So i have a rooted galaxy S4, it also has a flashed rom on it (its an s4 rom but was manually flashed due to a few problems)
So I was wondering, is there any way for me to unroot my phone, but also reset everything else (I mean the flashed rom etc back to normal..., and just have my S4 like I just bought it?)
Any help would be appreciated, thanks!
-Eddie
in order to reflash the original rom you had, you need to have some former-flash informations:
-Android version you had before the flash
-Country of origin of the rom (not really important but if you want it really as you had it from factory you need this information)
Now what you need to do is to activate usb debugging from parameters : (Plus -> about device -> tap 8 times on baseband version, it will tell you that developper mod is activated, back to menu, tap developper options, tick usb debugging)
You need to download Odin 3.07 or whatever (i advice you use this one.)
and download the firmware you exactly want from sammobile (Warning, choose the exact model device you have)
then you need to factory reset your phone (via recovery)
now shut down your phone, put it on download mod (down volume + home button + power button)
press up, open odin on your computer then plug your phone to the computer. wait until your phone is detected in odin (a blue com will appear on odin). if your phone is not recognized, install usb drivers (google it) and turn off kies.
now extract the firmware you downloaded from sammobile, you will have a .tar.md5 file, click on pda, (or ap if newer odin version), then choose the file (it will take a long time to charge, if you don't want to wait, you can rename the .tar.md5 file to just .tar)
Click start and wait until "pass!" appears on odin.
That is all.
Filous11 said:
in order to reflash the original rom you had, you need to have some former-flash informations:
-Android version you had before the flash
-Country of origin of the rom (not really important but if you want it really as you had it from factory you need this information)
Now what you need to do is to activate usb debugging from parameters : (Plus -> about device -> tap 8 times on baseband version, it will tell you that developper mod is activated, back to menu, tap developper options, tick usb debugging)
You need to download Odin 3.07 or whatever (i advice you use this one.)
and download the firmware you exactly want from sammobile (Warning, choose the exact model device you have)
then you need to factory reset your phone (via recovery)
now shut down your phone, put it on download mod (down volume + home button + power button)
press up, open odin on your computer then plug your phone to the computer. wait until your phone is detected in odin (a blue com will appear on odin). if your phone is not recognized, install usb drivers (google it) and turn off kies.
now extract the firmware you downloaded from sammobile, you will have a .tar.md5 file, click on pda, (or ap if newer odin version), then choose the file (it will take a long time to charge, if you don't want to wait, you can rename the .tar.md5 file to just .tar)
Click start and wait until "pass!" appears on odin.
That is all.
Click to expand...
Click to collapse
Downloaded the correct ROM of sammobile. Can't try at the moment in school right now!
But thanks for the great reply, I'll do it when I get home and let you know how it goes
Any method to unlock this phone without paying for it or having to wait 90 days yet?
This is what I tried with CG Pro Key
I read online that it is done with the same method as the SM-G550T1, so I am trying it on a SM-G550T2 this precise moment. I am not responsible for any problems that may arise with your phone if this does not work for you, I have tried it on several SM-G550T1 from Metro PCS and it has worked well.
1. Power on phone, go to apps>settings>about phone, then tap on Build number seven times to enable developer options, once message prompts about being a developer.
2. Go back to settings and look for the "developer options", go there and make sure "OEM Unlock" is selected, as well as "USB debugging".
3. Download the following three files, I tried posting the download links but since I hardly ever post upon forum policy I am not able to, if you need the files PM me.
3a. Odin 3.10.7 is the version I have used and has worked for me
3b. TWRP custom recovery, should be installed Using Odin. Put phone in Download Mode (Home+Power+Vol-) and connect to computer then open Odin.exe using right click and running as administrator. Once opened select the "AP" box and select the TWRP file, then click on start, once Odin finishes it will restart phone. Once this happens remove the battery, because I let it fully restart once even after Odin showed the PASS, and when I tried entering Recovery Mode it went into OEM Android recovery.
3c. SuperUser Root. Once the TWRP custom recovery has been installed save the SuperUser file in an SD card and insert it on the phone OR save it directly to your phone's internal storage, then put phone in Recovery Mode (Home+Power+Vol+). Once in recovery mode you will get a screen with a disclaimer, just "Swipe to Allow Modifications", then select "Install", then on the bottom "Select Storage" and go to wherever you saved your file and select it, then "Swipe to confirm Flash" and wait for phone to finish, then select Reboot option.
