[Q] how to check if my bootloader is unlockeed if not how do i - Verizon Samsung Galaxy S III

i rooted my gs3 from verizon how to i flash custom roms and unlock my boot loader: note my samsung unlock padlock img boots up first and i have superuser thx

bennyboy2120 said:
i rooted my gs3 from verizon how to i flash custom roms and unlock my boot loader: note my samsung unlock padlock img boots up first and i have superuser thx
Click to expand...
Click to collapse
You need to tell us what rom version you're running? Go into settings->about phone and report the rom version.(like 4.1.2 or 4.3 etc..)

buhohitr said:
You need to tell us what rom version you're running? Go into settings->about phone and report the rom version.(like 4.1.2 or 4.3 etc..)
Click to expand...
Click to collapse
4.3

bennyboy2120 said:
4.3
Click to expand...
Click to collapse
You have a locked bootloader, and you can't unlock it.
You can only root, install safestrap, and flash touchwiz 4.3 roms only.
Sent from my SCH-I535 using Tapatalk 2

bennyboy2120 said:
i rooted my gs3 from verizon how to i flash custom roms and unlock my boot loader: note my samsung unlock padlock img boots up first and i have superuser thx
Click to expand...
Click to collapse
Are you the same user that just posted in the Xposed framework thread about not being able to install Xposed?
Sent from my SCH-I535 using Tapatalk 4

Unfortunate. This confirms what I was worried about. :/
Sent from my Ñ£×Ú$ 5

BadUsername said:
You have a locked bootloader, and you can't unlock it.
You can only root, install safestrap, and flash touchwiz 4.3 roms only.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Is this true for all 4.3 or just those with Knox? Last night I was trying to update from cm10.2 to cm11 and realised that trwp needed an update. After a some failed boots pf cm10 and 11 I decided to just go back to stock since I need it during the day..and unknowingly put the dreaded 4.3 on via odin. I understand how to get root...but what I really want is my bootloader again. Did I screw myself by putting 4.3 on? Thanks.

naikoo said:
Is this true for all 4.3 or just those with Knox? Last night I was trying to update from cm10.2 to cm11 and realised that trwp needed an update. After a some failed boots pf cm10 and 11 I decided to just go back to stock since I need it during the day..and unknowingly put the dreaded 4.3 on via odin. I understand how to get root...but what I really want is my bootloader again. Did I screw myself by putting 4.3 on? Thanks.
Click to expand...
Click to collapse
You're stuck on 4.3 now, your bootloader is locked. Using Odin to load a stock 4.3 firmware is the exact same thing.
You should've odin'd a stock 4.1.2 firmware, but it's too late now.
Sent from my SCH-I535 using Tapatalk 2

Safestrap Help
BadUsername said:
You have a locked bootloader, and you can't unlock it.
You can only root, install safestrap, and flash touchwiz 4.3 roms only.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
I'm in the same boat with 4.3 - rooted with saferoot, but when I went to download safestrap to flash the only customs roms I can (TW), I don't see a download for the SCH-i535. The closest I see is for S4. Where can I get the right Safestrap download?
Thanks for your help.

Ahartless3 said:
I'm in the same boat with 4.3 - rooted with saferoot, but when I went to download safestrap to flash the only customs roms I can (TW), I don't see a download for the SCH-i535. The closest I see is for S4. Where can I get the right Safestrap download?
Thanks for your help.
Click to expand...
Click to collapse
Here u go:
http://forum.xda-developers.com/showthread.php?t=2605648

S3 Safestrap
buhohitr said:
Here u go:
http://forum.xda-developers.com/showthread.php?t=2605648
Click to expand...
Click to collapse
Awesome. This is exactly what I was looking for. I'm pretty set on doing this now, but I'm trying to find a solid rom to flash once I get Safestrap. Any suggestions? All I've found so far are S4 roms. The Google Play Edition rom looks pretty good.
Thanks again for your help.

