Hi everyone,
Just got a used S5 from ebay and it's a carrier unlocked AT&T model (I'm in the UK). I've successfully upgraded to Marshmallow using Odin and was looking at root options. I've done some looking around the forums and just wanted to check if I was understanding the situation properly:
1) Are the AT&T models impossible to bootloader unlock?
2) If this is true then I guess any ROMs other than stock based are out of the question?
3) Is it not possible to have root on MM? Is this just because it hasn't been done yet, or is there something inherent in MM that makes it impossible?
4) Therefore, it's only possible to have rooted s5 on LP? And only ROMS based on LP are available?
Thanks in advance !
How did you update the firmware, since i'm having an AT&T S5 with 5.1.1 on it (G900AUCU4COI5), and when searching for updates it's always telling me that there are no updates available, although i'm sure that there are at least 10 mini-patches and patches (5.1.1 -> 6.0).
@tooplanx
Your assumptions are correct. There is an encryption key that has the bootloader locked down and only the carrier can release it. Most Samsung US variants are notorious for this. So yes only stock ROM or a 5.0 based custom ROM is available. Root could be possible through a security exploit on MM (especially since its security patches are now 6 months out of date) but I don't think any developers are working on it that I know of as most of them have moved onto other devices and variants. So at this time yes it is only possible to have root on 5.0.
@Cornul11
Are you using a working AT&T sim card when checking for the update? It won't appear when using another network.
Cornul11 said:
How did you update the firmware, since i'm having an AT&T S5 with 5.1.1 on it (G900AUCU4COI5), and when searching for updates it's always telling me that there are no updates available, although i'm sure that there are at least 10 mini-patches and patches (5.1.1 -> 6.0).
Click to expand...
Click to collapse
Unless you have an AT&T working sim, you will need to install the upgrade with some software called 'Odin' and the manually downloaded stock 6.0 ROM for the G900A. Kies doesn't work either.
Have a look for 'Odin upgrade' in these forums, it should be easy enough to find.
chin'ah.girl said:
@tooplanx
Your assumptions are correct. There is an encryption key that has the bootloader locked down and only the carrier can release it. Most Samsung US variants are notorious for this. So yes only stock ROM or a 5.0 based custom ROM is available. Root could be possible through a security exploit on MM (especially since its security patches are now 6 months out of date) but I don't think any developers are working on it that I know of as most of them have moved onto other devices and variants. So at this time yes it is only possible to have root on 5.0.
@Cornul11
Are you using a working AT&T sim card when checking for the update? It won't appear when using another network.
Click to expand...
Click to collapse
tooplanx said:
Unless you have an AT&T working sim, you will need to install the upgrade with some software called 'Odin' and the manually downloaded stock 6.0 ROM for the G900A. Kies doesn't work either.
Have a look for 'Odin upgrade' in these forums, it should be easy enough to find.
Click to expand...
Click to collapse
I don't have an AT&T sim card, so no updates were being shown as available for me. I downloaded the firmware and installed it using ODIN, now i have the latest available version which is G900AUCS4DQD1 (6.0.1).
Related
Hello guys;
First of all, Let me post my phone software info:
Android Version: 4.4.2
Build Number: KOT49H.G870AUCU1ANG3
Phone Location: out USA
I tried all methods available to update my phone at least lollipop not even Marshmallow! and every time i get the message "The is the latest software update available to your phone"!
I tried the software update inside settings, Kies 3 (also emergency recovery method), Smart Switch, AT&T SIM Card inserted with USA VPN...etc)...non of them worked for me!
Does any one manage to have a legit Lollipop or Marshmallow Odin Stock Flash?!
I saw some methods over recovery with OTA update packages but it is too risky since there is no Stock ROM for the device in Sammobile also i am afraid to brick the device or losing IMEI and no service Box is supporting it!
looking for your help!?
milanguy said:
Hello guys;
First of all, Let me post my phone software info:
Android Version: 4.4.2
Build Number: KOT49H.G870AUCU1ANG3
Phone Location: out USA
I tried all methods available to update my phone at least lollipop not even Marshmallow! and every time i get the message "The is the latest software update available to your phone"!