UP TO THIS POINT your phone has a custom recovery and SuperUser access, I have only unlocked these phones using GC Pro since its the method that has worked for me, but theoretically you could be able to test with z3x o octoplus, Processor is Exynos from what I have read on other forums it should work using models g920t o g925t, but I haven't tried that so I can't vouch for these to work. IF YOU PLAN TO DO SO, DO IT AT YOUR OWN RISK
4. Connect your GC pro Key or Box as well as your phone, and open GCPROGSMTOOLKIT. Once program starts go to Samsung tab, select any of the models, it does not make any difference, then under "Service" select "TMOBILE Unlock" and click on "Start", the phone will prompt for computer connection, then will ask for permission fomr SuperUser, Grant it then sit back and wait, the box will finish and restart phone:
Using Version...1.0.0.0047
Selected Model GT-I5503
Selected Task SAMSUNG T-MOBILE UNLOCK
Searching ADB device Please wait..
Device Detected...
model:= SM-G550T2
Androids Version:= 6.0.1
Description Version:= on5ltetmowal-user 6.0.1 MMB29K G550T2UVU2AQC4 release-keys
Platform:= exynos3 [ universal3475 ] [ SHANNON308 ]
Baseband:= G550T2UVU2AQC4
VER:= G550T2UVU2AQC4/G550T2TMB2AQC4/G550T2UVU2AQC4/G550T2UVU2AQC4
Carrier := TMB_USA
AP UART Status := Disable.
Security Patch := 01-03-2017
Network Mode := LTE
Simstatus:= ABSENT
ANDROID-ID = 920110f5341e24df_0000D5E046
SU Version..2.77:SUPERSU
Device is Secure Rooted..uid=0
System Permission is Read/Write...
SAMSUNG ALL T-MOBILE UNLOCKING STARTED...
Checking Data...
Waiting for Loader...
Loader Ok...
Direct Unlock Success...
!!! Success !!!!
Restart Phone Manually if not done auto...
Total Time Take...00:00:09
Log Saved
Afterwards insert a SIM card and enjoy your unlocked phone, I just did it as I typed all the process for you on a Wal Mart family mobile SM-G550T2 and it worked no problem, hope this is helpful to you
Hello, there. This is my second guide, so please forgive me if it looks a bit weird. But without further ado I present you with my Official [Snapdragon] Guide for Flashing Standard Firmware, Carrier Switching, and Flashing Unlocked Firmware for the S8+.[/SIZE]
Here are some useful reminders:
All download links are at the bottom of this post.
Make sure you follow the "Prerequisites For Anything You decide To Do In This Guide" section.
Don't copy quotation marks, unless I tell you to in this guide.
You will need a Windows computer in order to utilize the software provided. Mac users can use Boot Camp to dual boot their machines. Using WINE is not recommended.
This is an S8+ guide, not an S8 guide. Go to https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817 to check out my S8 guide.
WARNING: Anything you do in this guide will erase your phone completely. It's recommended that you back up before you do anything and that you remove your Google account from your phone (so you don't have to go through FRP).
Note: Flashing to stock from Unlocked firmware requires you to follow the "Carrier Switching" section (which eventually requires you to follow the "Flashing Standard Firmware" section) and do as it says, unless the CSC code of your carrier is currently active. You can check this by going into Recovery Mode by holding the Power button, Bixby button, and Volume Up button until you see a dark blue screen with text saying that the firmware is being updated (it's not actually). Once it transitions to a black screen, your active CSC will be on the bottom log (three characters). If your CSC code is already your carrier's, then just follow the "Flashing Standard Firmware section. But for anything you decide to do, you must follow the "Prerequisites for anything you decide to do in this guide" section.
Disclaimer:
I am NOT responsible for any damage done to your device if you decide to use this guide.
Prerequisites for anything you decide to do in this guide (Required):
Standard Odin
Samsung Drivers
Steps:
1) Uninstall Samsung Switch and/or Samsung Kies, if present on your computer. This helps removes any conflicts with Odin.
2) Extract the Samsung Driver zip and the Odin zip to somewhere safe on your computer.
3) Double click on the extracted "SAMSUNG_USB_Driver_for_Mobile_Phones" executable (SAMSUNG_USB_Driver_for_Mobile_Phones.exe).
3) Navigate to your extracted Odin folder and double click on the Odin configuration file (Odin3.ini).
