correct flash order for rooting a stock firmware?

Hi guys
I recently moved to the note 4 910F from another device.
As I have always favored custom roms ( regardless if I was using a samsung or LG or another brand device ).
The problem I am facing now is that the xda Note4 forum seems to be incredibly messed up. There are literally tens of threads with useless information and whole new threads just for one download link or something.
If someone new like me comes to the Note 4 forum he will not know where to start. The previoux device I used had a beautifully organized XDA section.
Anyway. What I did until now was to flash :
1. flashed cf-root over the stock firmware and verified that it worked
2. installed busybox
3. tried to install TWRP as I have always used it . But , Their page said to make sure I have the correct bootloader installed.
So, I got back to the rom page that I wanted to use and the dev had links there for the correct bootloader and modem. Downloaded and flashed them with odin. Now my device was restarting every 1 minute or so and I no longer had any IMEI and baseband version was unknown
I fixed it by flasks the stock firmware with odin
Can you guys help me out with some correct information on how to be able to flash a custom rom ? I know how to root it but what bootloader do I need in order to install the custom recovery and flash a new rom ?
Thank you in advance.

how to get back to stock EVERYTHING with my S4?

Hello,
i have my S4 for many years now, i flashed a lot of custom roms / root, etc
now i need to get back to the original factory statue at everything in my phone
then, how to get lastest stock firmware for my phone?
it's S4 i9500 international version
guide me with links and detailed steps please, it's a lot of years i didn't flash anything at my phone now,
thanks in advance
Search the general general thread for instructions to flash a stock ROM with Odin.
Thread closed.
Duplicate of this one: https://forum.xda-developers.com/galaxy-s4/help/how-to-to-stock-everything-s4-t3621299

How to go back to kitkat

Anyone knows the easiest way to go back to kitkat? Will I just need to flash the stock rom? I'm on stock lollipop right now.
Few months ago i asked the same question, i searched for it my self because its already here in the forum . Anyway my advice is you stick to lollipip. The device is faster and more apps are compatible

