S7 Slow Last Month or Two, How to Downgrade Software? - Samsung Galaxy S7 Questions and Answers

Hi,
I have a Verizon Galaxy S7. Ever since they pushed out an update in the last month or two (can't remember when), the phone has been unbearably slow. It was perfect before and now it's difficult to load Google Maps, the camera app, to send texts, etc.
Is there a way to downgrade the software to what it was a month or so ago? I've never done anything like this before and would appreciate any direction you could provide, like what software image to download for the phone. From what I'm reading I use an Odin app to apply it?
Here's my phone's specs:
- Model number: SM-G930V
- Current Software: G930VVRS8CRK1 (Nov 24th)
- Previous Software: G930VVRU8CRJ3 (Nov 9th) <-- I think this update might be when it slowed down.
Thank you for your help!

For USA model S7's downgrades are restricted. An Odin flash can help, but for best results it means doing a clean wipe. If you choose to flash and keep data, it may not solve your issue
Flash guide https://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin
For a clean flash that wipes data you put in the 4 slots as labelled BL, AP, CP, CSC
For keeping data you use BL, AP, CP, Home_CSC
The guide mentions an older version of Odin, you'll want to make sure you get the latest one.

Thanks man! So should I try to flash it to keep the data first, and then if that doesn't work, wipe the whole thing out?

Please let us know how this goes as I have a s7 on early nov pallversion and I wish to upgrade to latest one

Related

No updates since June 2016 after rooting and tripping KNOX

Hey guys, I have the g930FD version and stuck with the June update after I have rooted. I have reflashed the orignal rom still to no effect. I have used ODIN, Kies and Smart switch for restoring to the original firmware. I have restored to factory defaults and still stuck in the old update. Can you help me?
As per the usual, I take no responsibility for anyone who reads this and does it wrong and bricks their phone. This is just what works for me.
At this point, you can probably download any pushed updates, but they won't install. What you can do is get the latest firmware for your phone at sammobile and install it via Odin. A useful walkthrough (albeit an older one) can be found at http://forums.androidcentral.com/am...ide-samsung-how-flash-stock-rom-via-odin.html . Here's one that might be more recent, so read both: http://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin .
You will need to make sure you get the proper firmware for your particular country, so it will work with your provider. As an example, I have a 930f which originally had the TTT firmware (Trinidad/Tobago) so I would need to download the TTT firmware.* You should keep in mind that when you flash the .TAR.MD5 file with Odin, you will completely over-write your phone, so back up EVERYTHING. I even remove my SD card just in case.
*As I live in the USA, I can't flash the .TAR.MD5 file as it comes to me. I have to unzip it with 7zip, and then flash only some of the files. If you also have a European phone with an unlocked bootloader, you will need to haunt the Questions and Guides for advice on which files you should flash. This is because one of the files has to do with the radio/modem/setttings of that country, and if it doesn't match your country, your phone won't work with your provider anymore. The CSC maybe? Can anyone remind me?

[STOCK][LATEST] OFFICIAL SM-G935U's G935UUEU4APL4 Firmware for the T-Mobile Variant

