Samsung S3 OEM unlocking ... - Galaxy S III Q&A, Help & Troubleshooting

Hello,
I'm new to all this so forgive me my noobish questions. I've allready searched the internet for tutorials and how-to's but nothing seems to work.
Can someone help me on how to unlock the bootloader?
I would like to install a custom rom but need to root the phone first, in order to do that it has to be unlocked ...
Iv'e tried with adb & fastboot but nothing seems to work.
The phone (samsung S3 GT-I9300 android 4.3) remains locked.
Thanks in advance for your help

dodger1 said:
Hello,
I'm new to all this so forgive me my noobish questions. I've allready searched the internet for tutorials and how-to's but nothing seems to work.
Can someone help me on how to unlock the bootloader?
I would like to install a custom rom but need to root the phone first, in order to do that it has to be unlocked ...
Iv'e tried with adb & fastboot but nothing seems to work.
The phone (samsung S3 GT-I9300 android 4.3) remains locked.
Thanks in advance for your help
Click to expand...
Click to collapse
Are you sure that the BL is locked? Normaly it is unlocked ? so you can fash twrp to flash custom Roms
Sent from my Xiaomi Redmi Note 7 using XDA Labs

Snuk265 said:
Are you sure that the BL is locked? Normaly it is unlocked ? so you can fash twrp to flash custom Roms
Sent from my Xiaomi Redmi Note 7 using XDA Labs
Click to expand...
Click to collapse
I think it's locked ... if i try with adb & fastboot ... (several commands to check if the phone is locked i don't get an answer) ... only <waiting for device> message.
Is there any other way to check if it's locked?
I'm afraid that if i try to install TWRP it will block the phone and all i have left is a useless paper weight.

dodger1 said:
I think it's locked ... if i try with adb & fastboot ... (several commands to check if the phone is locked i don't get an answer) ... only <waiting for device> message.
Is there any other way to check if it's locked?
I'm afraid that if i try to install TWRP it will block the phone and all i have left is a useless paper weight.
Click to expand...
Click to collapse
The bootloader is not locked. Samsung phones don't have a fastboot mode, they have a download mode. You have two options for flashing twrp: odin or heimdall.

theandroid02 said:
The bootloader is not locked. Samsung phones don't have a fastboot mode, they have a download mode. You have two options for flashing twrp: odin or heimdall.
Click to expand...
Click to collapse
Hello,
I installed Odin307 and downloaded CF-root-sgs3-v6.4.tar, after connecting odin to my S3 and selecting the CF root file ... after the phone rebooted and went back to android i got the message "PASS" in odin.
So if i am correct, the phone should be rooted by now.
Now i guess: installing TWRP via odin and the google apps ... what version of Lineage Os would you recommend?
If i check on the website of lineage os, the samsung s3 i9300 is no longer available ...

Hi, you could follow this entire tutorial : https://forum.xda-developers.com/galaxy-s3/help/guide-tutorial-samsung-galaxy-s3-i9300-t3491788