I hear good word from users on old&slow tw rom over on Android development section
Sent from my unknown using Tapatalk

Ahartless3 said:
Awesome. This is exactly what I was looking for. I'm pretty set on doing this now, but I'm trying to find a solid rom to flash once I get Safestrap. Any suggestions? All I've found so far are S4 roms. The Google Play Edition rom looks pretty good.
Thanks again for your help.
Click to expand...
Click to collapse
Don't flash any ROMs for the S4 onto your S3. Through safestrap you can flash almost any of the 4.3 TW (ML1) ROMs found in this section:
http://forum.xda-developers.com/galaxy-s3-verizon/development

landshark68 said:
Don't flash any ROMs for the S4 onto your S3. Through safestrap you can flash almost any of the 4.3 TW (ML1) ROMs found in this section:
http://forum.xda-developers.com/galaxy-s3-verizon/development
Click to expand...
Click to collapse
Perfect! Thanks for the info! I'm downloading Wicked Sensations for ML1 right now. Hopefully that works out.

A friend of mine root his phone but he don't know how to unlock the bootloader he is on 4.1.2

android-incredible said:
A friend of mine root his phone but he don't know how to unlock the bootloader he is on 4.1.2
Click to expand...
Click to collapse
If he rooted his Verizon S3 on VRBMF1 4.1.2, then he could use EZ Unlock v1.2 to unlock the bootloader. Or he could use Casual.

SlimSnoopOS said:
If he rooted his Verizon S3 on VRBMF1 4.1.2, then he could use EZ Unlock v1.2 to unlock the bootloader. Or he could use Casual.
Click to expand...
Click to collapse
Thanks I unlock the bootloader with the EZ-UNLOCK v1.2

android-incredible said:
Thanks I unlock the bootloader with the EZ-UNLOCK v1.2
Click to expand...
Click to collapse
Great. Now if they accidentally or intentionally take the 4.3 VRUCML1 OTA, using EZ Unlock will cause a bootloader hard brick. Please make sure your friend understands this.
Sent from my SCH-I535 using Tapatalk 4

Related

How do I unlock the bootloader on S3 running 4.2.1?