I tried the software update inside settings, Kies 3 (also emergency recovery method), Smart Switch, AT&T SIM Card inserted with USA VPN...etc)...non of them worked for me!
Does any one manage to have a legit Lollipop or Marshmallow Odin Stock Flash?!
I saw some methods over recovery with OTA update packages but it is too risky since there is no Stock ROM for the device in Sammobile also i am afraid to brick the device or losing IMEI and no service Box is supporting it!
looking for your help!?
Click to expand...
Click to collapse
Thats becuz there isnt for att yet. Therr are over the airs for 5.0 but nothing else. And the update to 5.1 but its stock and unrooted you have to be rooted im sure for that and using flashfire for it so it just changes rom and not bootloader . Allowing you to still downgrade back.
Sent from my SM-G900F using XDA-Developers mobile app
I have a tab s2 sm-t710 on nougat T710XXU2DQCL that was installed OTA and would like to know if i am able to downgrade to 6.0.1. The device is 100% stock and was wondering if ODIN would give me any grief about downgrading. The PDA number of the 6.0.1 file is T710XXU2CPK1 (Cellular South).
Thanks
On paper, I think you should be fine. :angel:
I'd also like to know this as battery life seemed much better on 6.0.1 for me.
i did downgrade my T 815 from 7.0m to 6.01 using odin. didnt face any difficulties. i did a complete wipe/format after i downgraded .
Can you not downgrade with TWRP as well?
Anyone knows how can I downgrade this tablet? It's in stock
Kyrat said:
Anyone knows how can I downgrade this tablet? It's in stock
Click to expand...
Click to collapse
I used Odin and firmware downloaded from sammobile and it worked flawlessly. I've performed downgrades on over 100 tablets so far and they have all worked good.
Downgrded my t713 long time ago and didn't have a single problem, you just need to download a compaitable firmware from sammobile!
Kyrat said:
Anyone knows how can I downgrade this tablet? It's in stock
Click to expand...
Click to collapse
You're safe to downgrade as long as it's allowed. Older builds will fail immediately so there is no harm to downgrade.
I've seen a few people asking about downgrading. Whats the reason behind this? Is N glitchy?
Need help downgrading SM-T719Y
Hawkhell said:
I've seen a few people asking about downgrading. Whats the reason behind this? Is N glitchy?
Click to expand...
Click to collapse
N does not work at all well with DJI drone remote controllers. I foolishly updated my brand new SM-T719Y 8" and Now I cannot connect to my drone at all. I have an pre 2016 Tab S2 on Android 6.01 and bingo works.
This size pad is the preferred size for drones and has enough grunt to provide stutter free vision. Cannot comment on anything else about N as this pad will only be used for my drone...
Yt2...
Beut said:
You're safe to downgrade as long as it's allowed. Older builds will fail immediately so there is no harm to downgrade.
Click to expand...
Click to collapse
Hi Beut,
I have been trying yo downgrade my Tab S2 SM-T719Y LTE from Nougat to 6.01 and have correct downgrade and Odin. Every time I try to downgrade it fails straight away, so I was wondering what you ment by "as long as it is allowed" & "older builds" will fail immediately.
I need to get this happening as I cant fly my drone.
Cheers Yts...
I don't have your model so it cannot verify. However, other models I can downgrade to older builds close to the Nougat.
Like SM-T580 or SM-P580, both are Android 7, QF1 and QE4 respectively. I can downgrade them to PL4 or PL2, Android 6 but not the PG1.
Q: 17 or 2017
P: 16 or 2016.
The second letter is the month it's released.
You also need the right bootloader, different OS has different bootloader. Many just flash the AP file only without bootloader, it'll failed when downgrade.
Is it possible that you cannot downgrade Nougat to 6.01 as every time I try on my SM-T719Y Tab S2 LTE, it fails straight away. I have tried 3 different downloads and all failed, but Odin will let me overwrite my Nougat with a downloaded version of Nougat from the same web location as I got one of the 6.01 firmwares from.
Here are my fail messages.