Related

accessing bootloader

Hiya
I've desided to change my rom on my G925F and I have it rooted however I am unable to reboot into the bootloader I can't find any way to unlock it.
Any thoughts, hints, ideas that would help me in my quest to rid my phone of bloatware would be greatly appreciated
You won't need to unlock your bootloader if you have a 925F - do you mean you can't boot into recovery mode? What exactly are you trying yo achieve? Do you want to flash another firnware, or just de-bloat your current firmware?
Hi
I guess I should have been a bit clearer, my plan/goal is to flash another firmware onto my phone
Maybe I should say why I want to get into the bootloader:
I want to install fastboot and I can't cause I can't get into bootloader
Menoto said:
Hi
I guess I should have been a bit clearer, my plan/goal is to flash another firmware onto my phone
Maybe I should say why I want to get into the bootloader:
I want to install fastboot and I can't cause I can't get into bootloader
Click to expand...
Click to collapse
So if I understand your request, you'll first need to flash a custom recovery like CWM or TWRP, which you do via Odin. Once you have that, you can flash a new custom firmware as an unsigned .zip file. Follow the instructions here - this is what I used on my 925F.
nofam said:
So if I understand your request, you'll first need to flash a custom recovery like CWM or TWRP, which you do via Odin. Once you have that, you can flash a new custom firmware as an unsigned .zip file. Follow the instructions here - this is what I used on my 925F.
Click to expand...
Click to collapse
Hi
I have installed TWRP recovery (and it's working just fine)
I've installed both the BL and the CP from this one
and I now have the baseband as stated in this (still unable to reach the bootloader)
the reason I wanna reach this magical place is so that I can install fastboot
Menoto said:
Hi
I have installed TWRP recovery (and it's working just fine)
I've installed both the BL and the CP from this one
and I now have the baseband as stated in this (still unable to reach the bootloader)
the reason I wanna reach this magical place is so that I can install fastboot
Click to expand...
Click to collapse
Sorry, I'm still not sure what you're trying to achieve - you're obviously able to boot into Download Mode if you're now using TWRP (assuming you flash it via Odin). What are you trying to do via Fastboot that can't be done via TWRP?
nofam said:
So if I understand your request, you'll first need to flash a custom recovery like CWM or TWRP, which you do via Odin. Once you have that, you can flash a new custom firmware as an unsigned .zip file. Follow the instructions here - this is what I used on my 925F.
Click to expand...
Click to collapse
nofam said:
Sorry, I'm still not sure what you're trying to achieve - you're obviously able to boot into Download Mode if you're now using TWRP (assuming you flash it via Odin). What are you trying to do via Fastboot that can't be done via TWRP?
Click to expand...
Click to collapse
Hi
I'm currently trying to install ubuntu touch on my phone as I'm using ubuntu on my pc and the only place I've found that helps with this that isn't over 2 years old is this one and doing the terminal commands requires the phone to be in bootloader mode or else it will not get recognized by the pc
Menoto said:
Hi
I'm currently trying to install ubuntu touch on my phone as I'm using ubuntu on my pc and the only place I've found that helps with this that isn't over 2 years old is this one and doing the terminal commands requires the phone to be in bootloader mode or else it will not get recognized by the pc
Click to expand...
Click to collapse
Umm. . . According to that link you've posted, the Galaxy S6 isn't even supported. I suspected as much, as Fastboot is usually something you only see on pure Android devices (Nexus phones/tablets).
I'd strongly suggest you do some more reading on this before proceeding, as you'll almost certainly end up with an expensive paperweight otherwise!!
nofam said:
Umm. . . According to that link you've posted, the Galaxy S6 isn't even supported. I suspected as much, as Fastboot is usually something you only see on pure Android devices (Nexus phones/tablets).
I'd strongly suggest you do some more reading on this before proceeding, as you'll almost certainly end up with an expensive paperweight otherwise!!
Click to expand...
Click to collapse
Thanks a lot for the help I will do this
Sent from my Nexus 4 using XDA Free mobile app