I have searched far and wide and cannot find a bootloader unlock method that will work with the Galaxy S3 that has already been updated to official 4.1.2.
The EZ-Unlock app will not work for 4.1.2 (only 4.1.1 and before)
The open1your1eyes0 method that was updated in February 2013 does not work either: http://forum.xda-developers.com/showthread.php?t=1974114
What do I do? Until I get my bootloader unlock I cannot do anything.
Phone is currently Build Number: JZ054K.I535VRBMB1
crobs808 said:
I have searched far and wide and cannot find a bootloader unlock method that will work with the Galaxy S3 that has already been updated to official 4.1.2.
The EZ-Unlock app will not work for 4.1.2 (only 4.1.1 and before)
The open1your1eyes0 method that was updated in February 2013 does not work either: http://forum.xda-developers.com/showthread.php?t=1974114
What do I do? Until I get my bootloader unlock I cannot do anything.
Phone is currently Build Number: JZ054K.I535VRBMB1
Click to expand...
Click to collapse
Try this http://forum.xda-developers.com/showthread.php?t=2046439
buhohitr said:
Try this http://forum.xda-developers.com/showthread.php?t=2046439
Click to expand...
Click to collapse
This is what I used on my phone. I watched the video and read the steps multiple times so I was comfortable.
Sent from my ASUS Transformer Pad TF300T using xda premium
Did that and it didn't work. Had to downgrade to stock 4.1.1 (K3) then use EZUnlock.
Thanks everyone for the input.
crobs808 said:
Did that and it didn't work. Had to downgrade to stock 4.1.1 (K3) then use EZUnlock.
Thanks everyone for the input.
Click to expand...
Click to collapse
crobs, im in the same boat i will let you know if i can make anny progress.
Ezunlock 1.2 is the version that works correctly.
Sent from my SCH-I535 using Tapatalk 2
Sorry to bump such an old post, but does anybody have the Ezunlock apk?
Pachonk said:
Sorry to bump such an old post, but does anybody have the Ezunlock apk?
Click to expand...
Click to collapse
dont use it if youre not on 4.1.2 or earlier. youll hardbrick your phone. its a recoverable hardbrick, but a PITA and unnecessary. What baseband are you on?
Need to unlock
Hi all.
I finally had to do a factory reset on my Verizon GS3. Poor performance and yellow factory mode text floating on screen.
I have obtained root access on the phone, however ODIN3 flashing a recovery image fails. My understanding is that I need the bootloader unlocked for that to work. Is there a reliable way to do that?
Edit: running Android 4.4.2
SCH-535
Thanks,
BigMac
BigMacAttak said:
Hi all.
I finally had to do a factory reset on my Verizon GS3. Poor performance and yellow factory mode text floating on screen.
I have obtained root access on the phone, however ODIN3 flashing a recovery image fails. My understanding is that I need the bootloader unlocked for that to work. Is there a reliable way to do that?
Edit: running Android 4.4.2
SCH-535
Thanks,
BigMac
Click to expand...
Click to collapse
Nope. Vzw are jerks like that
BigMacAttak said:
Hi all.
I finally had to do a factory reset on my Verizon GS3. Poor performance and yellow factory mode text floating on screen.
I have obtained root access on the phone, however ODIN3 flashing a recovery image fails. My understanding is that I need the bootloader unlocked for that to work. Is there a reliable way to do that?
Edit: running Android 4.4.2
SCH-535
Thanks,
BigMac
Click to expand...
Click to collapse
Your bootloader is locked forever, unlocking isn't an option.
If you want anything other than stock you'll have to use Safestrap recovery and modified stock ROMs like everyone else with locked bootloader Verizon S3.
Safestrap is deprecated. At least their site says dev. Has stopped. There's probably a fork of it on github somewhere, but any safestrap you find won't be by the original developer.
Sent from my SM-N900V using Tapatalk
Ohh Im Edgy said:
Safestrap is deprecated. At least their site says dev. Has stopped. There's probably a fork of it on github somewhere, but any safestrap you find won't be by the original developer.
Sent from my SM-N900V using Tapatalk
Click to expand...
Click to collapse
The Verizon users(on many of the Verizon devices) are currently using Safestrap, the Safestrap they need is here in this forum.
Droidriven said:
The Verizon users(on many of the Verizon devices) are currently using Safestrap, the Safestrap they need is here in this forum.
Click to expand...
Click to collapse
Thanks for saying that. I was actually looking for it myself about a month ago after a soft-brick and gave up when I found the info I posted already.
Is it the original dev or is it open source now?
Sent from my Glade Air - Freshener using Tapatalk
Ohh Im Edgy said:
Thanks for saying that. I was actually looking for it myself about a month ago after a soft-brick and gave up when I found the info I posted already.
Is it the original dev or is it open source now?
Sent from my Glade Air - Freshener using Tapatalk
Click to expand...
Click to collapse
I don't know, I use the Verizon S3 ROMs on my device but it isn't a Verizon device, but I spend a lot of time in the Verizon S3 forum, I see new users looking to customize their device all the time.
Here's the download for it
forum.xda-developers.com/devdb/project/?id=2405#downloads
Read this thread though, if you have encrypted your data, it will cause bootloop. Yes, it isn't supported anymore, BUT, the Safestrap still available still works.
forum.xda-developers.com/showthread.php?t=2605648
Does the gsm radio still work or do you use it only on wifi?
Mine is Verizon and I'm on att now, and thought about flashing the stock Att rom but other members on here told me it wouldn't work :s
Sent from my Glade Air - Freshener using Tapatalk
Ohh Im Edgy said:
Does the gsm radio still work or do you use it only on wifi?
Mine is Verizon and I'm on att now, and thought about flashing the stock Att rom but other members on here told me it wouldn't work :s
Sent from my Glade Air - Freshener using Tapatalk
Click to expand...
Click to collapse
I use it on Straight talk, my device is a Straight Talk S3 SCH-S968C that uses Verizon towers, my motherboard is actually stamped with the Verizon SCH-I535 model number, its rebranded as Straight Talk's device. Only difference is they disabled the 4G on the Verizon S3 when Straight Talk rebranded it.
Ohh Im Edgy said:
Does the gsm radio still work or do you use it only on wifi?
Mine is Verizon and I'm on att now, and thought about flashing the stock Att rom but other members on here told me it wouldn't work :s
Sent from my Glade Air - Freshener using Tapatalk
Click to expand...
Click to collapse
No, you can't flash AT&T firmware. That would surely brick your device. You can port the AT&T firmware somewhat easily, they are mostly the same but have different modems and a few other minor differences. I can link you to a thread for porting the US S3 variants.
No that's alright I'm on a note 3 anyway, but I've got a good place to start so thanks!
Sent from my Glade Air - Freshener using Tapatalk
Is 4.3(NC1) locked too?