Hi there XDA,
First of all, I don't claim to be a developer nor I am here to plagiarize/steal/uncredit those developers and providers.
Therefore, this post is to provide you with the latest UNLOCKED SM-G935U Stock Firmware for
users running the T-MOBILE variant (SM-G935T)
There were many comments on threads as to when the firmware would update, and finally is here!
Note: I DO NOT TAKE CREDIT FOR THIS, I DID NOT CREATE THIS OR STOLE FROM ANYBODY. THE INFORMATION PROVIDED LINKS DIRECTLY TO SAMSUNG's OFFICIAL FIRMWARE WEBSITE "SAMMOBILE".
Note to the Community: This latest version is confirmed to have ISSUES with ROOT. After successful root and/or XPOSED, Wi-Fi connection, overall lag, and heating issues are present. So it is up to you if you decide to root or not.
Note to Admin/Moderators: IF YOU FEEL THIS THREAD IS NOT APPROPIATE OR IF YOU WANT TO ELIMINATE THIS THREAD, FEEL FREE TO DO IT. My intention is just to provide the community with this update for the SM-G935U (T-MOBILE) Firmware as quick as possible for those in need and for those pioneering fellas.
As soon as I am done setting up, I will surely provide you with any insight/features added to this update.
Happy developing...
RECENT UPDATES ON ROOT PERFORMANCE/STABILITY [Jan.30.2017]: This 4APL4 Variant INDEED works with the root method by @Mastajeff, I can't find any issues at all. I personally believe that this Firmware version without root works even better for whatever your needs.
*** BASED ON PERSONAL USE AND RECENT DOWNGRADE TO STOCK G935U###4API3, I ENDED UP HAVING BETTER PERFORMANCE, BATTERY LIFE, AND STABILITY WITHOUT ROOT. I JUST WENT ON TO DISABLE COUPLE SYSTEM APPS WITH EZ DISABLER. I NOTICED BETTER RESULTS, PERFORMANCE, AND STABILITY USING ROOT ON THE PREVIOUS #4API3 FIRMWARE VERSION. (THIS IS JUST MY OPINION BASED ON RECENT UPDATE I DID, BUT IT IS ALWAYS YOUR CHOICE TO WORK ON)
Official SM-G935U (T-Mobile) Variant "G935UUEU4APL4"
Model SM-G935U
Country USA (T-Mobile)
Version Android 6.0.1
Changelist 9978521
Build date Fri, 09 Dec 2016 14:00:30 +0000
Security Patch Level 2016-12-01
Product code TMB
PDA G935UUEU4APL4
CSC G935UOYM4APL4
Official SamMobile SM-G935U TMB Firmware website: http://www.sammobile.com/firmwares/download/118886/G935UUEU4APL4_G935UOYM4APL4_TMB/
What is the difference with features of this G935UUEU4APL4 Frimware and G935TUVU4APK1
Thanks purotijuana for the post - Great Catch!
Have you personally flashed this version?
What is the difference with features of this G935UUEU4APL4 Frimware and G935TUVU4APK1?
I am on previous U firmware API3. Is there a way to upgrade to this without losing data?
Thanks,
Hello my friend, of course you can upgrade without losing data.
But I have a quick note for you, if you have a micro sd card will make everything better.
But if you don't, just upgrade using latest Odin version v3.12 by flashing THE BL, AP, CP......AND MOST IMPORTANT THE CSC FILE....Don't flash the HOME_CSC. You won't lose anything at all my friend.
Hello my friend, of course you can upgrade without losing data.
But I have a quick note for you, if you have a micro sd card will make everything better.
But if you don't, just upgrade using latest Odin version v3.12 by flashing THE BL, AP, CP......AND MOST IMPORTANT THE CSC FILE....Don't flash the HOME_CSC. You won't lose anything at all my friend.
Can anyone who's flashed this confirm if the modem works with band 12, or if we still need to use the TMO apk3 modem?
DOMF said:
Can anyone who's flashed this confirm if the modem works with band 12, or if we still need to use the TMO apk3 modem?
Click to expand...
Click to collapse
As a matter of fact, T-Mobile's SM-G935T also released an APL4 Firmware update.
So we are better off flashing the latest CP File from SM-G935T into the G935U APL4 Firmware.
*will provide links to all downloads*
serendipityguy said:
Thanks purotijuana for the post - Great Catch!
Have you personally flashed this version?
What is the difference with features of this G935UUEU4APL4 Firmware and G935TUVU4APK1?
Click to expand...
Click to collapse
Hello there pal,
I've sucessfully flashed this update and the VERY FIRST THING I NOTICED is a SMOOTHER UI. During the setup I noticed an increase in speed and touch response.
Samsung Pay comes in by default and it can't be disabled by default. Other than that, the ONLY down I noticed....AND I MIGHT BE WRONG GUYS BUT....I am actually surprised to notice significant battery drain
Have you personally went on to flash this update??
APL4
purotijuana said:
Hello there pal,
I've sucessfully flashed this update and the VERY FIRST THING I NOTICED is a SMOOTHER UI. During the setup I noticed an increase in speed and touch response.