View attachment 4242043 View attachment 4242046
Is it me or is it this model of the Tab S2 SM-T719Y????
When downgrade to MM you need the BL ( Bootloader ) goes with the AP . Boot loader of Nougat is not the same as MM , however bootloader of LTE version is locked
Sammy doesn't want you to downgrade.. nougat is planned obsolescence, I'd say.
Beut said:
When downgrade to MM you need the BL ( Bootloader ) goes with the AP . Boot loader of Nougat is not the same as MM , however bootloader of LTE version is locked
Click to expand...
Click to collapse
Hey I've been trying to downgrade my T719Y for days now. Constantly failing and googling everything I can to find where I'm going wrong.
How would I know if I have the LTE version? And if I do and the bootloader is locked, does that mean I can't downgrade?
If I don't have the LTE version, you're saying I need the bootloader and AP to downgrade? Where can I find the bootloader?
I'll keep searching and trying but this is wearing me down. Any assistance would be greatly appreciated. My surveyors can't do a damn thing with our giant UAV until I fix this
LTE version is the one that has SIM, usually it's next to SD slot. Most LTE versions have locked bootloader, that's why you cannot downgrade firmware.
I just kept an older phone for apps available only for 6.0. Like scr recorder. Otherwise there are no reasons to downgrade
Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Doubtful, since AT&T has a locked bootloader. If the bootloader was unlocked you might be able to try.
hiilikepie said:
Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Click to expand...
Click to collapse
You cannot flash a G920T firmware on a G920A. First off, Odin won't let you because the G920T firmware is only signed to be flashed on the G920T.
And even if you somehow rooted and used FlashFire to force the firmware onto your device, the firmware would brick the device, and without a USB jig or SD card port, the brick would be permanent.
hiilikepie said:
Hi all,
I bought the Galaxy S6 from AT&T when it came out, but switched over to T-Mobile from AT&T last year. Because of this, I have been unable to get any updates and have been stuck on Android 6.0 when the current release is android 7.0, so I've been thinking of flashing my phone. I was curious as to whether I'm able to flash my G920A with Tmobile's G920T rom? Would it work? And if so, after I flash it, would I be able to receive updates normally from T-mobile's servers, as I'm currently using a T-mobile sim, or would I have to flash every subsequent update?
Thanks
Click to expand...
Click to collapse
I too am seeking answers on this as I have an SM-920A I brought over to t-mobile. Unlocked the phone, installed the t-mobile SIM and the phone works fine, except, it still has all the old ATT apps I no longer need or desire to be there AND without the T-Mobile apps installed, I cannot use their LTE Signal Booster. Is there any way I can install these t-mobile apps that would have come with the SM-920T load?
BWMcAMA said:
I too am seeking answers on this as I have an SM-920A I brought over to t-mobile. Unlocked the phone, installed the t-mobile SIM and the phone works fine, except, it still has all the old ATT apps I no longer need or desire to be there AND without the T-Mobile apps installed, I cannot use their LTE Signal Booster. Is there any way I can install these t-mobile apps that would have come with the SM-920T load?
Click to expand...
Click to collapse
https://www.google.com/amp/s/forum....t-samsung-g920a-s6-g925a-s7edge-t3564637/amp/
Just do this and remove the AT&T apps you don't want completely.
Sent from my SM-G955U using Tapatalk
So, what can be done -- if anything--to solve this issue?
-wrong
Hey guys!
Today I have purchased my first Samsung device since Galaxy S2 (I've been using xiaomi since then) and I have met a bit of an issue with my phone. The current version installed is One UI 1.1 (June 1 security patch) and the phone says it's the latest version. I have purchased it from Hungarian Telekom provider. Is it possible, that the provider is handling OTA updates? If so, is it possible to install the generic version instead of the provider firmware via odin? I thought provider OTA is no longer an existing stuff, but It seems that it's not.
Thanks for the answers!
Edit: most importantly: is it possible to relock bootloader if I wanted to sell it sometime?
Yes, the provider handles the updates unless you are on the unlocked Samsung firmware in which case Samsung itself will provide updates. There are tons of firmware files floating around the forums here, you might be able to flash one if one works with your phone.
