Database Develop

Can anyone prove locked bootloader?

I've read a ton of posts on this topic and I understand the general consensus is that the bootloader is locked, but has any developer confirmed this? I asked Chainfire about a cf auto-root and he just assumed the bootloader was locked. People assumed this about the tmobile variant as well and apparently tmobile didn't lock the bootloader as people are rooting as we speak. I just wondered if it was even possible to check without the firmware being released.

johnnyutah22 said:
I've read a ton of posts on this topic and I understand the general consensus is that the bootloader is locked, but has any developer confirmed this? I asked Chainfire about a cf auto-root and he just assumed the bootloader was locked. People assumed this about the tmobile variant as well and apparently tmobile didn't lock the bootloader as people are rooting as we speak. I just wondered if it was even possible to check without the firmware being released.
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I would but I don't know how. I tried to Google it but didn't come up with a whole lot of info.

johnnyutah22 said:
I've read a ton of posts on this topic and I understand the general consensus is that the bootloader is locked, but has any developer confirmed this? I asked Chainfire about a cf auto-root and he just assumed the bootloader was locked. People assumed this about the tmobile variant as well and apparently tmobile didn't lock the bootloader as people are rooting as we speak. I just wondered if it was even possible to check without the firmware being released.
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Need to try and flash something, but theres nothing out to flash lol.... Also ATT 99.9 percent of the time like Verizon locks their BLs, there were reports that TMO was locking it's as well but it seems the initial batch is unlocked, could change but I would count on the ATT variant being unlocked.

Guys, it's LOCKED. No, I can't confirm it, but why would AT&T say they don't support unlocked bootloaders and then ship the S5 with an unlocked bootloader? I think not.

MattMJB0188 said:
Guys, it's LOCKED. No, I can't confirm it, but why would AT&T say they don't support unlocked bootloaders and then ship the S5 with an unlocked bootloader? I think not.
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Pretty much this, which means no root, till a new exploit is found...but how many actual ATT devs are there that planned on getting the S5

djkinetic said:
Pretty much this, which means no root, till a new exploit is found...but how many actual ATT devs are there that planned on getting the S5
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Probably not a lot. When the S4 had its bootloader patched last year development went down the drain, and fast. Everyone kept saying that the developers will unlock it, and they NEVER DID.
I am not trying to dis-respect any developers on here, but I do not like safestrap. Its no where as good as CWM-Recovery. I also loved flashing AOSP roms.

MattMJB0188 said:
Guys, it's LOCKED. No, I can't confirm it, but why would AT&T say they don't support unlocked bootloaders and then ship the S5 with an unlocked bootloader? I think not.
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What you say makes perfect sense, I'm just saying that it would be nice to have it confirmed. With all of the back and forth between tmobile and their "Uncarrier" promotions and att's counter marketing, maybe att changed their minds to help their image, who knows, it's just a wishful dream I guess. Hopefully when sammobile makes the firmware available, someone can get Chainfire the recovery partition and he will create a cf auto-root for us to try.

johnnyutah22 said:
What you say makes perfect sense, I'm just saying that it would be nice to have it confirmed. With all of the back and forth between tmobile and their "Uncarrier" promotions and att's counter marketing, maybe att changed their minds to help their image, who knows, it's just a wishful dream I guess. Hopefully when sammobile makes the firmware available, someone can get Chainfire the recovery partition and he will create a cf auto-root for us to try.
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Here's the problem though, if the BL is locked, cf root will most likely either not flash or not boot according to Chainfire, and if either of these happens not only are u without root, but also the knox warranty flag is tripped and your warranty is voided...unfortunately someone has to be willing to take one for the community to confirm all this.

djkinetic said:
Here's the problem though, if the BL is locked, cf root will most likely either not flash or not boot according to Chainfire, and if either of these happens not only are u without root, but also the knox warranty flag is tripped and your warranty is voided...unfortunately someone has to be willing to take one for the community to confirm all this.
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Isn't that always the case with an unknown new device? I don't think xda would exist if people weren't willing to take some risks.

Looks like Chainfire is in irc looking for some att testers for auto-root. http://forum.xda-developers.com/showthread.php?t=2696537&page=23

A71 SM-A715F/DS and A-716U questions

is the unlocked A-716U rootable using magisk and does anyone think there will be development on it(ie Custom recoveries ? One last question one this specific model; assuming root is possible on unlocked would it be possible to get a carrier locked version (cost saving) and reflash firmware similar to oneplus's MSMtool?
lastly is the A71 SM-A715F/DS root-able with TWRP support?
Thank you
ps
I will also contribute to bounties
everyone is going to say/think "search the forum!!!" but unfortunately the posts available dont list specific model numbers when talking about successful root/custom recovery,.