Samsung Pay comes in by default and it can't be disabled by default. Other than that, the ONLY down I noticed....AND I MIGHT BE WRONG GUYS BUT....I am actually surprised to notice significant battery drain
Have you personally went on to flash this update??
Click to expand...
Click to collapse
Has anyone else noticed big battery drain?
Jimmy4485 said:
Has anyone else noticed big battery drain?
Click to expand...
Click to collapse
Yes Jimmy, there is huge battery drain in this new update!
AndroidFileHost for faster download:
http://www.androidfilehost.com/?fid=385035244224411333
krishelnino said:
I am on previous U firmware API3. Is there a way to upgrade to this without losing data?
Thanks,
Click to expand...
Click to collapse
I was on API3 I went to setting and clicked on system update and it updated to APL4. If you are using G935T CP modem you might to flash the API3 modem in CP to get the update. and you should not loose any data.
purotijuana said:
Hello my friend, of course you can upgrade without losing data.
But I have a quick note for you, if you have a micro sd card will make everything better.
But if you don't, just upgrade using latest Odin version v3.12 by flashing THE BL, AP, CP......AND MOST IMPORTANT THE CSC FILE....Don't flash the HOME_CSC. You won't lose anything at all my friend.
Click to expand...
Click to collapse
i did exactly u said. and i didnt install home csc but i lost everything. how come it happened
quarkw said:
i did exactly u said. and i didnt install home csc but i lost everything. how come it happened
Click to expand...
Click to collapse
Perhaps quarkw something was not or was checked that caused the pit to partition your puppy with Odin. When you flash via Odin from one one rom to another there is always a chance of losing data.
Once you wipe cache in the recovery step (if you did this step) there were some other options that may have wipe the phone or your MicroSD card.
The files may actually be present and you may have lost root, if you had it. There are so many variables that could have happened.
It sucks to loose data, it does.
But look at it as a learning experience and make the time to perform the following steps next time.
If I were you, get root then get TI backup over at google play (get the paid version) to backup everything to your MicroSD that way you can always flash without losing data.
TIP: save your present contacts with their phone numbers, email address & address to Google Contacts, so whenever you flash and format, your contacts will be there automatically with you once you sign into your Google Account.
Perhaps I may write a tutorial on how to flash / backup rom & data APKs and such. It took me a while to learn the ropes too.
I'm pretty sure you flash the HOME CSC file if you DON'T want to lose all your data, thats what I've read else where here on xda
Quickvic30 said:
I'm pretty sure you flash the HOME CSC file if you DON'T want to lose all your data, thats what I've read else where here on xda
Click to expand...
Click to collapse
That's what I've read as well. CSC=wipes data Home_CSC=keeps data
A couple of things
newuser1984 said:
I was on API3 I went to setting and clicked on system update and it updated to APL4. If you are using G935T CP modem you might to flash the API3 modem in CP to get the update. and you should not loose any data.
Click to expand...
Click to collapse
Yes if you were using the G935T CP modem you do have to flash the API3 modem in the CP section of Odin to get the OTA update for APL4. I didn't lose any data doing this.
Also I could have sworn I could still use Wifi Calling on the API3 firmware. But I definitely can't on APL4. Can anyone confirm if you do have wifi calling with the API3 firmware with the US unlocked modem or API3 firmware with the T-Mobile APK1 CP modem?
NayrStrebor said:
Yes if you were using the G935T CP modem you do have to flash the API3 modem in the CP section of Odin to get the OTA update for APL4. I didn't lose any data doing this.
Also I could have sworn I could still use Wifi Calling on the API3 firmware. But I definitely can't on APL4. Can anyone confirm if you do have wifi calling with the API3 firmware with the US unlocked modem or API3 firmware with the T-Mobile APK1 CP modem?
Click to expand...
Click to collapse
I am on APL4 and wifi calling is working. I am using APK1 modem, it also worked on API3
newuser1984 said:
I am on APL4 and wifi calling is working. I am using APK1 modem, it also worked on API3
Click to expand...
Click to collapse
Where is wifi calling located in the settings?
Is there a battery drain?