New Redminote 3 Pro can't flash ROMs

Hi guys,
Just recently purchased redmi note 3 pro 32gb from gearbest.
Phone should be international version with 7.2.13.00(LHOCNCL) preinstalled.
I found that I cannot flash any standard / developer ROM when official website by using built-in flash tool.
Any way to go from here? to at least receive OTA updates and in future I will like to try out Ressurection rom.
thanks.
Your ROM is unexsisting one, cooked by the seller.
You must flash a new one clean via EDL mode and MiFlash
This CN in the name means Chinese, and the numbers says that the rom is only modified to support more languages.
pakudaboy said:
Hi guys,
Just recently purchased redmi note 3 pro 32gb from gearbest.
Phone should be international version with 7.2.13.00(LHOCNCL) preinstalled.
I found that I cannot flash any standard / developer ROM when official website by using built-in flash tool.
Any way to go from here? to at least receive OTA updates and in future I will like to try out Ressurection rom.
thanks.
Click to expand...
Click to collapse
Yes ^he^ is correct . Download a rom from the mi website . And then flash the rom using MiFlash tool . then you should be able install roms .
s-u-f-f-e-r said:
Your ROM is unexsisting one, cooked by the seller.
You must flash a new one clean via EDL mode and MiFlash
This CN in the name means Chinese, and the numbers says that the rom is only modified to support more languages.
Click to expand...
Click to collapse
thanks guys.
Does this mean i need to wait for unlock bootloader first?
my MI account has previous device linked which I just removed now and set to my new phone.
might take weeks to get approval?
or is there a guy to by pass the locked bootloader?
thanks.
pakudaboy said:
thanks guys.
Does this mean i need to wait for unlock bootloader first?
my MI account has previous device linked which I just removed now and set to my new phone.
might take weeks to get approval?
or is there a guy to by pass the locked bootloader?
thanks.
Click to expand...
Click to collapse
This procedure works on locked bootloader.
http://en.miui.com/thread-235865-1-1.html
s-u-f-f-e-r said:
This procedure works on locked bootloader.
http://en.miui.com/thread-235865-1-1.html
Click to expand...
Click to collapse
thanks so much for the info
will I lost my IMEI if I use miflash and choose FlashALL per that guide?
pakudaboy said:
thanks so much for the info
will I lost my IMEI if I use miflash and choose FlashALL per that guide?
Click to expand...
Click to collapse
No you wont loose your IMEI. Basically you are just flashing official MIUI Rom, your IMEI details are stored in another partition (non volatile) and FlashAll will not touch them.
You are safe to follow this guide, and by the way you would not be able to unlock the bootloader (the official way) from this vendor Rom. So if you plan to do so later, here you go with this first step.
gunmoule said:
No you wont loose your IMEI. Basically you are just flashing official MIUI Rom, your IMEI details are stored in another partition (non volatile) and FlashAll will not touch them.
You are safe to follow this guide, and by the way you would not be able to unlock the bootloader (the official way) from this vendor Rom. So if you plan to do so later, here you go with this first step.
Click to expand...
Click to collapse
thanks for ur info.
yeh, I tried to unlock it with official tool but kept failing.
I'll give that guide a show later when I'm home.
hopefully I don't brick my phone..lol
guide works great!
now i'm with global 7.3.7
is there a guide to flash TWRP with locked bootloader as well?
thanks!
pakudaboy said:
thanks for ur info.
yeh, I tried to unlock it with official tool but kept failing.
I'll give that guide a show later when I'm home.
hopefully I don't brick my phone..lol
Click to expand...
Click to collapse
Unlocking was successful only on dev rom in my case
pakudaboy said:
guide works great!
now i'm with global 7.3.7
is there a guide to flash TWRP with locked bootloader as well?
thanks!
Click to expand...
Click to collapse
Read up this thread: http://forum.xda-developers.com/redmi-note-3/how-to/guide-redmi-note-3-available-twrps-t3406708 , this: http://en.miui.com/thread-240531-1-1.html and this: http://en.miui.com/thread-296053-1-1.html
Sent from my Redmi Note 3 using Tapatalk
s-u-f-f-e-r said:
Unlocking was successful only on dev rom in my case
Click to expand...
Click to collapse
ok
i'm flashing dev ROM now.
going to try if i can unlock BL.
so there no way to install TWRP without unlock BL first?
my situation is bit messed up, because I had Redmi Note 2 linke to same mobile number.
so when I tried to unlock it it keeps saying "Couldn't verify device, Current accoutn is different from the account info on the device" but i'm 100% sure i'm using same account tho.
s-u-f-f-e-r said:
Unlocking was successful only on dev rom in my case
Click to expand...
Click to collapse
unlocked fine with Dev ROM!
sweet
now time to find out how to flash TWRP!
Put the recovery image file in the folder from Unlocker.
Press Shift and Right click with the mouse on the empty space in the folder.
In the context menu choose Open Command Window Here
Put the phone in fastboot mode
Write in the terminal
fastboot flash recovery and write down the name of the image. For example:
fastboot flash recovery twrp.img
or
fastboot flash recovery recovery.img
Success.
s-u-f-f-e-r said:
Put the recovery image file in the folder from Unlocker.
Press Shift and Right click with the mouse on the empty space in the folder.
In the context menu choose Open Command Window Here
Put the phone in fastboot mode
Write in the terminal
fastboot flash recovery and write down the name of the image. For example:
fastboot flash recovery twrp.img
or
fastboot flash recovery recovery.img
Success.
Click to expand...
Click to collapse
done.
TWRP flashed, but somehow lost wifi function in Dev Rom
going to try flash Resurrection over see if that fix it.
seems everything's working now with RR rom!
thanks so much for everyone's help especially s-u-f-f-e-r!