U.S. variants usually can't be unlocked and therefore you can't install custom stuff like magisk patched files.
That used to be the case until recently that a person was offering bootloader unlock as a service to many 2019 and onward devices, as you can see here: https://forum.xda-developers.com/t/sampwnd-usa-model-bl-unlock-info-u-u1-w.4201689/
But, you would have to ask if the A71 is supported. It probably would need to be tested, but the owner of the thread was quite confident that it could be possible.

ShaDisNX255 said:
U.S. variants usually can't be unlocked and therefore you can't install custom stuff like magisk patched files.
That used to be the case until recently that a person was offering bootloader unlock as a service to many 2019 and onward devices, as you can see here: https://forum.xda-developers.com/t/sampwnd-usa-model-bl-unlock-info-u-u1-w.4201689/
But, you would have to ask if the A71 is supported. It probably would need to be tested, but the owner of the thread was quite confident that it could be possible.
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Oh okay, so there is no MSMtool like with oneplus devices where you can just change to international firmware? If so if there an international 5g version of the a71 (any a-series) with 5G? sorry the model/SKU's for samsung devices is confusing and there is an insane amount of them.

sixisixsix said:
Oh okay, so there is no MSMtool like with oneplus devices where you can just change to international firmware? If so if there an international 5g version of the a71 (any a-series) with 5G? sorry the model/SKU's for samsung devices is confusing and there is an insane amount of them.
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I'm sort of guessing that's the Odin equivalent of Samsung devices, not sure I've never owned a OnePlus device.
You can use Odin to flash different firmware on the device as long as it's the same SoC. For example, I've flashed Galaxy S9+ Unlocked firmware on my T-Mobile Galaxy S9+. One is variant SM-G965U and the other is SM-G965U1. However on this case, both firmware were US. One was unbranded U.S. firmware and the other was T-mobile branded firmware. I've also flashed Poland firmware on my Mexican A71, they're both model SM-A715F on this case.
I don't know if there's an international variant of the A71 5G. I guess you'll have to look that part up on your own. I think there is though.

The MSM tool enable users to take a carrier locked oneplus device and unlock it among other things. can odin unlock bootloaders ?

sixisixsix said:
The MSM tool enable users to take a carrier locked oneplus device and unlock it among other things. can odin unlock bootloaders ?
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Not really. Odin can only flash firmware, either stock or custom (you use it to flash TWRP and then basically everything else you flash with TWRP).
And no, Odin doesn't do any bootloader unlocking, any unlocking is done with the device itself. But as I mentioned, U.S devices aren't unlockable out the box.

ShaDisNX255 said:
Not really. Odin can only flash firmware, either stock or custom (you use it to flash TWRP and then basically everything else you flash with TWRP).
And no, Odin doesn't do any bootloader unlocking, any unlocking is done with the device itself. But as I mentioned, U.S devices aren't unlockable out the box.
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when you say "out of the box" do you mean there is NO possible way to unlock them or it takes a process?

sixisixsix said:
when you say "out of the box" do you mean there is NO possible way to unlock them or it takes a process?
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There is no possible way to do it... for free as of now. If you want to unlock the U.S. variant you have to do it via the paid service I pointed out and thats only IF it works (as I mentioned, its been untested on the A71)
In comparison, you can buy the F variant, turn it on, head to developer settings and select OEM unlock and then unlock the bootloader.
If we ignore the paid service, sampwnd, that I pointed out in my other response then it is impossible to unlock the bootloader of the US variant and therefore, impossible to root.