4) You should have entered Notepad (or your preferred note editor). Find the "[ButtonOption]" section.
5) There should be a setting there called "UMS/PATCH". Change the value of "0" to "1" so it becomes "UMS/PATCH=1".
6) Press the "Ctrl" key and "S" key on your keyboard to save the file.
7) Go ahead and close out of Notepad.
All About Bootloaders (Required Reading):
As Wikipedia puts it, “A boot loader is a computer program that loads an operating system or some other system software for the computer after completion of the power-on self-tests.” In other words, a bootloader is what loads you operating system. In most Samsung phones (including the S8 and S8+), there’s an e-fuse that prevents downgrading of the bootloader. This means any firmware or firmware update containing a lower Bootloader version than the one you have, will FAIL to be applied. There is really no way to circumvent this.
(From what I can tell) S8+ firmware released since December are Bootloader v2, while anything before that month is Bootloader v1. In the next section, I’ll be explaining how to properly identify your current Bootloader version.
How to identify Bootloader version (Important):
Steps:
1) Open “Settings” on your phone.
2) Scroll down to “About Phone”.
3a) If you are on a standard, carrier firmware, under “Baseband version” you should see something similar to this: “G955UXXXXXXXX”.
3b) If you are on an unlocked firmware, under “Baseband version” you should see something similar to this: “G955U1XXXXXXXX”.
4) No matter which firmware you're on, the fourth “X” would be either a “1” or a “2”, which means you will have either Bootloader version 1 or Bootloader version 2, respectively.
Note: As stated in the last section attempting to flash firmware that contains Bootloader v1 onto a phone that already has Bootloader v2, will fail. You can update a phone on Bootloader v1 to a firmware that has Bootloader v2, however.
How To Download Firmware with Updato:
Note: This is an add-on section for any part of the guide that requires you to download specific firmware.
Updato can download old or new firmware for phones, therefore you can download Bootloader v1 or Bootloader v2 firmware. However, Updato tends to be much slower than SamFirm, therefore its recommended that you use SamFirm if you’re willing to download Bootloader v2 firmware. You should only use Updato if you need to download Bootloader v1 firmware.
Steps:
1) Go to http://fw.updato.com
2) Type in your Model Number (SM-G955U for carrier S8+’s; Firmware for unlocked S8+’s can be found in the “Downloads” section)
3) Find firmware for your specific region.
Here are some common Region codes:
BST Boost
VZW Verizon
ATT ATT
USC US Cellular
ACG C Spire
TMK MetroPCS
VMU Virgin Mobile
TFN Tracfone
XAS Sprint
TMB T-Mobile
XAA Unlocked US
SPR Sprint
CCT Xfinity Mobile
AIO Cricket
4) Download it somewhere safe onto your computer.
How To Download Firmware with SamFirm (Faster):
Note: This is an add-on section for any part of the guide that requires you to download specific firmware.
SamFirm can only download the latest firmware for phones, therefore you’ll be downloading a Bootloader v2 firmware (which means once you flash it, there's no going back to Bootloader v1 if your phone is currently on that version). SamFirm tends to be much faster than Updato for downloading firmware, since the firmware is downloaded directly from Samsung.
Prerequisites:
SamFirm (SamFirm_v0.3.6.zip):https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
Steps:
1) Download “SamFirm_v0.3.6.zip”. Make sure you’ve installed all of its prerequisites listed on the page, such as “.NET Framework 3.5”, “Microsoft Visual C++ 2008 Redistributable Package (x86)”, and “Microsoft Visual C++ 2010 Redistributable Package (x86)”
2) Extract “SamFirm_v0.3.6.zip” somewhere safe onto your computer.
3) Double-click on “SamFirm.exe” to open it.
4) Enter your Model Number and 3-character Region code.
Here are some common Region codes:
BST Boost
VZW Verizon
ATT ATT
USC US Cellular
ACG C Spire
TMK MetroPCS
VMU Virgin Mobile
TFN Tracfone
XAS Sprint
TMB T-Mobile
XAA Unlocked US
SPR Sprint
CCT Xfinity Mobile
AIO Cricket
5) Make sure you’ve ticked the “Manual” checkbox.
6) Input your “PDA”, “CSC”, and “Phone” strings into their respective slots based off the information found from fw.updato.com for your latest specific firmware. Please note that the “CSC” slot is not the same as the same as the “Region” slot; the “CSC” slot should have a long string inputted.
7) Tick the “Binary Nature” checkbox.