Upgrading 6.0.1 to 7.0.1 with Odin - Question

Hi guys,
just bought a new Samsung Galaxy S7 (SM-G930F).
Of course I got it with the Android 6.0.1 but I want to upgrade it to 7.
As for now, my build has no OTA updates to 7, but I saw that there's a UK build for Android 7.
Question is... if my build number is G930FXXU1BPLB, can I upgrade it to other build number, as for example to: G930FXXU1DPLT ?
And.. if I can do that... Will I get OTA updates of the future releases? It's important to note that I live in Israel, so what happens if I Install an UK build?
Will it block me to get OTA updates because I'm not from the region?
Thanks!
Everything works, except WifiCalling and VoLTE, if you switch to a british firmware.
So OTA's and the like won't be a problem. It's the same experience as if you were using your current german firmware in Israel.
For OTA's be sure to use the correct CSC file, so it get's changed aswell. DBT/BTU mix stuff won't get you OTA's
Given that i had a problem with restoring WhatsApp's chatlog when switching from 6.0 to 7.0 (which according to google and a post here, i'm the only one to have it), it's still advised to read up on app compatibility.
Also it's advised to do a factory reset after flashing, so everything is reset.
Tekkpriest said:
Everything works, except WifiCalling and VoLTE, if you switch to a british firmware.
So OTA's and the like won't be a problem. It's the same experience as if you were using your current german firmware in Israel.
For OTA's be sure to use the correct CSC file, so it get's changed aswell. DBT/BTU mix stuff won't get you OTA's
Given that i had a problem with restoring WhatsApp's chatlog when switching from 6.0 to 7.0 (which according to google and a post here, i'm the only one to have it), it's still advised to read up on app compatibility.
Also it's advised to do a factory reset after flashing, so everything is reset.
Click to expand...
Click to collapse
Thanks,
So I understand you won't any problems. And I don't really need the WiFi calling.
But about the VoLTE, do you mean that I'll loose the 4G ? Or do you something else?
About the CSC, I have to admit that I don't really know what it is. Is it a file that comes with the files that I should flash?
About the build number, I've just saw that there's a newer build of UK according to sammobile website: G930FXXU1DQB3 (released on the 06/02/2017), and the G930FXXU1DPLT (released on 16/01/2017) that I've stated in the original topic.
Is there a difference between them, should I go with the G930FXXU1DQB3 ?
Thanks again.
Semek said:
Thanks,
So I understand you won't any problems. And I don't really need the WiFi calling.
But about the VoLTE, do you mean that I'll loose the 4G ? Or do you something else?
About the CSC, I have to admit that I don't really know what it is. Is it a file that comes with the files that I should flash?
About the build number, I've just saw that there's a newer build of UK according to sammobile website: G930FXXU1DQB3 (released on the 06/02/2017), and the G930FXXU1DPLT (released on 16/01/2017) that I've stated in the original topic.
Is there a difference between them, should I go with the G930FXXU1DQB3 ?
Thanks again.
Click to expand...
Click to collapse
VoLTE is the "new" standard for calling.
Normally, when you call someone and don't use VoLTE, you fall back to the local 2G/3G network, which is slower and has lesser quality. Since many providers, atleast in my country, haven't completely switched over (for example prepaid customers still have the outdated 2G/3G calling), you should not notice much of a difference, since it's the same call quality as in 2013 for example. You will still understand people, as they will understand you.
4G / LTE data connectivity is unaffected by it and works without any problems, regardless of country etc. , unless you travel to america and use a local providers sim card there, where you might need the Snapdragon variant of the S7.
That being said, i flashed the newest firmware (DQB3) and it works flawlessly, except afromentioned WhatsApp problem. The only difference is, the update dated to the end of january is included, which fixes some stuff.
A CSC file contains country specific settings, like frequencies used, APN's and even carrier brandings are found in this file, which is why they might differ in size for different regions/carriers.
Because of that, VoLTE and wifi calling might not work, since, in this case, they use the BTU networks standard and you are not in the UK but Israel, aswell as probably not using a british provider.
Anyways back to your question:
There are 2 CSC files, the ROM`s CSC one and a HOME_CSC.
To receive OTA's, you will need to flash the normal CSC and not the HOME one. This will reset and wipe your device (backup all important stuff beforehand) and you get a device "fresh out of the box" bought in the UK.
The HOME CSC does not wipe your memory, but you won't receive OTA updates aswell, since your device hasn't changed it CSC and thus "is not an original BTU device".
So if you go down that route, which is perfectly acceptable and should not make any problems, you will have to flash updates manually via Odin.
Tekkpriest said:
VoLTE is the "new" standard for calling.
Normally, when you call someone and don't use VoLTE, you fall back to the local 2G/3G network, which is slower and has lesser quality. Since many providers, atleast in my country, haven't completely switched over (for example prepaid customers still have the outdated 2G/3G calling), you should not notice much of a difference, since it's the same call quality as in 2013 for example. You will still understand people, as they will understand you.
4G / LTE data connectivity is unaffected by it and works without any problems, regardless of country etc. , unless you travel to america and use a local providers sim card there, where you might need the Snapdragon variant of the S7.
That being said, i flashed the newest firmware (DQB3) and it works flawlessly, except afromentioned WhatsApp problem. The only difference is, the update dated to the end of january is included, which fixes some stuff.
A CSC file contains country specific settings, like frequencies used, APN's and even carrier brandings are found in this file, which is why they might differ in size for different regions/carriers.
Because of that, VoLTE and wifi calling might not work, since, in this case, they use the BTU networks standard and you are not in the UK but Israel, aswell as probably not using a british provider.
Anyways back to your question:
There are 2 CSC files, the ROM`s CSC one and a HOME_CSC.
To receive OTA's, you will need to flash the normal CSC and not the HOME one. This will reset and wipe your device (backup all important stuff beforehand) and you get a device "fresh out of the box" bought in the UK.
The HOME CSC does not wipe your memory, but you won't receive OTA updates aswell, since your device hasn't changed it CSC and thus "is not an original BTU device".
So if you go down that route, which is perfectly acceptable and should not make any problems, you will have to flash updates manually via Odin.
Click to expand...
Click to collapse
Wow, thanks for the reply!
I just want to be sure before I do it...
Are those the only options I need to check & load in Odin for flashing the new ROM?
Because I have few more files in the folder like BL and CP.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
