[Q] t mobile GS5 bootloader - Galaxy S 5 Q&A, Help & Troubleshooting

im seeing all these kernels and AOSP roms on the for the phone but i was almost certain that an unlocked bootloader was needed to flash these, i want to flash new kernels but im afraid to brick my phone, ive spent the last few days trying to see how its possible seeing as last i checked our bootloader was locked, but every video and thread says to just flash it and itll be ok, sorry for such a noob question i just really dont want to brick my phone and pay the 150 bucks to replace a "lost phone"

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[POLL] Let's have a head count

Alright,lets have a head count on how many users are able to unlock their bootloader and those who cant..
This would help our developers what rom to make..is it for stock or custom..
I for one expect that there are alot of users who uses custom kernel..but as time passes by,people also buy new phones and leave the x8 forum for good..
And now,more and more people are still buying new x8s..and we know that those people cant unlock their bootloader..
so if you can lock your bootlaoder because you have manufacture date of 11w26 below, vote yes
or
you cant unlock your bootloader because your manufacture date is 11w26+
the point of this thread is to know how many are using stock kernel because they cant unlock their bootloader and how many are using custom kernel because they can lock their bootloader..
i understand that their are a lot of people who can unlock their bootloader..
but as of now, more and more people are buying new x8s,tried unlocking their bootloaders and end up hard bricking their device..
i really notice that the x8 forum has two FACTIONS...
a faction of people who uses custom kernels and people who uses stock..
YES, we are divided...

S5 tmobile g900t - build FOJ4 Help!

Ok lets prefacethis with the fact that im a very new user to the whole andriod rooting community. so il need someone to talk slow and show me the way.
Alright i recently bought an unlocked tmobile g900t build foj4 (edit* its also running 5.1. lollipop) which im am using on the rogers network in canada. ive just started to play around and try and get my phone rooted as i like the thought of it
the problem is i just need help navigating and installing all this ****.
i have twrp installed on the device (tripped knox already and dont care regardless, im not getting any warranty **** done on the phone anyway), anywho it wouldnt let me install anything in the recovery menu, saying the file couldnt be verified or something to that effect
ive found this post but i need a step by step for it as my tiny mind cant process whats happening in it well enough.
http://forum.xda-developers.com/tmo...t/how-to-update-to-g900tof6-5-1-1-pc-t3141404
All help is greatly appreciated thank you to all that read this post

Need help w/ Samsung G900V Galaxy S5 *bootloader/rooting*

I've been a HTC phone person for a while and thinking of switching to a S5 my only problem is I hear the bootloader is locked on VZW Phones?
Now see I'm buying a NEW unlocked G900V Samsung S5 off ebay and gonna trim my sim from my current phone to fit in it, but before I do this I want to unlock the bootloader and then root.
I dont have the phone yet, but its sold as brand new, and I dont have the model, cid, android version, any sort of info until I have the device in my hands.
I watched a few videos saying its easy to unlock the bootloader and root and most people are using touch philz bootloader, and I've read a lot on there saying there is not bootloader access on this device and only a safestrap recovery option
someone said to use geohots towelroot but then someone said he works for google now and its not supported anymore after june 2014 or some ****?
also I seen this video showing me a pretty quick method to unlock the bootloader/root
https://www.youtube.com/watch?v=zKrFxuA5apg
but noticed the video and site was posted before june so Idk if that method still works or not?
any one in this thread know whats the best method to go for and what to do on what works and what I can do with this device or not?
EDIT: found this saying the bootload has been unlocked http://www.xda-developers.com/verizon-galaxy-s5-bootloader-has-been-unlocked/ but still cant find any info on how to do this been searching for 2 hours but also on 2 hours of sleep so idk any help would be obliged
You'll need to find out the CID of the device
Ask the seller to check for you.
If it starts with 11 then you cannot unlock the bootloader. If it starts with 15 then you can unlock it.
Ok I'll try and ask but how do you even find out the CID of the device in case they ask, because I am pretty tech savvy and I don't even know. Samsung phones and CID numbers are all new to me.
I think I read someone where that the CID number changes if u use root on a post somewhere am I wrong ?
anyways if its not a 15 the phones pretty much worthless?
Bump: I asked the sellers to look for me and they always tell me they can not download any apps to the phone...Where do we find this in the settings without downloading anything how can I tell if it's a genuine Samsung chip quickly and easy or not
AFAIK I think the only way is to use an app like EMMC Brickbug or to pull it via adb. There isn't a way to tell otherwise.