Upgrade CM 13 to CM 14.1 failed - no recovery mode anymore

Hi guys,
first of all: I am an idiot
I was using an old nightly from CM 13-kenzo and decided to do some preparation to finally migrate to Lineage without data loss.
So I wanted to go to CM14.1 before flashing the experimental Lineage and the nightly.
What did I flash with TWRP?
1.) ROM: cm-14.1-20161225-NIGHTLY-kenzo.zip
2.) GAPPS 7.1 ARM64 micro
3.) Firmware: CM14.1-firmware_20161205.zip
I think I should have flashed the firmware first, moreover, I didn't wipe caches.
What's happening now?
Recovery mode does not work (the display just flash for half a second)
Booting does not work (ofc )
Fastboot mode still works.
How can I fix this nice problem with Cyanogenmod?
Any help is much appreciated.
Bro,I also faced this problem. Just go to guides section and follow the guide"install zcx twrp without unlocking bootlader" one. And flash by that method twrp and you will get it all back.
I have also faced problem same you are facing and solved it!!!
Btw. which recovery you used while installing this build?
ATG Droid said:
Btw. which recovery you used while installing this build?
Click to expand...
Click to collapse
Your bootloader is locked
Snooze4 said:
Hi guys,
first of all: I am an idiot
I was using an old nightly from CM 13-kenzo and decided to do some preparation to finally migrate to Lineage without data loss.
So I wanted to go to CM14.1 before flashing the experimental Lineage and the nightly.
What did I flash with TWRP?
1.) ROM: cm-14.1-20161225-NIGHTLY-kenzo.zip
2.) GAPPS 7.1 ARM64 micro
3.) Firmware: CM14.1-firmware_20161205.zip
I think I should have flashed the firmware first, moreover, I didn't wipe caches.
What's happening now?
Recovery mode does not work (the display just flash for half a second)
Booting does not work (ofc )
Fastboot mode still works.
How can I fix this nice problem with Cyanogenmod?
Any help is much appreciated.
Click to expand...
Click to collapse
. Your bootloader is lock, if you still can get to fastboot, then enter edl mode and use miflash to unlock yourboot loader again
Thx. Does Miflash work on a chromebook?
Mrxyzl said:
. Your bootloader is lock, if you still can get to fastboot, then enter edl mode and use miflash to unlock yourboot loader again
Click to expand...
Click to collapse
Do you mean the MiFlash Unlock tool? That doesn't work.
It's saying "Your device isn't supported by Mi Unlock" Go to .../unlock to apply for Mi Unlock support.
If you mean XiaomiMiFlash tool, what exactly do I have to flash?
Snooze4 said:
Do you mean the MiFlash Unlock tool? That doesn't work.
It's saying "Your device isn't supported by Mi Unlock" Go to .../unlock to apply for Mi Unlock support.
If you mean XiaomiMiFlash tool, what exactly do I have to flash?
Click to expand...
Click to collapse
Yes, I mean Miflash tool. You need to folow this guide
http://en.miui.com/thread-235865-1-1.html
And remember you will lost all data in internal memory, you will get back to MIUI with that guide. Then try to unlock your bootloader officially or unofficially again.
Or if you woud like to take risk then you can try this way https://forum.xda-developers.com/redmi-note-3/how-to/unlock-unofficially-install-zcx-twrp-t3586778 without data lost
Mrxyzl said:
Yes, I mean Miflash tool. You need to folow this guide
http://en.miui.com/thread-235865-1-1.html
And remember you will lost all data in internal memory, you will get back to MIUI with that guide. Then try to unlock your bootloader officially or unofficially again.
Or if you woud like to take risk then you can try this way https://forum.xda-developers.com/redmi-note-3/how-to/unlock-unofficially-install-zcx-twrp-t3586778 without data lost
Click to expand...
Click to collapse
Regarding your 2nd link:
now bring your phone in action and turn on oem unlock from developer optipn(tap miui version 7 time and find developer option in additional option)
sign out of your mi account
Click to expand...
Click to collapse
That would be the impossible part. So I guess I've to work with the first link. Thanks.
So if you damaged the recovery and your bootloader is locked theres no way to rescue this phone without a xiaomi shop but good luck
Okay problem solved. I used this guide https://forum.xda-developers.com/redmi-note-3/how-to/kate-guide-install-lineage-os-locked-t3546154 and it worked like a charm.
Thread can be closed.