ShaDisNX255 said:
There is no possible way to do it... for free as of now. If you want to unlock the U.S. variant you have to do it via the paid service I pointed out and thats only IF it works (as I mentioned, its been untested on the A71)
In comparison, you can buy the F variant, turn it on, head to developer settings and select OEM unlock and then unlock the bootloader.
If we ignore the paid service, sampwnd, that I pointed out in my other response then it is impossible to unlock the bootloader of the US variant and therefore, impossible to root.
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how much does the paid service cost and do you have a link? i didnt see you mention it before. also do you have the aseries discord invite or telegram?

sixisixsix said:
how much does the paid service cost and do you have a link? i didnt see you mention it before. also do you have the aseries discord invite or telegram?
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I'm not really sure about the cost as I've never used the service myself, but I know the person running the thread is very reliable
Link: https://forum.xda-developers.com/t/sampwnd-usa-model-bl-unlock-info-u-u1-w.4201689/
There are a few A71 groups on Telegram, you can just search with @A71 on there, most groups are public

General [CLOSED][SamPWND] Bootloader Unlock [S21/S21+/S21U - U/U1/W]

Note: This Thread is @svetius Approved!
NOTE: Thread locked and link removed until OP returns
SamPWND Bootloader Unlock Service
It is now possible to unlock the bootloader of USA/CAN Samsung S21 Models!​
Note2: This is an informational thread that links to a paid service. Paid service is not a service provided by XDA.
The service described in this thread is simply to provide a remote service that will unlock the bootloader on USA Samsung devices released from the S10 and newer devices. This includes S10, N10, S20, N20, S21, Flip/Fold models, Tab S7 etc. devices which typically will have the letter U, U1, W or in some carrier specific cases might have a different letter, for example, N976V is Verizon N10! 5G model which is also unlockable. This service is not for Exynos variants or China/HK variants that are already unlockable by default.
Due to the nature of this service, there is no exploit that exists. It is also device specific so it is impossible to release any sort of exploit or method that would work on every device due to it being device specific. I will explain more of the process below but please understand that individual files are needed for me to purchase to unlock your devices and of course that is why this service is not able to be provided for free. You all know from my past experiences and posts that if I could provide a free method I would have already done so.
Spoiler: Process
1. First you should be sure to read the FAQ's and all other information on the website and in this thread etc. then be 100% sure that unlocking is what you want to do. Read the notes/disclaimers, refund policy, etc. etc.
2. If you decide unlocking through this service is what you want to do, proceed to the website REMOVED and in the menu go to the "Purchase" tab.
3. Be sure to read each step clearly and enter in accurate information. Form is designed to help walk you though getting your OneUI version, bootloader version, the correct DID etc. etc. It also includes a brief description of the refund policy as well as a signature box to sign just iindicating that you have read everything and agree. This is also done so that if you are on a device or a specific update/bootloader version that cannot be unlocked then it will tell you so and will not allow you to make a payment or will show 0$. If you can unlock your device, it will show you the price and allow you to make a payment once you have completed the form.
4. It will take 1-2 business days (not counting weekends, holidays, as well as life events such as if I get sick or life happens or my source is not available at the time etc.) to have the payment hit my bank account at which time I will send to my source to obtain your unlock "token."
5. Once token is received, I will proceed to message you on Telegram or Discord (whichever you prefer, you have the option to leave your username for both when filling out the form) and will send Instrucitons in a txt file along with modded ODIN (in case you don't already have it) as well as your unlock token so that you can unlock your device at your earliest convenience!
Spoiler: Notes
I wanted to try and keep the XDA threads short and clean so any notes or FAQ's you have questions for I suggest you view the website including the FAQ's first as well as the support group on TG is a good place to talk to others who have already unlocked or planning to unlock using this service as well as you can ask in this thread as usual.
The "Purchase Form" on the website when filled out correctly based on your device will tell you if your device is unlockable or not so fill that out first and if unlockable it will tell you the price at the end of which you can either pay or not depending on what you decide!
Spoiler: Disclaimers