S5 AT&T help

Hello guys, I'm posting this for first time.
My girlfriend is having a Samsung S5 from AT&T and I want to root it as she told me system apps from AT&T are taking too much space on her phone and so I was thinking can I flash any custom rom on it?
As I see the AT&T thread separate, I want to ask some things
Does Network provider has to do something with it ?
I can flash custom rom on her phone or not?
And same odin thing works ? Like unlocking bootloader and fishing custom recovery
I have never rooted any Samsung phone ever
I'm having a oneplus and HTC.
If anyone can tell me what all do I need to do, I would appreciate it a lot .
Att version has locked bootloader .... Root is possible and there a few roms but they are all based off the stock rom just tweaked a bit ...
cpt.macp said:
Hello guys, I'm posting this for first time.
My girlfriend is having a Samsung S5 from AT&T and I want to root it as she told me system apps from AT&T are taking too much space on her phone and so I was thinking can I flash any custom rom on it?
As I see the AT&T thread separate, I want to ask some things
Does Network provider has to do something with it ?
I can flash custom rom on her phone or not?
And same odin thing works ? Like unlocking bootloader and fishing custom recovery
I have never rooted any Samsung phone ever
I'm having a oneplus and HTC.
If anyone can tell me what all do I need to do, I would appreciate it a lot .
Click to expand...
Click to collapse
You should consider two things:
1. ATT phone may be sim-locked (locked to their network), but it has nothing to do with custom firmware. This problem may be solved more or less easily.
2. ATT phone (SM-G900A) does have a locked bootloader. This is a real problem.
That's why you're limited to touchwiz-based ROMs and stock kernels.
This means, in it's turn, that you cannot have root on 6.0 and above, you cannot have custom recovery, LOS, etc.
If it was my device and I was going to use it as a smartphone (to communicate with others) on a GSM network, I'd install this ROM in unrooted variant and the latest firmware (boot, modem, kernel).
bbsc said:
You should consider two things:
1. ATT phone may be sim-locked (locked to their network), but it has nothing to do with custom firmware. This problem may be solved more or less easily.
2. ATT phone (SM-G900A) does have a locked bootloader. This is a real problem.
That's why you're limited to touchwiz-based ROMs and stock kernels.
This means, in it's turn, that you cannot have root on 6.0 and above, you cannot have custom recovery, LOS, etc.
If it was my device and I was going to use it as a smartphone (to communicate with others) on a GSM network, I'd install this ROM in unrooted variant and the latest firmware (boot, modem, kernel).
Click to expand...
Click to collapse
It's been over 2 years for her phone, unlocking bootloader won't be an issue ( we can unlock it right?) . And she will be using AT&T only because she is using family plan.
If you dare saying the real problem is locked bootloader then we can just unlock it , or I understood it wrong
cpt.macp said:
It's been over 2 years for her phone, unlocking bootloader won't be an issue ( we can unlock it right?) . And she will be using AT&T only because she is using family plan. If you dare saying the real problem is locked bootloader then we can just unlock it , or I understood it wrong
Click to expand...
Click to collapse
I believe that the following thread may help you out with this. It's S5 AT&T device specific.
https://forum.xda-developers.com/showthread.php?t=3516196
Good Luck!
~~~~~~~~~~~~~~~
I DO NOT PROVIDE SUPPORT VIA PM UNLESS ASKED/REQUESTED BY MYSELF.
PLEASE KEEP IT IN THE THREADS WHERE EVERYONE CAN SHARE

S8 Snapdrangon bootloader Q's

hi so i have a few things id like to talk about. i was wondering why it is not possible to port aosp roms to s8 snapdragon? givin its the same android version. also when i was messing around when rooting my s8 i saw that the software i had installed in the steps i went into settings and saw that i could enable oem unlock it worked and whenever i go back to that software its still enabled however i could not use any fastboot commands still. also i flashed twrp (not safe strap already have that) and now my base recovery does not show up....
kadenball said:
hi so i have a few things id like to talk about. i was wondering why it is not possible to port aosp roms to s8 snapdragon? givin its the same android version. also when i was messing around when rooting my s8 i saw that the software i had installed in the steps i went into settings and saw that i could enable oem unlock it worked and whenever i go back to that software its still enabled however i could not use any fastboot commands still. also i flashed twrp (not safe strap already have that) and now my base recovery does not show up....
Click to expand...
Click to collapse
Aosp roms requires a custom kernel to work, this requires:
1, unlocked bootloader(not possible on the snapdragon variant)
2, a custom recovery (not possible due to locked bootloader)
Just using the oem unlock option does not unlock the bootloader, more steps are required for most phones in order to unlock the bootloader, if it was that easy it would have been exploited by now, most of the guides on the snapdragon version mention that the bootloader is not unlockable.
You more than likely will need to restore the recovery through odin or something,
sofir786 said:
Aosp roms requires a custom kernel to work, this requires:
1, unlocked bootloader(not possible on the snapdragon variant)