8) Click the “Check Update” box.
9) Your firmware should now appear. Make sure the “Check CRC32” and “Decrypt Automatically” checkboxes are ticked.
10) Click on the “Download” box, choose where you want to store the firmware, and relax for a while.
Flashing Standard Firmware:
Prerequisites:
What's listed in the "Prerequisites For Anything You Decide To Do In This Guide" section.
Firmware you want to flash; follow the “How To Download Firmware with SamFirm” or “How To Download Firmware with Updato” section, if you need firmware.
Steps:
1) Extract your downloaded firmware to somewhere safe on your computer.
2) Turn off your S8+.
3) Once off, hold the Power button, Volume Down button, and the Bixby button until you see a blue screen on your phone.
4) Press the Volume Up key to enter Download Mode.
5) On your computer, navigate to your extracted Odin folder.
6) Double click on the "Odin3 v3.12.7" executable (Odin3 v3.12.7.exe)
7) Connect your phone to your computer with your USB cable.
8) You should see Odin output "Added!!" in the "Log" tab and underneath the "ID:COM" section, you should see an empty box turn blue.
9) Now it's time to add your firmware files that were extracted earlier. Individually add an appropriate firmware file for each box on the right. The "BL" box will require a firmware file that starts with "BL", the "AP" box will require a firmware file that starts with "AP", the "CP" box will require a firmware file that starts with "CP", the "CSC" box will require a firmware file that starts with "CSC" (DO NOT USE THE "HOME_CSC" file for the "CSC" box), the "UMS" box will require a firmware file that starts with "USERDATA". The "AP" and "USERDATA" files will take the longest for Odin to load because of their size.
10) Go to the "Options" tab and make sure that only the "Auto Reboot" and "F. Reset Time" checkboxes are ticked.
11) Go back to the "Log" tab.
12) Click the "Start" button on bottom right.
13) Sit back and relax for a while. Odin will output what is being flashed in the "Log" and on a box in the top left.
14) The box in the top left will become green and in black letters say "PASS" once the flash was successful.
15) Once the flash finished, disconnect your phone from your computer.
16) Your phone will do an erase at this point, so don't mess with your phone until you reach the setup screen.
17) PROFIT. Follow the setup on your phone and you're good to go.
Carrier Switching:
NOTE: Doing this process does NOT unlock your phone for use on other carriers.
Prerequisites:
What's listed in the "Prerequisites for anything you decide to do in this guide" section.
S8+ Factory Binary (either Bootloader v1 or Bootloader v2)
Prince Comsy version of Odin
Google Platform-Tools (ADB)
Canadian HOME_CSC (either Bootloader v1 or Bootloader v2)
Steps:
1) Extract the downloaded S8+ Factory Binary, the Prince Comsy version of Odin, Platform-Tools, and the Canadian firmware, to somewhere safe on your computer.
2) Turn off your S8+.
3) Once off, hold the Power button, Volume Down button, and the Bixby button until you see a blue screen on your phone.
4) Press the Volume Up key to enter Download Mode.
5) Navigate to the extracted Odin (NOT PRINCE COMSY) folder.
6) Double click on the "Odin3 v3.12.7" executable (Odin3 v3.12.7.exe).
7) Connect your phone to your computer with your USB cable.
8) You should see Odin output "Added!!" in the "Log" tab and underneath the "ID:COM" section, you should see an empty box turn blue.
9) Click on the "AP" box and navigate to the extracted Factory Binary folder. Double click on the file the starts with "COMBINATION".
10) Wait for Odin to load the file.
11) Go to the "Options" tab and make sure that only "Auto Reboot" and "F. Reset Time" checkboxes are ticked.
12) Go back to the "Log" tab.
13) Click the "Start" button on bottom right.
14) Odin will output what is being flashed in the "Log" and on a box in the top left.
15) The box in the top left will become green and in black letters say "PASS" once the flash was successful.
16) Leave your phone connected and let your it reboot into the 'factory binary homescreen' (Basically, the equivalent of a home screen on a regular S8+).
17) Navigate to the "platform-tools-latest-windows" folder. Once you’ve navigated to where “adb.exe” is located, click the address bar on the top and press “Ctr+C”.
18) Open cmd.exe through “Run” (Windows key + R)
19) Type in “cd /d “<copied folder location>”” (Make sure you’re putting the folder location in quotes and not the command itself)
20) Type in "adb reboot bootloader". Leave ADB open.