Is 4.3 bootloader still locked?

Haven't been on this site much the last couple of months. Are we who OTA'd to 4.3 still stuck here? I am still liking it and have it rooted but lately have been wanting to get on AOSP. Is there still no workaround for the bootloader knox lock?
joshua5683 said:
Haven't been on this site much the last couple of months. Are we who OTA'd to 4.3 still stuck here? I am still liking it and have it rooted but lately have been wanting to get on AOSP. Is there still no workaround for the bootloader knox lock?
Click to expand...
Click to collapse
Still locked, we do have safestrap that will allow you to flash custom 4.3 TouchWiz roms.
Everything related to this update is located here:
http://forum.xda-developers.com/showthread.php?t=2639337
Sent from my SCH-I535 using Tapatalk 2
BadUsername said:
Still locked, we do have safestrap that will allow you to flash custom 4.3 TouchWiz roms.
Everything related to this update is located here:
http://forum.xda-developers.com/showthread.php?t=2639337
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Touchwiz 4.3 roms only? Not really worth it is it? There's only a few custom 4.3 TW roms out there and I am satisfied with stock. I'll wait until they get AOSP working. Thank you.

[Q] Quick question:

I found a link to install TWRP recovery onto my phone but first I have to unlock my bootloader. I bricked 2 identical phones in the past using EZ Unlock to unlock the bootloader. Both times as soon as I rebooted my phone...they never worked again. My question is how do I safely unlock my bootloader without this happening again? I also want to know once my bootloader is unlocked, and TWRP recovery is safely on my phone, will I then be able to freely install custom roms? Or will I still need to install safestrap and safestrap compatible roms or touchwiz roms only?
ronnieshane1 said:
I found a link to install TWRP recovery onto my phone but first I have to unlock my bootloader. I bricked 2 identical phones in the past using EZ Unlock to unlock the bootloader. Both times as soon as I rebooted my phone...they never worked again. My question is how do I safely unlock my bootloader without this happening again? I also want to know once my bootloader is unlocked, and TWRP recovery is safely on my phone, will I then be able to freely install custom roms? Or will I still need to install safestrap and safestrap compatible roms or touchwiz roms only?
Click to expand...
Click to collapse
If you are on 4.3 you cannot flash TWRP or unlock your bootloader. It is saferoot, safestrap, and safestrap compatible 4.3 TW ROMs only for you.
Sent from the Shark Tank using XDA Premium 4 mobile app
landshark68 said:
If you are on 4.3 you cannot flash TWRP or unlock your bootloader. It is saferoot, safestrap, and safestrap compatible 4.3 TW ROMs only for you.
Sent from the Shark Tank using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Is there any custom recoveries I can use? How about online nandroid?
ronnieshane1 said:
Is there any custom recoveries I can use? How about online nandroid?
Click to expand...
Click to collapse
There is no custom recovery that us compatible with either the VRUCML1 or VRUCNC1 TouchWiz OTAs. Safestrap is the closest you will get to a "custom recovery" from TW 4.3+.
More info below. It states everything that Landshark has already posted btw:
http://forum.xda-developers.com/showthread.php?t=2639337
Sent from my SCH-I535 using Tapatalk 4
Custom Roms
landshark68 said:
If you are on 4.3 you cannot flash TWRP or unlock your bootloader. It is saferoot, safestrap, and safestrap compatible 4.3 TW ROMs only for you.
Sent from the Shark Tank using XDA Premium 4 mobile app
Click to expand...
Click to collapse
What are some custom 4.3 touchwiz roms for NC1?
[GUIDE][ML1/NC1] TW 4.3 Sticky Roll-Up Thread (5-24-14) - http://forum.xda-developers.com/showthread.php?t=2639337
Here is a lit of rome or 4.3 touchwiz roms
Custom Roms
AllianceRom
Wicked Sensations Rom
MOAR