Need help with a galaxy s4 gt-i9505

Hi everyone,
just a long-time forum-lurker in the dark here, now I'm here asking for help to restore my galaxy s4.
Here's the story:
gt-i9505 no brand, italian official firmware 4.4.4 (kitkat), never updated, only used towelroot to gain rood adn unistall couple of unused apps.
everything worked fine
Then i decided to upgrade to lollipop.
downloaded last samsung lollipop rom for my phone from sammobile, made a full backup via TWRP Recovery, and installed lollipop via Odin.
Then the nightmare begun :
1st problem, no modem, no connection, only wifi, i restored EFS, still not working, reinstalled modem via odin and then i got my imei and connection again.
2) think i've tried to change the rom to a custom downloaded here (i don't even remember the name), then i tried couple other roms.
this as far as i remember
Now the phone has a samsung original lollipop rom, wifi won't turn on, data not working, knox status is obviously altered (so i cannot restore it via kies or whatever the software name is now) BUT It overheats a lot after few minutes and i'm forced to shut it off to not damage it.
I'd like to restore it to a full working condition, i think i've messed up with bootloaders, modems and roms from different android versions.
can anyone help ?
Current status is
model : gt-i9505
android security patch : 2016:11-01
Baseband version : I9505XXUGNK2
kernel version : 3.4.0-5978264 [email protected] #1 Wed Nov 16 19:05:34 KST 206
build version : LRX22C.I9505XXUPK2
Android SE state : enforcin SEPF_GT-i9505_5.0.1-1_0070 Wed Nov 19:10:21 2016
SEcure Boot status Type:SAmsung
Knox VErsion 2.3
Hey, @dokrobei
Take a look on my Guide.
You need the guide clean install from the scratch. Please read it carefully till the end. There avaible links with all necessary stuff like modem/bootloaders/stock rom-firmware/recommend customs roms etc.
Hi @Retrial, thanks for the answer..
I've managed to reinstall stock KitKat 4.4.2 and working modem drivers, following another tutorial here. Now Wi-Fi, 3g and bt works fine, BUT the phone overheats a lot. It's not a battery problem and sure it's software related 'cause it wasn't like this before my stupid first attempt to upgrade to lollipop.
I've searched the forum for the overtheating near the flash zone problem, some say that is a microsd problem (wich I removed), some other that's a battery problem (wich is not in my case).
Do you think I should start from scratch again following your guide? IHow do I know wich modem / bootloader is right for my phone? I think the problem is there, maybe wrong modem version..
dokrobei said:
Hi @Retrial, thanks for the answer..
I've managed to reinstall stock KitKat 4.4.2 and working modem drivers, following another tutorial here. Now Wi-Fi, 3g and bt works fine, BUT the phone overheats a lot. It's not a battery problem and sure it's software related 'cause it wasn't like this before my stupid first attempt to upgrade to lollipop.
I've searched the forum for the overtheating near the flash zone problem, some say that is a microsd problem (wich I removed), some other that's a battery problem (wich is not in my case).
Do you think I should start from scratch again following your guide? IHow do I know wich modem / bootloader is right for my phone? I think the problem is there, maybe wrong modem version..
Click to expand...
Click to collapse
First of all there is no need to still be on KitKat...a lot of apps don't support Kitkat nowdays...and is outdated.
I will recommend first to proper upgrade to Lollipop stock and then use some of the latest android Pie Custom JDC Roms by following my complete guide. As I said above there is a full guide with links and very well explained steps. The latest Firmware for our S4 i9505 is QK1 - No matter which country you will choose, and it's recommened to have the latest. Just read it carefully till the end and check the asterisks.
The overheating it may be no compatible Modem/Bootloader since you messed up with Lollipop. To check what Modem and Bootloder you can simply install "Device HW Info" or "Phone Info" app and check.
Let me know how it goes, and if you have any question or problem feel free to ask. Good Luck :fingers-crossed:
Retrial said:
First of all there is no need to still be on KitKat...a lot of apps don't support Kitkat nowdays...and is outdated.
I will recommend first to proper upgrade to Lollipop stock and then use some of the latest android Pie Custom JDC Roms by following my complete guide. As I said above there is a full guide with links and very well explained steps. The latest Firmware for our S4 i9505 is QK1 - No matter which country you will choose, and it's recommened to have the latest. Just read it carefully till the end and check the asterisks.
The overheating it may be no compatible Modem/Bootloader since you messed up with Lollipop. To check what Modem and Bootloder you can simply install "Device HW Info" or "Phone Info" app and check.
Let me know how it goes, and if you have any question or problem feel free to ask. Good Luck :fingers-crossed:
Click to expand...
Click to collapse
ok,so
downloaded latest italian rom wich is I9505XXUHPK2_I9505ITVHPL1_ITV from sammobile and installed it via odin.
installed compatible bootloader and modemas per your guide (PK2)
rebooted to check if everything was working using stock before going to custom...and...
it started overheating as soon as i tuned on wifi. i only managed to install phoneinfo to check wich modem i have as you suggested, then i had to turn the phone off it off cause it became reeally hot and i thought i could break it. modem chip is "mdm9215m". any suggestion? maybe i should try to instale all the lollipop modems / bootloaders from your post...
dokrobei said:
ok,so
downloaded latest italian rom wich is I9505XXUHPK2_I9505ITVHPL1_ITV from sammobile and installed it via odin.
installed compatible bootloader and modemas per your guide (PK2)
rebooted to check if everything was working using stock before going to custom...and...
it started overheating as soon as i tuned on wifi. i only managed to install phoneinfo to check wich modem i have as you suggested, then i had to turn the phone off it off cause it became reeally hot and i thought i could break it. modem chip is "mdm9215m". any suggestion? maybe i should try to instale all the lollipop modems / bootloaders from your post...
Click to expand...
Click to collapse
After every flash the device become hot. Let the rom settle for a while.
If you have PK2 Firmware then you need PK2 Modem and Bootloader. So no, don't try other modem/bootloader.
Retrial said:
After every flash the device become hot. Let the rom settle for a while.
Click to expand...
Click to collapse
I flashed it last night and checked if it was working this morning. I'm sure the high temps are not related to the usage or to the battery. It become hot eachtime i turn on wifi. Havent tried with data but I think it will be the same thing.

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