Question Prevent firmware updates on SM-G998U1 unrooted - Samsung Galaxy S21 Ultra

What is the best way to prevent updates on SM-G998U1 unrooted? I like the Samsung Band Selector app which the next update will disable and want the future option to sell it with working knox. Currently the phone forces updates within a few days of automatically downloading them. The phone is not yet aware of this update and I wish to prevent it without rooting (however I have rooted many other phones over time and already have the phone set in developer mode). Thanks for your help.

The old code *#2263# still works so u can always access it that way

Or you can freeze the system update app

Related

How to Debrand a SM-G900F

Well this took some figuring out, as many said it had to be rooted first
well NO it does not
Now this only work on the SM-900F with the bootloader unlocked basicallysold in the EU to any Network and branded
eg Vodafone.Orange,O2,Three(as long as there is no three Logo if so the bootloader is locked)
so here is what you need
the Latest version of Odin
The latest Version of kies as it is needed (Yes i said that )
Now Your countrys unbranded rom this can be tricky to find but for example the UK its BTU
they also can be found on here in the stock Firmware section ( i'm sure some one will post a link as they have got berried somewere)
But they can be found on sammobile.com
now download the rom
Now if you have never used odin before please read up on this first i'm not going to do a Noobs guide
Now do a Factory wipe and wipe the cache in recovery mode first
Open odin and pit the phone into recovery mode with out it rebooting
Flash the stock rom
Now long gone are the days of multiple csc so here is how to fix
Now before some one jumps in and says Oh XDA do a app to sort this (Only works on rooted phones)
Now after the rom has flashed let the phone Boot
Now Google apps may fall over here but the factory wipe sorts them out
Now nearly there, as we all no if you plug your phone into kies it does not like it
Well this time as long as you have got the right rom it will show a long line of rom info
Now for the fun bit open kies and connect your phone
then klick tools and pic firmware upgrade and initialisation Kies will come up with a warning screen
Just click next and watch the magic happen
Kies will see that you have a stock BTU rom on But the CSC is something else so
It re downloads the rom and clears the previous CSC out
I did use the xda phone info to check the CSC and on mine it should before Kies VOD/BTU
After Kies it showed BTU
Now kies says i Have a BTU phone and the firmware is upto date
I have done six differant phones now on verious networks and they work
the Three ones are hard but rolling the rom back to the first one cleared the Bootloader then i flashed the stock rom
There was no rooting or Knox tripping or custom roms used
Pure Samsung roms
This was only done to remove bloatware
A lot of the G900F branded ROMs (such as EE) are now BNL9, and there doesn't appear to be an unbranded BTU for BNL9 that I can find on SamMobile -- is it therefore not possible to change CSC without tripping Knox now?
arghness said:
A lot of the G900F branded ROMs (such as EE) are now BNL9, and there doesn't appear to be an unbranded BTU for BNL9 that I can find on SamMobile -- is it therefore not possible to change CSC without tripping Knox now?
Click to expand...
Click to collapse
Knox will only trip if you use a Custom rom
if your on EE and on 4.4.2 install the first 5.0 rom from sammobile and follow the Kies above
if you have installed 5.0 from EE you can roll this back Using kies see bellow
Enter your phones model and serial number with out it plugged in it will then offer you what roms were installed pick the last 4.4.2 then follow the onscreen instructions
after its rolled back follow the above
I only no this works via 4.4.2 and going up to 5.0 that triggers kies to change the csc over
after you have done this putting the first 5.0 in Kies will even update the phone or you can via the wifi update
I have done six phones now and all is well and Samsung told me how to do this so no warranty other then the ee is void
make sure you use Sammobile only roms
"This was only done to remove bloatware"
nothing youve described removes bloatware, jus changes the bloatware on it, BTU still has chaton ant+ and loads of other crap, to debloat you do need root, but not to debrand, but then again we all knew that cause we read the firmware thread where this has been mentioned three times minimum
-PiLoT- said:
"This was only done to remove bloatware"