2, a custom recovery (not possible due to locked bootloader)
Just using the oem unlock option does not unlock the bootloader, more steps are required for most phones in order to unlock the bootloader, if it was that easy it would have been exploited by now, most of the guides on the snapdragon version mention that the bootloader is not unlockable.
You more than likely will need to restore the recovery through odin or something,
Click to expand...
Click to collapse
Thanks ya I fixed it! And ya I understand there are additional steps to doing this that's why I mentioned fastboot. If you could guide me in a direction to potentially learn more about the kernals and how they work or what I would need to be good at to exploit download mode or knox whatever is required to potentially exploit the bootloader I would not give up on it im fine with wasting my time. I had recently talked to Sam help chat and they told me someone could unlock the bootloader for me (a phone company near me) I talked to a guy over the phone that said it could be possible bc they have the Samsung tools to do so but he told me to call the next day because the other tech knew more then him, so I called the next day and he said they could do it but they would get in trouble for doing so. My plan is to go in when the guy that doesn't know much is working ? and get him to unlock it. Hopefully then I could upload the software here and free the snapdragon slaves!!! If your interested in the conversations I had with Samsung and this other company I could upload the screen shots thank you for your reply!
kadenball said:
Thanks ya I fixed it! And ya I understand there are additional steps to doing this that's why I mentioned fastboot. If you could guide me in a direction to potentially learn more about the kernals and how they work or what I would need to be good at to exploit download mode or knox whatever is required to potentially exploit the bootloader I would not give up on it im fine with wasting my time. I had recently talked to Sam help chat and they told me someone could unlock the bootloader for me (a phone company near me) I talked to a guy over the phone that said it could be possible bc they have the Samsung tools to do so but he told me to call the next day because the other tech knew more then him, so I called the next day and he said they could do it but they would get in trouble for doing so. My plan is to go in when the guy that doesn't know much is working ? and get him to unlock it. Hopefully then I could upload the software here and free the snapdragon slaves!!! If your interested in the conversations I had with Samsung and this other company I could upload the screen shots thank you for your reply!
Click to expand...
Click to collapse
I've never dabbled in making kernels or anything so I'm pretty useless with that. The phone has been out for over 3 years now and as of yet there is no software method to unlock the bootloader, android devs would have figured that one out by now if it was possible, if it is possible then maybe there some extra hardware thats required to unlock the bootloader, I honestly don't know enough, I'm experienced enough to know to do certain things but I don't know the ins and out of how bootloader are coded, how the instructions are carried out. But it would defo be interesting to see if they do this for you.
sofir786 said:
I've never dabbled in making kernels or anything so I'm pretty useless with that. The phone has been out for over 3 years now and as of yet there is no software method to unlock the bootloader, android devs would have figured that one out by now if it was possible, if it is possible then maybe there some extra hardware thats required to unlock the bootloader, I honestly don't know enough, I'm experienced enough to know to do certain things but I don't know the ins and out of how bootloader are coded, how the instructions are carried out. But it would defo be interesting to see if they do this for you.
Click to expand...
Click to collapse
Ya thanks man when I talked to the inexperienced tech guy he said I could come in and we could try but I didn't want to drive there and waste my time ? but the experienced dude said I could probably find another repair place that would do it (figured it's another one of their shops he was hinting at as there are a few around me) so I will attempt to do this and hopefully some how it works and I can upload the software here not sure if flashing it would unlock anyone elses bootloaders as I expect it to be some sort of key like the HTC phones used to require and is unique to each device. When I got that oem to appear I was trying anything and everything in adb and fastboot as I suspected if we could glitch the phone in fastboot mode we could unlock it lol at least that's what I hoped for, tried upload mode kernal panic the 3 different download modes and tried to replace the Samsung download mode driver and flash the fastboot Android driver on top of it but my lack of knowledge on these things hindered me from making any progress but I believe there's a exploit in this root software that was copyed from the s9 and simply devs don't want to waste there time because they believe it is impossible. I've seen much hard thing accomplished in this dev sight hopefully the right person can figure it out and Is motivated by this post or point me in the right direction ? thanks if you read all this if I get it unlocked you will def see another post lengthy post ?

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