21) Your phone will reboot into Download Mode. Your device should still be connected and ADB should also still be open.
22) Navigate to the Prince Comsy version of Odin and double click on the "Odin PrinceComsy" executable (Odin PrinceComsy.exe).
23) You should see the Prince Comsy version of Odin output "Added!!" in the "Log" tab and underneath the "ID:COM" section, you should see an empty box turn blue.
24) Click the "CSC" box and navigate to the “HOME_CSC” file you downloaded.
25) Double click on the file that starts with "HOME_CSC" (DO NOT USE the "CSC" file for the "CSC" box). It should load quickly.
26) Go to the "Options" tab and make sure that only "Auto Reboot" and "F. Reset Time" are ticked.
27) Go back to the "Log" tab.
28) Click the "Start" button on bottom right.
29) Odin will output what is being flashed in the "Log" and on a box in the top left.
30) The box in the top left will become green and in black letters say "PASS" once the flash was successful.
31) Once your phone reboots, you will see an "IME" button on the 'factory binary homescreen (It’s on the bottom). Tap on it.
32) A number pad should appear. Type in "*#243203855#".
33) A menu will pop up. Scroll down until you find an "XAC" option. Tap on it and tap "Install".
34) Your phone will reboot. Once it reaches the 'factory binary homescreen', go to ADB on your computer and type in "adb shell".
35) *LOOK A TINY BIT BELOW!* Type in "echo "XXX" > /efs/imei/mps_code.dat" (the quotation marks that surround the X's are used, but not the ones that surround the whole command... you know that by now- right?) and REPLACE XXX with your preferred CSC code.
Choose one of these CSC codes:
BST Boost
VZW Verizon
ATT ATT
USC US Cellular
ACG C Spire
TMK MetroPCS
VMU Virgin Mobile
TFN Tracfone
XAS Sprint
TMB T-Mobile
XAA Unlocked US
SPR Sprint
CCT Xfinity Mobile
AIO Cricket
36) Type in "exit" in the ADB shell.
37) Type in "adb reboot bootloader" and flash your desired firmware by following the "Flashing Standard Firmware" section of this guide or by following the "Flashing Unlocked Firmware" section of this guide. PROFIT FOR NOW.
Flashing Unlocked Firmware:
NOTE: The unlocked firmware does NOT unlock your phone for use on other carriers, it only removes bloatware. Some carrier specific features, such as Wi-Fi Calling and VOLTE will not work with the Unlocked Firmware.
Prerequisites: What's listed in the "Prerequisites for anything you decide to do in this guide" section
Prince Comsy version of Odin
Unlocked Firmware (either Bootloader v1 or Bootloader v2)
Steps:
1) Extract the Prince Comsy version of Odin and the Unlocked Firmware you downloaded from below.
2) Turn off your S8+.
3) Once off, hold the Power button, Volume Down button, and the Bixby button until you see a blue screen on your phone.
4) Press the Volume Up key to enter Download Mode.
5) On your PC, navigate to your extracted Prince Comsy Odin folder.
6) Double click on the "Odin PrinceComsy" executable (Odin PrinceComsy.exe).
7) Connect your phone to your PC with your USB cable.
8) You should see PrinceComsy's Odin output "Added!!" in the "Log" tab and underneath the "ID:COM" section, you should see an empty box turn blue.
9) Now it's time to add your firmware files that were extracted earlier. Individually add an appropriate firmware file for each box on the right. The "BL" box will require a firmware file that starts with "BL", the "AP" box will require a firmware file that starts with "AP", the "CP" box will require a firmware file that starts with "CP", and the "CSC" box will require a firmware file that starts with "CSC" (DO NOT USE THE "HOME_CSC" file for the "CSC" box).
10) Go to the "Options" tab and make sure that only the "Auto Reboot" and "F. Reset Time" checkboxes are ticked.
11) Go back to the "Log" tab.
12) Click the "Start" button on bottom right.
13) Sit back and relax for a while. Odin will output what is being flashed in the "Log" and on a box in the top left.
14) The box in the top left will become green and in black letters say "PASS" once the flash was successful.
15) Once the flash finished, disconnect your phone from your computer.
16) Your phone will do an erase at this point, so don't mess with your phone until you reach the setup screen.
17) Continue with the setup on your phone and enjoy!
A HUGE thanks goes to @STF_TimelessGoD @mweinbach @MJHawaii and @juvemex for their original guides that I based this guide around.