-IMPORTANT - Do NOT blindly update if you are unlocked already or if you plan to unlock your bootloader via this service. Sammy has incremented the bootloader and updated some devices to OneUI 3.1 which breaks the BL unlock. Devices still on the same rev (i.e. S20 at time of this writing) then you can just flash back an older OneUI firmware and device will be unlocked again. If you update to OneUI 3.1 on new bootloader version then you likely will lost the unlock and can't downgrade (i.e. S20FE on rev2/3, N20 and S21 Models on rev2). That said, there are some devs posting some "safe" update files to allow you to update to latest firmware without losing your unlock so before taking any updates always check in the support group first. You have been warned!
- This method will unlock the bootloader allowing you to use custom firmware, custom kernels and everything else that is allowed with an unlocked bootloader including Magisk root.
- Please read the policies on the website including refund policy. Proceeding with the unlock service assumes you have read everything including the policies and decided to continue with the service.
- This DOES NOT unlock your SIM or carrier/network. it is NOT a SIM unlock.
- This process modifies the steady partition. Therefore if you end up messing with this partition or get another remote service such as combo flash or sim unlock service etc. that messes with the steady partition then you might overwrite the unlock and essentially relock the bootloader. Chances are if you have no idea what a steady partition is then I would not worry about it at all.
- Knox will be tripped. This means apps that rely on Knox flag not being tripped will no longer work i.e. Secure Folder, Samsung Pay etc.
- Once the device is unlocked, if for whatever reason it is locked again then it cannot be unlocked anymore. So make sure that once you unlock the bootloader that this is the choice you want to make and you want it unlocked.
- This service is strictly to unlock the bootloader. It is not a root thread, ROM service etc. What you choose to do with your device after being unlocked is your choice. Once device is unlocked, this thread/service will have served it's purpose. Links to other threads sources will likely be provided in another post just so users who are unlocking will have an easy reference and to keep this thread clean.
Spoiler: Feedback/Complaints
If you have any complaints about the service or want to provide feedback then please do so via PM and/or the contact page on the website or via TG/Discord if we have already spoke there etc. Do not bother the forum moderators with complaints regarding the service itself because they are not affiliated with the service and I simply got permission to post about and talk about the service. I assume this isn't something usually granted but I'd like to believe due to me being a long time member, contributor, developer and moderator that an exception was made. Keep in mind, if this somehow get's out of hand or goes south I am sure I will end up having to delete this thread. Let's not let it get to that point!
Spoiler: Purpose
- This is not a get rich quick scheme or something to make money. Trust me, I wouldn't even bother with this if my purpose was to make money because it is not very lucrative to say the least. There is cost involved with purchasing the actual unlock, site costs, payment gateway fees to be able to accept payments, time and effort to process the unlocks etc. so take all of that into consideration when weighing the cost.
- It has been years since USA models had a device that could be unlocked. I have spent countless weeks researching security since the S8. I released root methods for S8 devices as well as the S9/N9 devices at a later time which took a long time to figure out and that was just a basic root method. I was skeptical at first about this unlock process but trusted my sources and when I first unlocked my device I did various testing and concluded it is legit! At this time no one else knew about it, couldn't talk about it, etc. By word of mouth (until now), many devs/users have unlocked their device using this service. TWRP threads have popped up, some custom ROM threads have started popping up etc. The hope of going public is we get a lot more users purchasing and unlocking their devices (when it otherwise is not possible) and drives the development for USA devices.
XDA is the ONLY place I have published this post and would like to keep it that way. You are NOT allowed to create your own posts in regards to this service and if I see any other posts around this service I will ask to have it removed. You can however link to this XDA post if anyone has questions as to how your device was unlocked.
Spoiler: Website
Note: If you frequented the website before, I have removed the "forum" function from the website since we can discuss everything here on XDA in this thread so there is no need for a forum to be attached to my website any longer. Registration on the website is not required for anything. You can view the shop and purchase the service or view the ROM's section to see some of my SamPWND ROM's and download them etc. if you like all without registering or anything.
REMOVED​