So are AP and CSC enough?
Thanks!
Semek said:
Wow, thanks for the reply!
I just want to be sure before I do it...
Are those the only options I need to check & load in Odin for flashing the new ROM?
Because I have few more files in the folder like BL and CP.
So are AP and CSC enough?
Thanks!
Click to expand...
Click to collapse
Hi ahi,
I live in Israel too and flashed the UK firmware on my s7.
I install everything that was packed in the rar you download.
Nougat is awesome for our phone.
OrenGazala said:
Hi ahi,
I live in Israel too and flashed the UK firmware on my s7.
I install everything that was packed in the rar you download.
Nougat is awesome for our phone.
Click to expand...
Click to collapse
Hi Oren,
It's great to hear that everything works smoothly from someone from my country!
So, just to make sure, before I do anything stupid (or not, heh)... in Odin you selected & loaded the: BL, AP, CP and CSC?
Toda
Semek said:
Hi Oren,
It's great to hear that everything works smoothly from someone from my country!
So, just to make sure, before I do anything stupid (or not, heh)... in Odin you selected & loaded the: BL, AP, CP and CSC?
Toda
Click to expand...
Click to collapse
Select everything. Bootloader is very important for example. Otherwise you most likely will brick your phone
Anyways enjoy Nougat, i'm actually doing the same process again now, to see if i can get my WA Backup to work somehow.
Tekkpriest said:
Select everything. Bootloader is very important for example. Otherwise you most likely will brick your phone
Anyways enjoy Nougat, i'm actually doing the same process again now, to see if i can get my WA Backup to work somehow.
Click to expand...
Click to collapse
Just finished successfully the process and I'm on 7.0 now
Thank you, you've been very helpful. About the Whatsapp, looks like it restoring fine for me, or at least in the process (it's still downloading the media, the conversation were ok).
Semek said:
Just finished successfully the process and I'm on 7.0 now
Thank you, you've been very helpful. About the Whatsapp, looks like it restoring fine for me, or at least in the process (it's still downloading the media, the conversation were ok).
Click to expand...
Click to collapse
Very nice, good to know that it works for you.
Currently doing a downgrade with full wipe to 6.0.1 and then update via OTA. Let's see if that fixes it. Otherwise i have to start clean
Anyways, again enjoy Nougat. Should run very good out of the box
Semek said:
Just finished successfully the process and I'm on 7.0 now
Thank you, you've been very helpful. About the Whatsapp, looks like it restoring fine for me, or at least in the process (it's still downloading the media, the conversation were ok).
Click to expand...
Click to collapse
Hey,
I'm happy to know that everything works fine.
Enjoy!
Guys, what about Samsung Pay and Android Pay? Are they working fine? I am on XSA. Australia has Samsung pay and Android Pay working.
Sent from my SGP521 using XDA-Developers Legacy app
I was on vodafone phone with there bloatware so I flashed btu with csc not home csc once I flashes it wiped cache and reset phone then when it loaded up I got the new ota patch for nougat plus I've also got wifi calling.
---------- Post added at 07:07 PM ---------- Previous post was at 07:03 PM ----------
Just a question can some confirm if using stock Samsung browser when keyboard comes up but prodictive text don't work. But when using chrome it works?
I've got a question too. I would like to change my 6.0.1 on 7.0, also British stuff but I'm a little bit concerned about mixing XEO and BTU. Is it possible to mix 6.0.1 HOME_CSC XEO (latest) with 7.0 British BTU + PIT file from the 7.0 BTU Home (I would like to make factory reset and have my native CSC file)? Does it make difference to take PIT file from 6.0.1 or 7.0 Home file either?
venki5star said:
Guys, what about Samsung Pay and Android Pay? Are they working fine? I am on XSA. Australia has Samsung pay and Android Pay working.
Sent from my SGP521 using XDA-Developers Legacy app
Click to expand...
Click to collapse
For Samsung Pay, i can't confirm, but since Android Pay definitely works, Samsung Pay should work aswell, if you did not trigger Knox etc.
mimo2008 said:
I was on vodafone phone with there bloatware so I flashed btu with csc not home csc once I flashes it wiped cache and reset phone then when it loaded up I got the new ota patch for nougat plus I've also got wifi calling.
---------- Post added at 07:07 PM ---------- Previous post was at 07:03 PM ----------
Just a question can some confirm if using stock Samsung browser when keyboard comes up but prodictive text don't work. But when using chrome it works?
Click to expand...
Click to collapse
Just tested it, i have predictive text in either browser, or anywhere i do have a keyboard.
MalfiRaggraClan said:
I've got a question too. I would like to change my 6.0.1 on 7.0, also British stuff but I'm a little bit concerned about mixing XEO and BTU. Is it possible to mix 6.0.1 HOME_CSC XEO (latest) with 7.0 British BTU + PIT file from the 7.0 BTU Home (I would like to make factory reset and have my native CSC file)? Does it make difference to take PIT file from 6.0.1 or 7.0 Home file either?
Click to expand...
Click to collapse
You can mix it, but personally, i advice against it. Might reduce battery life, you will have to flash every update manually, since OTA does not work with a mix of XEO/BTU.
Also, since XEO and BTU share a common CSC file (they are OXA's, multipurpose CSC's) in most nougat roms around, you might need to root anyway to completely switch over, if a repartition + factory / cache reset won't work.
So to summarize, yes it's possible to use the HOME_CSC to avoid switching your CSC and wiping your phone. It's also possible to stay on a 6.0.1 CSC, but! there might be problems later.
If possible always do a fresh install and if your phone runs well currently, why not stay on Marshmallow? Depending on the current OTA release, which you might have to look up for your country, it might be better to wait a bit. Personally for me, it'd be a complete switch over, since i am too lazy to flash every update manually.
That being said, you won't need a PIT file going from 6.0.1 to 7.0, since it is included in the CSC. Pit files might be useful, if you want to downgrade and in some other cases, but not if you just want to upgrade. They include repartition infos, which are important, if you don't have a "4 file flash" (yucks, my english for explaining it better, sorry).
Personally for me, it'd be a complete switch over, since i am too lazy to flash every update manually.
Click to expand...
Click to collapse
Yeah, but that wouldn't be a problem for me, cuz I've been using custom ROMs manual flashing on my old fellow Galaxy S4, whenever update was avaiable but anyway, who doesn't want to make things easier?
So to summarize, yes it's possible to use the HOME_CSC to avoid switching your CSC and wiping your phone. It's also possible to stay on a 6.0.1 CSC, but! there might be problems later.
Click to expand...
Click to collapse
So what are the main drawbacks using BTU CSC that the XEO? Will it, paradoxically, drain more battery because of incompatibility of GSM frequencies?
If possible always do a fresh install and if your phone runs well currently, why not stay on Marshmallow?
Click to expand...