Please help me

I have a RedmI Note 3 (kenzo) running Lineage OS 14.1
The RAM usage reports around 150MB of use only and there is no free RAM. So I think there is a problem with my phone and I decide to flash everything to start again.
I found a compatible kernel and flashed that new kernel and I got bootloop.
I read that if I flash the ROM again, the kernel will be replaced by the default one so I went to do that with TWRP.
Went to TWRP to flash my ROM and got error 7.
Read a bit more and I read that somethimes very old TWRP will show that message for new ROM.
Indeed, my TWRP was quite old.
Followed steps to flash my TWRP recovery to newer version in TWRP.
Now my TWRP recovery can't even work.
Try to flash ROM with ADB, but I forgot to enable debugging before bootloop.
Is there a way I can fix it?
I don't need the things on my phone.
I just want it to work again.
Thank you for reading and provide me with guidance to fix my phone.
Trying to flash MIUI ROM using MiFlash. Hope it works. Then I can work my way back to Lineage OS.
flash the miui rom using miflash by going into the edl mode from fastboot.
Androbots said:
flash the miui rom using miflash by going into the edl mode from fastboot.
Click to expand...
Click to collapse
Thank you. Done that and still bootloop. Now bootloader is locked too. :crying:
Pyree said:
Thank you. Done that and still bootloop. Now bootloader is locked too. :crying:
Click to expand...
Click to collapse
I think then you should unlock via unofficial method
Androbots said:
I think then you should unlock via unofficial method
Click to expand...
Click to collapse
I will do that after some sleep.
I have another thing to worry about. The charge light is not on and my phone won't shut down. It can only bootloop or in fastboot. I put it on fastboot now. Still don't know how to shut it down or not sure if it is charging because there is no charging light.
I followed this:
https://forum.xda-developers.com/redmi-note-3/how-to/fix-bootloop-redmi-note-3-recovery-edl-t3521297
Flashed it, MiFlash says operation was successful but still won't boot up normally.
Now I don't have to worry about running out of battery because it boots to logo and turns off to nothing.

			
				
Pyree said:
Thank you. Done that and still bootloop. Now bootloader is locked too. :crying:
Click to expand...
Click to collapse
If u already unlock officially
Just unlock it again with mi unlock
I think ur bootloader got relock
Androbots said:
I think then you should unlock via unofficial method
Click to expand...
Click to collapse
Yoodaddy16 said:
If u already unlock officially
Just unlock it again with mi unlock
I think ur bootloader got relock
Click to expand...
Click to collapse
I followed the guide here:
https://forum.xda-developers.com/redmi-note-3/how-to/fix-bootloop-redmi-note-3-recovery-edl-t3521297
I managed to enter EDL mode because I have a red light flashing. But after I flash it using normal USB data cable, MIUI ROM will bootloop. Anyway, I got myself an engineering cable and flash it, MIUI boot successfully and so I proceed to flash Lineage OS. Everything is fine now.