mine...

I wasn't sure where to ask this question, if I need to go somewhere else, please let me know. I am considering getting my ATT Bootloader unlocked - but I have a question - once the bootloader is unlocked, what happens when therre are new firmwear releases? Are we able to update when new Firmware is released? Or will that return the locked bootloader? Just want to be sure I understand potential issues I might have...
Thanks

Geekser said:
I wasn't sure where to ask this question, if I need to go somewhere else, please let me know. I am considering getting my ATT Bootloader unlocked - but I have a question - once the bootloader is unlocked, what happens when therre are new firmwear releases? Are we able to update when new Firmware is released? Or will that return the locked bootloader? Just want to be sure I understand potential issues I might have...
Thanks
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It all really depends. Nothing is forever. Only way a update will break things is if samsung updates their security but doesnt usually happen often.
Thaat said, theres ways to update safely so I wouldnt just blind flash updates until its confirmed one way or the other. Usually its important if they increment the BL because then u cant flash older firmwsre.

Welp, I have the desire to get this done sometime soon. I just keep having busy weekends! But I wasn't aware that I'd be able to flash BL update packages so long as they don't relock the BL. Any idea on where I could find out if the next software update contains a BL file that'd relock me? If so, then I'd be doing this ASAP lol.

NippleSauce said:
Welp, I have the desire to get this done sometime soon. I just keep having busy weekends! But I wasn't aware that I'd be able to flash BL update packages so long as they don't relock the BL. Any idea on where I could find out if the next software update contains a BL file that'd relock me? If so, then I'd be doing this ASAP lol.
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every update has bl files

elliwigy said:
every update has bl files
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Thanks for your repsponse to my previous question - Of course, there is no way to know if and when Samsung will update/increment the bootloader, but if I am not mistaken, it doesn't happen very often. That being said, it sounds like as long as I am careful about updating - waiting to make sure the Bootloader hasn't been updated that way which prevents going backward - I most likely won't lose "the unlocked" when I update new firmware.
One last question (probably a dumb one) so if everything checks out with the Bootloader when new firmware is released, I assume that we can just use Odin to flash the updated firmware - is that correct?
- By the way, thanks for your help with this.

Geekser said:
Thanks for your repsponse to my previous question - Of course, there is no way to know if and when Samsung will update/increment the bootloader, but if I am not mistaken, it doesn't happen very often. That being said, it sounds like as long as I am careful about updating - waiting to make sure the Bootloader hasn't been updated that way which prevents going backward - I most likely won't lose "the unlocked" when I update new firmware.
One last question (probably a dumb one) so if everything checks out with the Bootloader when new firmware is released, I assume that we can just use Odin to flash the updated firmware - is that correct?
- By the way, thanks for your help with this.
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Yeah, but each software update has a bootloader update included, hence why I was asking where I could find out whether or not flashing that file via Odin would end up relocking the bootloader... I suppose we'll have to just check around here on the XDA forums to find out whether or not the updates would be flashable whilst having your BL unlocked... =(... So we may have to wait a few months until we start seeing posts discussing exactly that...that is, of course, unless Samsung publicly announces whether or not the BL update will have security changes... But being that I haven't had a Samsung phone for the last decade, I'm not really sure if they'd ever announce that information... But hey, that's the one question that's holding most people back from getting a bootloader unlock ¯\_(ツ)_/¯

Geekser said:
Thanks for your repsponse to my previous question - Of course, there is no way to know if and when Samsung will update/increment the bootloader, but if I am not mistaken, it doesn't happen very often. That being said, it sounds like as long as I am careful about updating - waiting to make sure the Bootloader hasn't been updated that way which prevents going backward - I most likely won't lose "the unlocked" when I update new firmware.
One last question (probably a dumb one) so if everything checks out with the Bootloader when new firmware is released, I assume that we can just use Odin to flash the updated firmware - is that correct?
- By the way, thanks for your help with this.
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no.. dont update.. they just incremented to rev2.. looking into it

A newbie question.
If I relock the bootloader will the knox trip be reversed as well ? or is it a thing for ever like everyother bootloader unlock for samsung?

Techvir said:
A newbie question.
If I relock the bootloader will the knox trip be reversed as well ? or is it a thing for ever like everyother bootloader unlock for samsung?
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you cannot reset knox.. its a physical efuse

elliwigy said:
elliwigy said:
you cannot reset knox.. its a physical efuse
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Glad you got this service up and running. This is just awesome. Should get this stickied because I just found it now and of course was not looking for it because I would not have thought a bootloader unlock was available. Eitherway... off to sampwned.com!
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@elliwigy Food for thought: Add on service: TWRP Install?
I would feel a lot better about $150.00 if I at least got a free TWRP install. I mean I bought a $60.00 screen protector and got it installed for free. Unlock phone and get free TWRP install. Advertise it as a limited time deal.
Either way I think it would be a great add-on service even if a small fee applied.

How long does it usually take to get a response back? I got the first email like 4 days ago, this is normal?

Like I'm waiting for the unlock code or whatever it is I use to unlock the bootloader, it's been 5 days now?

Aurey24 said:
Like I'm waiting for the unlock code or whatever it is I use to unlock the bootloader, it's been 5 days now?
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send me pm with your email or order number or message me on telegram.

elliwigy said:
send me pm with your email or order number or message me on telegram.
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Sent pm

Aurey24 said:
Sent pm
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To you and others who fill out the form:
If you fill it out and it doesnt give you the option to pay or says 0$ then that means your device is not currently unlockable. Hence why you woukdnt get any response from me since I respond to those that are unlockable and have submitted payment.
I dod add yesterday if you are not unlockable itll give you a message saying you cannot unlock at this time to further clarify it.
I will update OP tonight as much has changed since first launching/posting SamPWND services.