Click to collapse
Marshmallow works perfectly for my phone, especially for battery and performance but obviously, I'm curious whether Nougat would it make more perfect
Depending on the current OTA release, which you might have to look up for your country, it might be better to wait a bit.
Click to expand...
Click to collapse
Samsung consultant said to me that they EVEN DON'T KNOW when 7.0 will be relased for our country. That made me angry and I said to myself that I will take the matters into one’s own hands.
Pit files might be useful, if you want to downgrade and in some other cases, but not if you just want to upgrade. They include repartition infos, which are important, if you don't have a "4 file flash" (yucks, my english for explaining it better, sorry).
Click to expand...
Click to collapse
So, If I have only AP file, I will need to use PIT file for downgrading also, right?
And very well explained issue, it really helps me a lot in a certain level of understanding the given topic
MalfiRaggraClan said:
Yeah, but that wouldn't be a problem for me, cuz I've been using custom ROMs manual flashing on my old fellow Galaxy S4, whenever update was avaiable but anyway, who doesn't want to make things easier?
So what are the main drawbacks using BTU CSC that the XEO? Will it, paradoxically, drain more battery because of incompatibility of GSM frequencies?
Marshmallow works perfectly for my phone, especially for battery and performance but obviously, I'm curious whether Nougat would it make more perfect
Samsung consultant said to me that they EVEN DON'T KNOW when 7.0 will be relased for our country. That made me angry and I said to myself that I will take the matters into one’s own hands.
So, If I have only AP file, I will need to use PIT file for downgrading also, right?
And very well explained issue, it really helps me a lot in a certain level of understanding the given topic
Click to expand...
Click to collapse
Sorry for the late reply, work called.
Usually a BTU won't draw more battery or anything, since frequencies mostly are standard in every country. It's more like saved APN's etc. (which you can change manually via your phone's settings menu anyways). But as previously mentioned to the original poster, you can depending on where you live, loose out on VoLTE and Wifi-Calling, since those a carrier specific and usually not included in an unbranded ROM. If those are important to you, you probably want to stick with your current ROM, even if i do understand that new things are always fun. Even i did not wait for my carrier..
But having OTA updates and stuff like that is convenient, otherwise you'd have to flash every update like this one, which is why i recommend using a full BTU firmware, if you really wanna do it. Well, you don't have to flash it manually.. but it won't change since OTA updates are CSC based. So for example if Android 7.1 or another security patch will come out, you will need to wait until your XEO (Poland, i presume?) firmware get's the corresponding update, which according to you might take ages, since the original Nougat is not even out yet.
If you only have an AP file, i recommend using updato.com / samfirmware to download the current image of the BTU. Since you will need Bootloader and Modem files aswell (BL, CP respectively), aswell as the CSC file. I have checked though, your current CSC is included in the OXA (multipurpose CSC) of the BTU. So you might wanna flash a non BTU image first to change the CSC to something not included in the BTU one. Otherwise you will need root access to change it manually and this triggers Knox as we all know and thus your warranty is gone. And if you flash a non BTU image, be sure to factory reset / clear cache via recovery mode after installing and then let it boot normally, so the CSC change will take effect, afterwards flash the BTU image will all files and do the same. Be sure to backup your data beforehand, since they will get lost and do NOT use the HOME_CSC file. This one is for not changing the CSC at all and will retain your data. Use the ROM's CSC. Also always check the rom for your model, i have seen people who used a 935F (which is the edge) ROM on a flat S7 (which is 930F in europe mostly). But that's why i highlight it.
If you have further questions, i'll answer them to the best of my abilities
Oh and i almost forgot, you don't need a pit file . It's really just for more engineerical purposes as explained in ODIN. Current Marshmallow and Nougat Roms consist of 4 parts, which include the corresponding PIT.
I highly recommend not using the PIT file, if you don't know what it entails (you will need to look on the internet for it, since it will be quite lengthy if i explain). In short, as long as an update does not use a different partition layout and / or you mess up your partitions by yourself, you just don't need it. And doing afromentioned, would require extensive knowledge about Android anyways. As long as you don't root and modify your system yourself, you most likely will always be fine. And since rooting does have it's drawback (like some Apps not working due to security, Samsung warranty void etc), i'd not recommend it anyways, unless you are experienced
Sorry for the late reply, work called.
But as previously mentioned to the original poster, you can depending on where you live, loose out on VoLTE and Wifi-Calling, since those a carrier specific and usually not included in an unbranded ROM.
Click to expand...
Click to collapse
Np
Doesn't matter for me, I don't use them either, because I am on unbranded one from the very beginning
XEO (Poland, i presume?)
Click to expand...
Click to collapse
Yes, exactly.
If you only have an AP file, i recommend using updato.com / samfirmware to download the current image of the BTU.
Click to expand...
Click to collapse
No, I have 4 file package from Sammobile, but the previous question was about what could I do when I have only AP file. But I know this now
Since you will need Bootloader and Modem files aswell (BL, CP respectively), aswell as the CSC file. I have checked though, your current CSC is included in the OXA (multipurpose CSC) of the BTU. So you might wanna flash a non BTU image first to change the CSC to something not included in the BTU one.
Click to expand...
Click to collapse
For Example?? And If I want to make full switch over towards BTU, should I really need to flash something non - BTU or just pure BTU (with BTU CSC file)? And what if my carrier will release XEO 7.0 stuff... then would I need to flash the same non BTU/XEO stuff to change CSC again?
Oh and i almost forgot, you don't need a pit file . It's really just for more engineerical purposes as explained in ODIN.
Click to expand...
Click to collapse
I have used the PIT file when I was debranding, that is why I was asking about extended purposes Obviously, I haven't got extensive knowledge about android but I know just the basics (the reason why it looks like that is I am not programming anything, otherwise I would know more, much more).
And, using occasion... Since S7 ownership I was wondering how root would affect function "safe start". Would it be possible to bypass this function COMPLETELY after launch, on the rooted phone (For example: if someone could steal it and unluckily, had extensive android knowledge could bypass launch/start password, and, the worst, security lock, when my phone is fully rooted)?