FRP Unlock SM-T377W, Unsuccessful on 7.1.1 ? Help Please

"FRP Unlock SM-T377W, Unsuccessful on 7.1.1 ? Help Please"
I have SM-T377W with 7.1.1
I tried to flash it with this COMBINATIONS firmware
COMBINATION_OYA_FA60_T377WVLU3ARG1
Then I used the Z3x Tool to reset FRP, it says "OK"
however, then when I put it again on Download mode it is still Locked FRP
Also when I re-flash it with OEM it still ask for Google Verification
I also tried to flash it with TWRP to Root it but I keep getting
Custom Binary Block by FRP Lock
IS THERE A WAY TO REMOVE FRP FROM THIS DEVICE ?
--------- OEM flash in this device is ----------
Canada (Rogers)
PDA: T377WVLU3BRG4
Product Code: RWC
CSC: T377WOYA3BRG4
Phone: T377WVLU3BRG4
-------------------------------------
Any Suggestions Guys ?
Regards
msaithan said:
"FRP Unlock SM-T377W, Unsuccessful on 7.1.1 ? Help Please"
I have SM-T377W with 7.1.1
I tried to flash it with this COMBINATIONS firmware
COMBINATION_OYA_FA60_T377WVLU3ARG1
Then I used the Z3x Tool to reset FRP, it says "OK"
however, then when I put it again on Download mode it is still Locked FRP
Also when I re-flash it with OEM it still ask for Google Verification
I also tried to flash it with TWRP to Root it but I keep getting
Custom Binary Block by FRP Lock
IS THERE A WAY TO REMOVE FRP FROM THIS DEVICE ?
--------- OEM flash in this device is ----------
Canada (Rogers)
PDA: T377WVLU3BRG4
Product Code: RWC
CSC: T377WOYA3BRG4
Phone: T377WVLU3BRG4
-------------------------------------
Any Suggestions Guys ?
Regards
Click to expand...
Click to collapse
i am having the exact same problem as you with a samsung j1
cant get the custom recovery modes onto the phone.
odin flashes the stock rom no problem, but i cant get SR1-SuperSU-v2.78-SR1-20160915123031 or twrp on the phone.
DaDirtiest said:
i am having the exact same problem as you with a samsung j1
cant get the custom recovery modes onto the phone.
odin flashes the stock rom no problem, but i cant get SR1-SuperSU-v2.78-SR1-20160915123031 or twrp on the phone.
Click to expand...
Click to collapse
yea i have been trying for days now with no luck !
FRP Unlock solution for SM-T377W
msaithan said:
yea i have been trying for days now with no luck !
Click to expand...
Click to collapse
This is the only method that worked to solve the FRP lock issue. The video is not in English but you can still follow the instructions.
youtube_com/watch?v=NplMF8O2aTk&t=579s&index=2&list=LLWLJUl2J_mwEvi3FgXukeUA
Ray_D_2018 said:
This is the only method that worked to solve the FRP lock issue. The video is not in English but you can still follow the instructions.
youtube_com/watch?v=NplMF8O2aTk&t=579s&index=2&list=LLWLJUl2J_mwEvi3FgXukeUA
Click to expand...
Click to collapse
You are a Legend BRO (+ who made the video), finally i unlocked the Samsung SM-T377W from rogers
I had the correct files (combination + stock) its just that one step i was missing, the final step of combining the 3 correct files (sboot, boot + system)
I appreciate it bro
Ray_D_2018 said:
This is the only method that worked to solve the FRP lock issue. The video is not in English but you can still follow the instructions.
youtube_com/watch?v=NplMF8O2aTk&t=579s&index=2&list=LLWLJUl2J_mwEvi3FgXukeUA
Click to expand...
Click to collapse
i followed to youtube tutorial and succesfully flashed my A520w using COMBINATION_OYA_FA60_A520WVLU1AQC1 but i cannot get the phone to reboot any suggestions?
the odin operation was a success so are there other things i should push up in this phone and how can i get it to reboot its really weird i can only put it into download mode before it gave me the message about operating system error use samsung smart switch software, now it doesnt do that its just black screen of death when i choose rebooot
DaDirtiest said:
i followed to youtube tutorial and succesfully flashed my A520w using COMBINATION_OYA_FA60_A520WVLU1AQC1 but i cannot get the phone to reboot any suggestions?
the odin operation was a success so are there other things i should push up in this phone and how can i get it to reboot its really weird i can only put it into download mode before it gave me the message about operating system error use samsung smart switch software, now it doesnt do that its just black screen of death when i choose rebooot
Click to expand...
Click to collapse
You might want to try and do a factory reset at this point and see if that resolves the issue. Alternatively, maybe trying loading the stock software ROM through download mode and retry the process.
GuestD0091 said:
You might want to try and do a factory reset at this point and see if that resolves the issue. Alternatively, maybe trying loading the stock software ROM through download mode and retry the process.
Click to expand...
Click to collapse
did the 3 file combination
then flashed with stock rom
now finally into the phone, but
stuck at the frp lock screen
A520W with videotron

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