Before I buy just want to make sure my bootloader is unlockable. My baseband version is G998U1ES4BULE

joelstitch said:
Before I buy just want to make sure my bootloader is unlockable. My baseband version is G998U1ES4BULE
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nope

Question ordering an s21 ultra from tmobile today. questions on bl unlock and root

it will be a day or two after we place the order in a few hours from now. (thursday june 17th 2021).
01 do i need to flash the newer U1 firmware with the v2 bootloader first then do bl unlock and root for custom roms?
02 since we will be in a 2 year contract maybe i should just keep tmobile original firmware and just bl unlock and root that firmware?
03 what is the best way to do it since i know we will be with tmobile for 2 more years?
04 samsung pay wont work and what else?
05 knox will be tripped forever?

en11gma said:
it will be a day or two after we place the order in a few hours from now. (thursday june 17th 2021).
01 do i need to flash the newer U1 firmware with the v2 bootloader first then do bl unlock and root for custom roms?
02 since we will be in a 2 year contract maybe i should just keep tmobile original firmware and just bl unlock and root that firmware?
03 what is the best way to do it since i know we will be with tmobile for 2 more years?
04 samsung pay wont work and what else?
05 knox will be tripped forever?
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I'm not sure about your local network provider policies so can't say about points 1 to 3. Points no 4 and 5 however are quite simple to answer:
04 samsung pay wont work and what else? Most banking apps, payment gateway apps, some streaming services and a large number of services requiring some kind of authentication or DRM will stop working if they detect that your phone is rooted. Most of these can be bypassed even when rooted using Magisk hide. But Magisk development in the future is uncertain right now, so don't put all your eggs in that basket. Some of these apps may work now, but lose functionality later, unless you unroot.
Samsung Pay is gone forever once you root. As well as Samsung Pass. No way to get these back again as far as I know.
You also won't get OTA updates anymore and will have to flash newer firmwares manually.
Warranty is gone too, unless your country has special laws against this. Recently a forum member posted his experience where Samsung wouldn't even perform a paid repair for a screen replacement. Their reason was apparently because he had rooted his phone and voided his warranty. Think about that - they wouldn't even repair his phone, or sell him the parts, even if he was willing to pay! I'm not going to get into whether that's justified - but it is what it is. Be warned.
If you're willing to take the risk and Samsung Pay etc doesn't mean much to you, and features that rooting bring mean way, wayyyyy more to you, even at the risk of losing warranty, proceed with rooting after careful consideration.
05 knox will be tripped forever? Yes. Once you root, this will be irreversibly, permanently, irrevocably, unrecoverably, soul-stone permanently - be tripped forever. Nothing short of a motherboard replacement will get that flag up again.

is there a proper way about doing it when we receive the phones?
i mean will the phones try and auto update when i insert the sim card and power phone on therefore stopping the phone from being bl unlocked and rooter on stock firmware?
do i need to stop this from happening?

en11gma said:
is there a proper way about doing it when we receive the phones?
i mean will the phones try and auto update when i insert the sim card and power phone on therefore stopping the phone from being bl unlocked and rooter on stock firmware?
do i need to stop this from happening?
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There's a paid service for unlocking bootloaders on certain US Snapdragon devices. If you update to the March Security Patch or later the bootloader can't be unlocked. You can turn off the Auto Update function. There are a number of features you'll lose. Warranty (Knox will be tripped), Samsung Pay and Pass. You will also lose Secure Folder and Samsung Health however they may be able to get restored. All data is lost as well as any option to update the device and expect the bootloader to remain unlocked. You can review the details here.
[Android][UNSAMLOCK] Bootloader Unlock for Samsung US/Canada Devices
This thread is @svetius approved Important notice: Do not update to April 2023 security update (XXXXXXXXXXWCX) or later. Examples: G998USQS6EWCA, N986USQU4HWD1. Samsung has patched the bootloader unlock again on those updates. NOTE: The OneUI...
forum.xda-developers.com

if this is T-Mobile US (or any US snapdragon version including unlocked, network free) you'll only be able to unlock your bootloader via the above mentioned type of method which isn't cheap as I understand it.