CleanROM 8.2 Core Edition
Samstock
Slapnuts
I535 Mostly Stock
Stock Rooted ML1 Rom
Yet when you go into the rom it self they all are on the old ML1 rom none say anything about NC1
Question is .. if i use safestrap on my locked boot loader with NC1 since i will be creating a new rom slot will i be able to flash the ML1 roms via safestrap or am i totally hosed or are there roms out there for 4.3 touchwiz for NC1 ?
Thanks
jcbjoe said:
What are some custom 4.3 touchwiz roms for NC1 ?
[GUIDE][ML1/NC1] TW 4.3 Sticky Roll-Up Thread (5-24-14) - http://forum.xda-developers.com/showthread.php?t=2639337
Here is a lit of rome or 4.3 touchwiz roms
Custom Roms
AllianceRom
Wicked Sensations Rom
MOAR
CleanROM 8.2 Core Edition
Samstock
Slapnuts
I535 Mostly Stock
Stock Rooted ML1 Rom
Yet when you go into the rom it self they all are on the old ML1 rom none say anything about NC1
Question is .. if i use safestrap on my locked boot loader with NC1 since i will be creating a new rom slot will i be able to flash the ML1 roms via safestrap or am i totally hosed or are there roms out there for 4.3 touchwiz for NC1 ?
Thanks
Click to expand...
Click to collapse
There are no 4.3 Touchwiz ROMs for NC1. If you want to have fully functioning ROMs (meaning have working WiFi) through safestrap you have to ODIN flash back to ML1, then root, load safestrap, and flash an ML1 based 4.3 TW ROM, then the kernel module from the safestrap thread. Another user in these forums was talking about posting an NC1 kernel module, but I haven't seen any results on that. If you take the OTA upgrade or ODIN flash up to NE1 4.4.2, safestrap is not yet available for that.
Another question
landshark68 said:
If you are on 4.3 you cannot flash TWRP or unlock your bootloader. It is saferoot, safestrap, and safestrap compatible 4.3 TW ROMs only for you.
Sent from the Shark Tank using XDA Premium 4 mobile app
Click to expand...
Click to collapse
landshark68 said:
There are no 4.3 Touchwiz ROMs for NC1. If you want to have fully functioning ROMs (meaning have working WiFi) through safestrap you have to ODIN flash back to ML1, then root, load safestrap, and flash an ML1 based 4.3 TW ROM, then the kernel module from the safestrap thread. Another user in these forums was talking about posting an NC1 kernel module, but I haven't seen any results on that. If you take the OTA upgrade or ODIN flash up to NE1 4.4.2, safestrap is not yet available for that.
Click to expand...
Click to collapse
Thanks for the reply
So if I'm on NC1 i have to go back to ML1 .. will i be able to if my boot loader is locked and looks like this
ODIN MODE:
PRODUCT NAME: SCH-I535
CURRENT BINARY: SAMSUNG OFFICAL
SYSTEM STATUS OFFICAL
QUALCOM SECREBOOT ENABLE
WARRANTY BIT: 0
BOOTLOADERAP SWREV: 1
Thanks
jcbjoe said:
Thanks for the reply
So if I'm on NC1 i have to go back to ML1 .. will i be able to if my boot loader is locked and looks like this
ODIN MODE:
PRODUCT NAME: SCH-I535
CURRENT BINARY: SAMSUNG OFFICAL
SYSTEM STATUS OFFICAL
QUALCOM SECREBOOT ENABLE
WARRANTY BIT: 0
BOOTLOADERAP SWREV: 1
Thanks
Click to expand...
Click to collapse
Yes. ML1 and NC1 are both 4.3 so you can go to ML1 No problem.
Sent from my SCH-I535 using Tapatalk
697
Sandman-007 said:
Yes. ML1 and NC1 are both 4.3 so you can go to ML1 No problem.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
Thanks
Sandman-007 said:
Yes. ML1 and NC1 are both 4.3 so you can go to ML1 No problem.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
Wow you guys are awesome .. i odined back to ML1 rooted then safestraped and now I'm on a custom 4.3 touchwiz Rom
Sent from my SCH-I535 using XDA Free mobile app
jcbjoe said:
Wow you guys are awesome .. i odined back to ML1 rooted then safestraped and now I'm on a custom 4.3 touchwiz Rom
Sent from my SCH-I535 using XDA Free mobile app
Click to expand...
Click to collapse
Glad to see you are all set up again :good:
Sent from my SCH-I535 using Tapatalk

[Q] Rooted Vzw S3 with towelroot, can I flash a rom?