Wrong modem (CP) version?

Hi guys,
it's been a few weeks that I'm struggling to understand why I'm not getting software updates.
My phone is stock, never rooted nor flashed. It's been with this software since when I bought it.
My CSC is VDI and I was noticing that potentially the modem version on my phone (CP) is wrong.
Here's my details:
AP: G930FXXU1DQEI
CSC: G930FVFG1DQE3
CP: G930FXXU1BPJJ
Model: SM-G930F
I was trying to figure out why I'm not getting updates and from what I can see here: http://fota-cloud-dn.ospserver.net/firmware/VDI/SM-G930F/version.xml I should have a different CP version in order to get the update (G930FXXU1DQD7) which also seems in line with what this firmware page has: https://samsung-firmware.org/download/Galaxy__S7__/n494/VDI/G930FXXU1DQEI/G930FVFG1DQE3/
Now, a couple of questions.
- Any idea of the why? Could it be just a mistake in the production of the device?
- Is my hypothesis correct that I'm not receiving updates because of this?
- Would it be safe to only flash the CP part with ODIN and let the device receive the OTA normally?
Looking forward to hearing your thoughts!
I've not heard of a modem stopping updates, but it's not an area I'm fully familiar with.
Flashing modems with Odin is probably the most harmless flash you can do as long as it's for the same android version (e.g. don't flash a nougat modem on a marshmallow device)
You could also try flashing the latest home_csc, and bootloader (BL) if you really wanted to. Both of those are pretty trivial to flash too. If you do flash csc just make sure it's home_csc, and regular csc wipes your data.
Beanvee7 said:
I've not heard of a modem stopping updates, but it's not an area I'm fully familiar with.
Flashing modems with Odin is probably the most harmless flash you can do as long as it's for the same android version (e.g. don't flash a nougat modem on a marshmallow device)
You could also try flashing the latest home_csc, and bootloader (BL) if you really wanted to. Both of those are pretty trivial to flash too. If you do flash csc just make sure it's home_csc, and regular csc wipes your data.
Click to expand...
Click to collapse
Hi, thanks for your reply.
I ended up flashing CP only for the firmware I was at and I straight away got the update notification and the subsequent security patches up to December 2017 ( was stuck at may ). I'm at the latest firmware for my CSC now.

Unlocked s10e from ATT (SM-G970U) - Can I flash G970U1?