nothing youve described removes bloatware, jus changes the bloatware on it, BTU still has chaton ant+ and loads of other crap, to debloat you do need root, but not to debrand, but then again we all knew that cause we read the firmware thread where this has been mentioned three times minimum
Click to expand...
Click to collapse
Were not on about the Bloat manufactures put on, this is Debranding removing the pointless junk networks add that the user can not remove or dissable
most of what you have said can be disabled in Application manager
if the user chooses when there on BTU to root its alot safer on a BTU stock rom then a Network rom
eg on Vodafone if you remove the RCS program you will not be able to send a txt using the default messages apk as Vodafone has removed this
Rooting is not compulsary in debranding and if your simply doing this to sell on the phone then there is no need to, and should only be done if this is what you want to do
But my method is just the first step in getting a Clean phone ready to Root this prevents any issues in the rooting Proses
i have fixed many phone on Network roms that people have mad a mess off
Plus when it come to re selling a phone a unbranded fetches more money and if Knox has not been triggared then the warrenty still stands
Lte network selection
ok I have a question guys
I have a g900f but in the network selection there is no Lte or 4G selection, my phone was using Malaysian firmware ( I didn't check if it does have Lte network selection) and then I flashed XSG (united Arab Emirates) firmware, so If I flashed unbranded firmware like Poland or UK .......... can I get the Lte network selection or no ???!!!!
how I can get 4G with out root or custom rom
Northern.dj said:
Were not on about the Bloat manufactures put on, this is Debranding removing the pointless junk networks add that the user can not remove or dissable
most of what you have said can be disabled in Application manager
if the user chooses when there on BTU to root its alot safer on a BTU stock rom then a Network rom
eg on Vodafone if you remove the RCS program you will not be able to send a txt using the default messages apk as Vodafone has removed this
Rooting is not compulsary in debranding and if your simply doing this to sell on the phone then there is no need to, and should only be done if this is what you want to do
But my method is just the first step in getting a Clean phone ready to Root this prevents any issues in the rooting Proses
i have fixed many phone on Network roms that people have mad a mess off
Plus when it come to re selling a phone a unbranded fetches more money and if Knox has not been triggared then the warrenty still stands
Click to expand...
Click to collapse
TBH i never new rooting caused any issues, not for people of intelligance anyway. but anyway, in the EU knox doesnt void warranty
Not every one that come on here is flaunt with rooting, or knows how to
or even wants to
this is why they have there own section and stops the Noob bashing
after all we all started some were
My Method simply does what it says with our rooting :good:
It stops some apps that I use from running (banking, in particular). Other than that I'd definitely root for the better Tasker functionality it offers (my older phones used for various other things around the house are all rooted but I want banking on my primary device)
Rooting for some has its Good points
But its better on a vanilla rom which has all the nasty Network traps removed, so then its then only manufacture apps
Plus if there is any issues with a Root then the developer can take a look
also you get the firmware updates still, but you will need to do a Factory wipe to remove the root
For some just braking away from the chains of the Network is enough
in the UK Networks have no idea
arghness said:
It stops some apps that I use from running (banking, in particular). Other than that I'd definitely root for the better Tasker functionality it offers (my older phones used for various other things around the house are all rooted but I want banking on my primary device)
Click to expand...
Click to collapse
Got banking app working on rooted phone with rootCloak exposed module[emoji6]
Talex416 said:
Got banking app working on rooted phone with rootCloak exposed module[emoji6]
Click to expand...
Click to collapse
RootCloak doesn't work for my bank. RootCloak Plus did for 1 version, but an update to the banking app broke it again and it was never fixed.
The only way I got my banking app running on my S3 and S5 was using this method by HiddenRambler...
http://forum.xda-developers.com/showpost.php?p=49296437&postcount=8
May be of some help to someone who hasn't come across it or tried it yet.
Sent from my SM-G900F using XDA Free mobile app