Personally I would need to see a custom rom with a whole lot of functionalities I would use before I opted for this method. If rooting your device is a priority it would seem to make more sense to aquire a Snapdragon or Exynos variant with an unlocked bootloader. The reason for buying a US Branded device, besides a generous trade in allowance are carrier features. If you root a carrier device you'll lose a number of these advantages.

varcor said:
Personally I would need to see a custom rom with a whole lot of functionalities I would use before I opted for this method. If rooting your device is a priority it would seem to make more sense to aquire a Snapdragon or Exynos variant with an unlocked bootloader. The reason for buying a US Branded device, besides a generous trade in allowance are carrier features. If you root a carrier device you'll lose a number of these advantages.
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i thought if i bl unlock and root a stock firmware it just allows me to use twrp to make full backups so i can restore later and the root is for like hotspot stuff.
i know root disable samsung pay and something else but i thought all the carrier stuff still worked correctly

en11gma said:
i thought if i bl unlock and root a stock firmware it just allows me to use twrp to make full backups so i can restore later and the root is for like hotspot stuff.
i know root disable samsung pay and something else but i thought all the carrier stuff still worked correctly
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You should inquire about call features with the developer before you decide. IMHO you're sacrificing a lot of features for a hotspot.

Question Unlock S21 Ultra Bootloader Unlock - SM-G998U

Has anyone used ADB and Fastboot Tool to unlock there bootloader on a US Verizon S21 Ultra -
SM-G998U
Baseband version: G998USQS4AUFD
I found this on :
How to Unlock Bootloader on Samsung Galaxy S21 Plus 5G? OEM Unlock!
Hey, there in this guide, I will show you the easiest method to Unlock Bootloader on Samsung Galaxy S21 Plus 5G. This smartphone was recently launched,
www.rootingsteps.com

Verizon devices do not and likely will never have an unlockable bootloader. Can probably be said about any Samsung phone bought through Verizon but 100% will not work on Verizon s21 ultra. If you purchase the phone through Samsung, carrier unlocked, the bootloader can most likely be unlocked (assuming it hasn't had firmware updates past v1 I think)

I just got an unlocked s21 ultra from Samsung I was under the impression I still couldn't unlock? Which digit in the software name Is bootloader version? 5th from the right? If so that means I have bootloader v4

Seems like bootloader v4 is not unlockable or ever will be. Might sell might phone and buy an unlocked version.

U and U1 models *can* be bootloader unlocked, but only if they're on bootloader v1

Yep. You'll have to wait until your next phone before you can unlock the bootloader since you're not on the first bootloader version with your S21U =/.
Due to an unfortunate event, I'm in the same boat. Luckily enough for the both of us, we can hang onto this phone for now, pay it off, and then do an exchange with Google in order to get the Pixel 6/6 Pro for $500-$600 less than it's rumored retail price of $1100-$1200 (that's for the 6 Pro; the 6 regular will probably be like $200-$300 less).
Hopefully that works out as my S21U is the least reliable phone that I've ever used (so many features don't work and I have to restart it multiple times per day to keep it working, otherwise certain apps stop functioning even when force closed and I lose cell service until I reboot). I've even done a full device wipe and reinstalled Android and I still have the same problems. I thought that my LG V20 from 6 years ago was bad, but my S21U takes the cake there with how instable it is... But hey, there have been tons of posts here with others facing similar problems. It has taught me that Samsung tends to always make manufacturing mistakes... I mean, remember the good ol' Note 7? That phone was super nice until it started a bonfire LOL.

I am not having that many issues with it. I am curious how it would run rooted with a different ROM on it.

I haven't had any problems with mine either. I've only had it about a week but I would consider myself a power user when it comes to my phone's and have run it through just about everything

iBowToAndroid said:
U and U1 models *can* be bootloader unlocked, but only if they're on bootloader v1
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How can you tell?

Mathias1378 said:
How can you tell?
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Bootloader level is the 5th character from the end, in either the Build Number or Baseband Version

iBowToAndroid said:
Bootloader level is the 5th character from the end, in either the Build Number or Baseband Version
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Click to collapse
My Baseband version is G998USQS5CVGA

Mathias1378 said:
My Baseband version is G998USQS5CVGA
Click to expand...
Click to collapse
Well then you already know what your bootloader level is

iBowToAndroid said:
Well then you already know what your bootloader level is
Click to expand...
Click to collapse
So is mine Bootloader v5 or v1??

Mathias1378 said:
So is mine Bootloader v5 or v1??
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Click to collapse
Where is there a 1 in your Baseband Version....?