DOWNLOADS:
Standard Odin: https://forum.xda-developers.com/showpost.php?p=75703449&postcount=276
Prince Comsy's Odin: https://www.androidfilehost.com/?fid=24591023225177749
Samsung Drivers: http://developer.samsung.com/galaxy/others/android-usb-driver-for-windows
Canadian HOME_CSC (Bootloader v1): https://androidfilehost.com/?fid=817906626617958535
Canadian HOME_CSC (Bootloader v2): https://androidfilehost.com/?fid=746010030569947264
Factory Binary (Bootloader v1): https://androidfilehost.com/?fid=745425885120731328
Factory Binary (Bootloader v2): https://androidfilehost.com/?fid=673791459329065785 Thank you, @BlueFox721 for letting me provide this.
Google Platform-Tools (ADB):https://dl.google.com/android/repository/platform-tools-latest-windows.zip
Unlocked Firmware (Bootloader v1): (Will be uploaded shortly)
Unlocked Firmware (Bootloader v2): Use SamFirm.
AT&T S8+ Firmware (Bootloader v1): https://androidfilehost.com/?fid=746010030569947263
AT&T S8+ Firmware (Bootloader v2): Missing (Not even available by using SamFirm due to tight AT&T security)
you should do a pro and con section.
I have seen a few threads regarding this matter, but what are the benefits of this, and why would anyone want to switch.
leyvatron said:
you should do a pro and con section.
I have seen a few threads regarding this matter, but what are the benefits of this, and why would anyone want to switch.
Click to expand...
Click to collapse
You're talking about carrier switching, flashing unlocked firmware, or both? I'll take your idea into consideration for both of my guides.
Mike15678 said:
You're talking about carrier switching, flashing unlocked firmware, or both?
Click to expand...
Click to collapse
I guess what I am trying to say is, a brief explanation to both would be a good addition to the thread.
Pros and Cons.
Why would I want to odin an unlocked FW oppose to keeping my Verizon FW besides removing a few bloat?
leyvatron said:
I guess what I am trying to say is, a brief explanation to both would be a good addition to the thread.
Pros and Cons.
Why would I want to odin an unlocked FW oppose to keeping my Verizon FW besides removing a few bloat?
Click to expand...
Click to collapse
Ok, I will shout you out (if that's fine with you) and give some pros and cons on both guides regarding carrier switching and flashing unlocked firmware, by tomorrow. Thanks for your suggestion!
Mike15678 said:
Ok, I will shout you out (if that's fine with you) and give some pros and cons on both guides regarding carrier switching and flashing unlocked firmware, by tomorrow. Thanks for your suggestion!
Click to expand...
Click to collapse
Truthfully, I don't need a shout out or anything. I just know noobs are ready to flash anything and everything with the word unlocked without knowing what it is or what it does.
Pros and cons would be a good addition but will require more research time and feedback from people who are using the unlocked FW.
leyvatron said:
Truthfully, I don't need a shout out or anything. I just know noobs are ready to flash anything and everything with the word unlocked without knowing what it is or what it does.
Pros and cons would be a good addition but will require more research time and feedback from people who are using the unlocked FW.
Click to expand...
Click to collapse
I'll still shout you out (at the top of my guide)... I do have an S8, and can tell you that VOLTE and Wi-Fi Calling are not in the settings with the Verizon firmware or with the unlocked firmware by itself (meaning that the SIM card was removed and the CSC was set to "XAA"). Therefore, that has led me to believe that Samsung themselves, have not implemented any carrier exclusive features, such as the ones stated above. I also collected some input from the users at the S8 guide, and they report the same things.
Oh, I want to point out that there IS a stock AT&T firmware for the S8+.
On the S8, there isn't.
(Just updated the guide)
i follow every step and i get to where i type in att for the carrier change and nothing is happening in adb
blane3298 said:
i follow every step and i get to where i type in att for the carrier change and nothing is happening in adb
Click to expand...
Click to collapse
That's normal; you get no response from ADB, but your change has occured.
Mike15678 said:
That's normal; you get no response from ADV, but your change has occured.
Click to expand...
Click to collapse
its still showing vzw when i check it tho
blane3298 said:
its still showing vzw when i check it tho
Click to expand...
Click to collapse
In Recovery Mode?
Mike15678 said:
In Recovery Mode?
Click to expand...
Click to collapse
yes
blane3298 said:
yes
Click to expand...