Thanks, I'm surely gonna do it if the bootloader can be locked back.
Frija App should be able to help you download the correct firmware. Just be sure to install the Visual C++ Runtimes (2008 and 2010) before launching the app.
Hi i am new here and need help with updating my Samsung note 9 i still have a baseband N960USQS1ARI5 but will like to update to the latest firmware. i'm using an unlocked AT&T phone. can anyone guide me? I'm not sure if updating the firmware will lock the phone and the process to update, do I just update the firmware in stages as the updates were released till i get to the latest update or can i update straight up to the latest? I am thinking of using Odin, is that a safe way to do this? any help will be appreciated. Lastly, can I change from the AT&T firmware to lets say a none carrier based firmware so as to stop seeing the AT&T logo on boot up? Maybe switch to a firmware that supports global or international? Does anyone have links to an unlocked firmware update i can use, as well? Please help!
I must state that the phone never updates automatically as it always says the software is up to date.
mtrackerbeyond said:
Hi i am new here and need help with updating my Samsung note 9 i still have a baseband N960USQS1ARI5 but will like to update to the latest firmware. i'm using an unlocked AT&T phone. can anyone guide me? I'm not sure if updating the firmware will lock the phone and the process to update, do I just update the firmware in stages as the updates were released till i get to the latest update or can i update straight up to the latest? I am thinking of using Odin, is that a safe way to do this? any help will be appreciated. Lastly, can I change from the AT&T firmware to lets say a none carrier based firmware so as to stop seeing the AT&T logo on boot up? Maybe switch to a firmware that supports global or international? Does anyone have links to an unlocked firmware update i can use, as well? Please help!
I must state that the phone never updates automatically as it always says the software is up to date.
Click to expand...
Click to collapse
to your last point, at&t phones are notoriously bad at updating
factory unlocked phones will remain forever unlocked and phones unlocked that are bespoke to a specific carrier will also remain unlocked even with Odin flashes providing that the method employed to unlock it was legitimate. Some unlock methods employ root and only trick the phone into thinking its unlocked. Well, once you remove root, and thusly the trick, the unlock is gone. I have ran across rare examples where the person swore up and down that they unlocked their phone with a legit unlock code and that it relocked to a carrier once the sim was inserted and initial programming completed, but i dunno. Sounds weird to me, but every person who said this also said that the phone locked to a carrier other than the one it came from originally. Take that for what its worth, but i still mostly stand by the first couple lines of this section of my diatribe
If you want the at&t crap gone, get the N960U1 firmware and flash it in Odin. You will need the modified version of Odin to flash it so it can ignore the 255 errors the phone throws up from flashing firmware for a carrier (or, in this case, no carrier) on to a phone that it wasnt originally designated (not designed) for
go to sammobile.com/firmwares, get the info for the firmware you want to d/l, get the Frija tool or Samfirm and download the firmware thru one of those as theyre literally 5x faster and flash it
mtrackerbeyond said:
Hi i am new here and need help with updating my Samsung note 9 i still have a baseband N960USQS1ARI5 but will like to update to the latest firmware. i'm using an unlocked AT&T phone. can anyone guide me? I'm not sure if updating the firmware will lock the phone and the process to update, do I just update the firmware in stages as the updates were released till i get to the latest update or can i update straight up to the latest? I am thinking of using Odin, is that a safe way to do this? any help will be appreciated. Lastly, can I change from the AT&T firmware to lets say a none carrier based firmware so as to stop seeing the AT&T logo on boot up? Maybe switch to a firmware that supports global or international? Does anyone have links to an unlocked firmware update i can use, as well? Please help!
I must state that the phone never updates automatically as it always says the software is up to date.
Click to expand...
Click to collapse
Hi, my phone is a Note 9 ATT factory unlocked.
Below is the link for my post
I've updated my phone using the link , and still unlocked and working Ok.
I hope it can help you .
https://www.google.com/amp/s/forum....note-9-att-rom-update-sept-2019-t3979303/amp/