Carrier Updates

Hello everyone. I did the root on my Galaxy S6 edge, and everything's been working great. The only thing I really use it for right now is so that I can run my app radio unchained reloaded app. Otherwise I haven't changed anything. Recently I've been getting carrier updates coming in that I have not been able to accept. They continue to fail. Is there a way I can update my phone yet still keep root? Or is there something else going on?
Chemdawg said:
Hello everyone. I did the root on my Galaxy S6 edge, and everything's been working great. The only thing I really use it for right now is so that I can run my app radio unchained reloaded app. Otherwise I haven't changed anything. Recently I've been getting carrier updates coming in that I have not been able to accept. They continue to fail. Is there a way I can update my phone yet still keep root? Or is there something else going on?
Click to expand...
Click to collapse
You can Odin back to stock (oc3), take update, then root using latest ping pong root. Or, flash a custom oe2 rom using flashfire, then use Odin to update firmware to OE2, such as is explained here: http://forum.xda-developers.com/showthread.php?p=61198002. Or use smart switch to update, which will remove root.
This question was asked a few days ago:
http://forum.xda-developers.com/showthread.php?p=61365924
Sent from my SM-G925V

Stop Updates?

I have BK Disabler. What should I disable to prevent updates coming to my phone. It's working great right now, & if it ain't broke, don't try to fix it! Also, bxActions is awesome, so I don't want to risk an update breaking it.
Thanks.
I just searched for update in system, saw 3 or more and disabled, all so disabled there services.
Sent from my SM-N950U using XDA-Developers Legacy app
block the 3 update services as well disable auto update under developer options?
Software Update - con.sec.android.soagent
System Update - com.samsung.sdm
System Update - com.samsung.sdm.sdmviewer
Like my screen name says: Thanks to XDA! You all are legit awesome.
Will this work
How can I disable the update right out of the box. As I require root.
Tinythejuggalo said:
How can I disable the update right out of the box. As I require root.
Click to expand...
Click to collapse
Pull your sim card and disable wifi then set up and root.
Right on thanks man. I’m about to buy a unlocked one from bestbuy. And won’t have a SIM card right away (as I’m going to get one from metro pcs) I just definitely wanted to stop the update. So I can root. A lot of the apps I run require root.
Tinythejuggalo said:
Right on thanks man. I’m about to buy a unlocked one from bestbuy. And won’t have a SIM card right away (as I’m going to get one from metro pcs) I just definitely wanted to stop the update. So I can root. A lot of the apps I run require root.
Click to expand...
Click to collapse
You can boot strait into download mode and if you are on BL1 or 2 you can proceed strait to root. When in download mode you can check you bootloader revision in the RP SWREV line. It will start with either B1, B2 or B3, those are your revision numbers. It's probably better to inspect the phone before you root it but this is what I did with a new Verizon one the other day. I have two unlocked and one Verizon here.
jellyhead said:
block the 3 update services as well disable auto update under developer options?
Software Update - con.sec.android.soagent
System Update - com.samsung.sdm
System Update - com.samsung.sdm.sdmviewer
Click to expand...
Click to collapse
Finally decided to stop risking updating and losing root. took more effort than i thought to find those apps, good thing tibu has a search option. Hope I didn't accidentally wreck my phone.

Need help stopping ota updates using a computer method.

Ok quick question just bought new note 8 unlocked snapdragon 835 model, i am on the factory load firmware, i have checked the box for not allowing updates to firmware or software whichever you call it, i dont want anything changed its perfect the way it was born! But this new security update had a notification saying it was ready to download, but i hit closed will it keep bothering me? Or download without my permission even though i checked the i do not want any stupid updates box? Its asked me twice in a month even though i have no update checked in developer options. Some have recommended bk package disabler, however i would prefer a free method and use my computer, is there another method? Thanks for the help.

How To Prevent Android 10?

It took me a long time but I have finally gotten things settled down and working adequately on my new 405QA with Android 9, root w/Magisk, etc. I read here <https://www.theandroidsoul.com/lg-v40-update/> and elsewhere there may be an Android 10 coming. While for some that may be great news, for me it isn't. I need to rest and recover from the migration from my old Samsung Note 3 with 4.4.2!
So the question is: how do I 100% avoid any new Android OS updates from being (a) downloaded and (b) installed? In developer options, I have turned OFF "automatic system updates". But I fear this is not enough.
On my old Samsung, rooted with SuperSu, this alone seemed to prevent OS updates. But somehow I wonder if using Magisk and all will make preventing updates a bit different. What is the best way to handle this?
Thanks!
So, what you have done already is enough. Also, for a number of carriers you only get OTA if you are with the original firmware so if you cross-flashed your phone to unlocked US kdz, it is unlikely you would get any OTA updates even if you didn't disable in developer options. Any further options, you'd need to be rooted (which you are), disable/freeze both 'Software Update' apps and 'Fota Update' app. Titanium Backup is the best to freeze these.
Android# said:
So, what you have done already is enough. Also, for a number of carriers you only get OTA if you are with the original firmware so if you cross-flashed your phone to unlocked US kdz, it is unlikely you would get any OTA updates even if you didn't disable in developer options. Any further options, you'd need to be rooted (which you are), disable/freeze both 'Software Update' apps and 'Fota Update' app. Titanium Backup is the best to freeze these.
Click to expand...
Click to collapse
Thanks. Have not cross-flashed but I have used Magisk debloat to deal with fota and software updater. I feel better/safer now. Cheers

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