I purchased an "unlocked" S10e off Swappa. It works on my Mint Mobile account just fine. But, it has the ATT carrier branding and bloatware. And, it's stuck at Android 10/October 2020 Security Update/OneUI 2.5.
Can I Odin flash the U1 firmware without causing any problems? It's my understanding that the G970U1 is essentially the same device, but sold by Samsung as SIM unlocked and with no carrier branding/bloatware.
If I download the U1, would I / should I push BL, AP, CP, CSC *and* USERDATA?
Thanks.
dwcasey said:
I purchased an "unlocked" S10e off Swappa. It works on my Mint Mobile account just fine. But, it has the ATT carrier branding and bloatware. And, it's stuck at Android 10/October 2020 Security Update/OneUI 2.5.
Can I Odin flash the U1 firmware without causing any problems? It's my understanding that the G970U1 is essentially the same device, but sold by Samsung as SIM unlocked and with no carrier branding/bloatware.
If I download the U1, would I / should I push BL, AP, CP, CSC *and* USERDATA?
Thanks.
Click to expand...
Click to collapse
I ended up using the Samsung Firmware downloader from here
Samsung Firmware Downloader is a free cross-platform tool to download software updates for Galaxy devices
Looking to download software updates for your Samsung Galaxy device? Check out Samsung Firmware Downloader - it's free and open source!
www.xda-developers.com
Pulled down the latest G970U1 with region XAA. It handled the decryption.
But reading folks having issues going from a U to U1, vice versa, or separate carriers, I found this and downloaded the latest version (originally found linked from here https://forum.xda-developers.com/t/...-cant-flash-u1-with-odin-etc-att-s21.4238775/)
Patched Odin 3.13.1
For those looking for a modified, modded, or patched odin that is a newer build than all the fake and renamed prince comsy 3.12.3 versions floating around. I patch recent Odin versions to offer similar functionality to the princecomsy; in that...
forum.xda-developers.com
I then extracted the five files and pulled them into the patcheD Odin. Powered off the phone. Started download mode (down vol+bixby button) and plugged in. Odin saw the phone, I clicked start and it finished in only a few minutes.
Is U1s bootloader locked like the u Version?
What about the Canada W?
dwcasey said:
I ended up using the Samsung Firmware downloader from here
Samsung Firmware Downloader is a free cross-platform tool to download software updates for Galaxy devices
Looking to download software updates for your Samsung Galaxy device? Check out Samsung Firmware Downloader - it's free and open source!
www.xda-developers.com
Pulled down the latest G970U1 with region XAA. It handled the decryption.
But reading folks having issues going from a U to U1, vice versa, or separate carriers, I found this and downloaded the latest version (originally found linked from here https://forum.xda-developers.com/t/...-cant-flash-u1-with-odin-etc-att-s21.4238775/)
Patched Odin 3.13.1
For those looking for a modified, modded, or patched odin that is a newer build than all the fake and renamed prince comsy 3.12.3 versions floating around. I patch recent Odin versions to offer similar functionality to the princecomsy; in that...
forum.xda-developers.com
I then extracted the five files and pulled them into the patcheD Odin. Powered off the phone. Started download mode (down vol+bixby button) and plugged in. Odin saw the phone, I clicked start and it finished in only a few minutes.
Click to expand...
Click to collapse
Can we get an update? How did it turn out? Were you able to get OTA updates? Everything work okay?
I might try this at the library tomorrow. Downloading firmware really sucks without wifi.
supertac said:
Is U1s bootloader locked like the u Version?
What about the Canada W?
Click to expand...
Click to collapse
I don't believe this process provides an unlocked bootloader.
Nooblet1001 said:
Can we get an update? How did it turn out? Were you able to get OTA updates? Everything work okay?
I might try this at the library tomorrow. Downloading firmware really sucks without wifi.
Click to expand...
Click to collapse
A little scary process, but overall I'm happy and have had great success. I've received two monthly Security updates since flashing. All the branding/bloat is gone (well, still have Samsung bloat, but that is easily dealt with).
dwcasey said:
A little scary process, but overall I'm happy and have had great success. I've received two monthly Security updates since flashing. All the branding/bloat is gone (well, still have Samsung bloat, but that is easily dealt with).
Click to expand...
Click to collapse
IT WORKED!!! I can't believe it worked first try! Thank you so much for putting the guide out there, I'm so happy. Thanks a ton! You're awesome.
I have a mexican TCE type Eyxnos... I switch switching the firmware- the reception got weak if I switched it away from the TCE brand...so I had to switch back
lame
I have bought myself an s10e 256 GB from the US and i am stuck on Android 10 June 2020. ATT wont give me any Updates because i am i Germany and do not have an ATT sim card.
The phone is unlocked as my german sim works fine.
I have ATT bloatware on there ....
The phone tells me i am on TE8
SmartSwitch tells me it has the latest FW
So can someone point me to a newbie description how to to Flash Android 11 onto it.
Never done this before. Never rooted but jailbroken all my iPhones. Android is comlicated in this regard.
Thx
This is so effn confusing... samloader does not work.
freija has no firmware
Sammobile has 2 devices u and u1
Multiple firmwares to choose from ....
I am about to ditch samsung 4 good....
Figured it out and its working now XAA from the G970U1
dwcasey said:
I ended up using the Samsung Firmware downloader from here
Samsung Firmware Downloader is a free cross-platform tool to download software updates for Galaxy devices
Looking to download software updates for your Samsung Galaxy device? Check out Samsung Firmware Downloader - it's free and open source!
www.xda-developers.com
Pulled down the latest G970U1 with region XAA. It handled the decryption.
But reading folks having issues going from a U to U1, vice versa, or separate carriers, I found this and downloaded the latest version (originally found linked from here https://forum.xda-developers.com/t/...-cant-flash-u1-with-odin-etc-att-s21.4238775/)
Patched Odin 3.13.1
For those looking for a modified, modded, or patched odin that is a newer build than all the fake and renamed prince comsy 3.12.3 versions floating around. I patch recent Odin versions to offer similar functionality to the princecomsy; in that...
forum.xda-developers.com
I then extracted the five files and pulled them into the patcheD Odin. Powered off the phone. Started download mode (down vol+bixby button) and plugged in. Odin saw the phone, I clicked start and it finished in only a few minutes.
Click to expand...
Click to collapse
hey, im using g970u from verizon, and im using it indonesia far from usa and it work with my carrier. But i want to change the firmware with the g970u1 for fast update and latest security patch. i Downloded the VZW g970u1 and trying to flashing with odin 3.14.4, 3.14.1, 3.13.1 (including Patched version) but nothing is work, it stuck at setup connection and ended up with fail. How i solve this? many thanks
Excellent share! I purchased an s10e snapdragon unlocked version SM-G970U.
The service provider/Carrier version was ATT/XAA/ATT.
It had all the AT&T bloatware, but my simcard worked fine in the phone (I am based in India)
Furthermore, it had Android 11 and I was not able to upgrade to 12 as it kept saying "phone is up to date" whenever I searched for new updates.
It also dint have that mobile data toggle switch in the drop down task bar.
I followed all the steps in the second post of this thread and I was able to upgrade it to Android 12!
Now the service provider/Carrier version shows as = XAA/XAA/ATT (SM-G970U1). All the ATT bloatware is gone and the mobile data toggle switch is now visible in the drop down task bar. My simcard works fine too!
Good stuff. Thank you @dwcasey .

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