So I just rooted my phone the other day and I was wondering if I am able to flash a rom. I disabled Knox and things seem to be okay so far. I want to flash Cyanogenmod or SlimKat to my phone and I want to know if I need to unlock the bootloader to get a custom recovery (twrp) and install the rom. Thanks in advance!
zdiddy456 said:
So I just rooted my phone the other day and I was wondering if I am able to flash a rom. I disabled Knox and things seem to be okay so far. I want to flash Cyanogenmod or SlimKat to my phone and I want to know if I need to unlock the bootloader to get a custom recovery (twrp) and install the rom. Thanks in advance!
Click to expand...
Click to collapse
There's only a select few for a locked bootloader, look around on the general tab, you'll find a TouchWiz 4.3 download topic.
Sent from my SCH-I535 using XDA Free mobile app
poppers162 said:
There's only a select few for a locked bootloader, look around on the general tab, you'll find a TouchWiz 4.3 download topic.
Sent from my SCH-I535 using XDA Free mobile app
Click to expand...
Click to collapse
I'm not looking for TouchWiz. It is a resource hog. I want SlimKat or CM.
zdiddy456 said:
I'm not looking for TouchWiz. It is a resource hog. I want SlimKat or CM.
Click to expand...
Click to collapse
If you have locked boot loader, which I think you are, you need to install safe strap then flash TW rom. Currently there is only one available for safestrap which can be found here http://forum.xda-developers.com/gal...iterom-v1-0-i535vrudne1-t2805797/post53919312
zdiddy456 said:
I'm not looking for TouchWiz. It is a resource hog. I want SlimKat or CM.
Click to expand...
Click to collapse
You cannot flash any AOSP ROMs when you are on a locked bootloader. It's safestrap and touchwiz ROMs that match your current build (4.3 or 4.4.2) only.
Sent from the Shark Tank using XDA Premium 4 mobile app
Is there any way I can unlock the bootloader?
zdiddy456 said:
Is there any way I can unlock the bootloader?
Click to expand...
Click to collapse
Nope, once you took the OTA 4.3 or 4.4 your boot loader is locked forever, unless someone from Samsung leaks it out for us.
EDIT: OK I was wrong, someone just got downgrade from 4.4 back to 4.1.2 with unlocked boot loader by send it out to a phone service company and the cost is $50.

I need help

Guys I just recovered my Galaxy S3 Verizon variant and I see if I install twrp, it would brick my device because I'm on 4.4.2 bootloader.
I want to install Lineageos how can I do it?
yoahmad1995 said:
Guys I just recovered my Galaxy S3 Verizon variant and I see if I install twrp, it would brick my device because I'm on 4.4.2 bootloader.
I want to install Lineageos how can I do it?
Click to expand...
Click to collapse
You can't, once you took the 4.4.2 update you've got a permanently locked bootloader, period. You will never be able to use TWRP/CWM or AOSP/CM based ROM or LineageOS and that's all there is to it, don't even waste your time continuing to search for away around the bootloader because it can't be done.
Your only option is root and Xposed or Safestrap recovery and modified stock ROMs.
Sent from my SM-S903VL using Tapatalk
Droidriven said:
You can't, once you took the 4.4.2 update you've got a permanently locked bootloader, period. You will never be able to use TWRP/CWM or AOSP/CM based ROM or Lineages and that's all there us to it, don't even waste your time continuing to search for away around the bootloader because it can't be done.
Your only option is root and Xposed or Safestrap recovery and modified stock ROMs.
Click to expand...
Click to collapse
Oh got it. But it was 4.3 and I read even 4.3 is locked. Thank you for explaining!
Sent from my Galaxy S5 using XDA Labs
yoahmad1995 said:
Oh got it. But it was 4.3 and I read even 4.3 is locked. Thank you for explaining!
Sent from my Galaxy S5 using XDA Labs
Click to expand...
Click to collapse
There is a 4.3 build that wasn't locked(I think it was the ML1 build), then there was a 4.3 update that had locked bootloader, once that 4.3 is taken everything after that is locked.
If you have the original 4.3 and not the locked 4.3 update then you can use TWRP and custom ROMs
Sent from my SM-S903VL using Tapatalk

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