Click to collapse
You first changed the CSC to "XAC" in the factory binary, correct?
Mike15678 said:
You first changed the CSC to "XAC" in the factory binary, correct?
Click to expand...
Click to collapse
yes
---------- Post added at 03:48 PM ---------- Previous post was at 03:46 PM ----------
going to run thru the steps again and see if i did anything wrong
blane3298 said:
yes
---------- Post added at 03:48 PM ---------- Previous post was at 03:46 PM ----------
going to run thru the steps again and see if i did anything wrong
Click to expand...
Click to collapse
Ok.
Thanks, would like to know if this will work with an 955U trying to get AT&T wifi calling/volte to work by going to ATT firmware?
AxlxA said:
Thanks, would like to know if this will work with an 955U trying to get AT&T wifi calling/volte to work by going to ATT firmware?
Click to expand...
Click to collapse
Yes it would. Are you on the unlocked firmware or standard firmware?
Mike15678 said:
Yes it would. Are you on the unlocked firmware or standard firmware?
Click to expand...
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The Unlocked firmware. It's a samsung.com Galaxy S8+ purchased as an unlocked device. What do you mean by standard firmware? like with the carriers?
AxlxA said:
The Unlocked firmware. It's a samsung.com Galaxy S8+ purchased as an unlocked device. What do you mean by standard firmware? like with the carriers?
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Yes, that's what I mean by standard firmware (sorry, if I confused you). Your CSC code is already set to "ATT", correct? If not, follow the "Carrier Switching" section and then the "Flashing Standard Firmware" section. If your CSC code is alrready set to "ATT", then just proceed with the "Flashing Standard Firmware" section.
My wife and I have ATT S8's which were updated OTA to PIE a couple of months ago and since then, we have been fighting with high battery drain. I've done several full complete wipes and even replaced the 1.5yr old original battery on my phone thinking it was bad, yet still, both phones drain with little to no use. By late afternoon, the battery is down to the teens.
I'm 100% convinced it's PIE, based on other complaints of battery drain since their S8's were updated to PIE.
So I want to downgrade back to a factory ATT OREO firmware. Both phones are currently on PIE version G950USQSDSE5. Can I safely downgrade to an official ATT OREO firmeware, ie. G950USQS5CRL1 or G950USQS3CRE2 using ODIN without the risk of bricking?
If so, what is the correct ODIN process to follow? I've read different instructions.
One of them reads:
1. Download and extract a zip file containing your desired firmware.
2. Open Odin Tool.
3. Boot your device in the "Download Mode": Press Volume Down, Power and Home buttons at same time for 5-8 seconds until download mode is active.
4. Connect your device to PC via the USB cable while in download mode.
5. Next, check the "Auto Reboot" and "F. Reset Time" options in Odin Tool.
6. Hit the AP/PDA button then browse and select a tar.md5 file from the extracted folder.
7. Finally press the start button to begin flashing the firmware update on your device.
Another guide states:
Extract the firmware file you just downloaded. You should get 5 files:
AP (System &Recovery)
BL (Bootloader)
CP (Modem / Radio)
CSC_*** (Country / Region / Operator)
HOME_CSC_*** (Country / Region / Operator)
Add each file to it's respective field in Odin v3.13.3. Use CSC_*** if you want to do a clean flash or HOME_CSC_*** if you want to keep your apps and data.
Reboot your phone in Download / Odin mode (make sure your device is off) with the following button combo: POWER + VOLUME DOWN + BIXBY
Once in download mode, connect your phone to the PC, preferably using the original USB cable you got with your phone. Odin should detect your device and a BLUE box will show up with the COM port number. (Be sure, the SAMSUNG-drivers are installed on your PC!)
Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.
Click the start button, wait for Odin to say 'PASS' in a GREEN box. Once the flash is complete, your phone will reboot, and you can disconnect your phone from the PC.
Any help to get us back to OREO is greatly appreciated!
I was able to successfully downgrade, but even with disabling software and security updates, PIE forced it's way back onto my phone after a week or so. I need to find a way to block updates so I can go back to Oreo and stay on it.
Hey, I have the same phone and I am having an issue finding the correct firmware for it. Can you give me a link to the firmware you downgraded to that worked? I just flashed it with ODIN, but the firmware I used caused it to get stuck in a bootloop on the ATT screen and it wont turn on. Thanks!
I need to do this to my S8 Active. It finally went to Pie a few days ago and I cannot stand it.