I unlocked my phone to install CyanogenMod. I know how to get the stock firmware back on, but I don't know how to re-lock the bootloader so that it doesn't show "Custom" on the boot screen with the unlocked padlock. Does anyone have a link/guide for doing this?
hedpe said:
I unlocked my phone to install CyanogenMod. I know how to get the stock firmware back on, but I don't know how to re-lock the bootloader so that it doesn't show "Custom" on the boot screen with the unlocked padlock. Does anyone have a link/guide for doing this?
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stock firmware for Canadian SGH-I337M
stock firmware for AT&T SGH-I337
p.s. I searched with keyword "stock" to find these....
p.p.s. you won't be "re-locking" the bootloader. this re-installs stock recovery, kernel and ROM. it will say Samsung Official. we do not have a way to lock or unlock the bootloader. it either is locked or unlocked depending on which variant you have.
Related
Yet another post... So, I have been trying to install TWRP and CWM but every time I boot into recovery with those installed I get: "System Software not Authorized" error. Is there anyway to bypass this? I think I Soft Bricked it, but I fixed it with Odin and a stock recovery file. I just want to get a custom recovery... Any help is appreciated.
Device: Samsung Galaxy S4 I337 (AT&T) (Rooted)
Can't install cwm or twrp on an s4 with a locked bootloader.
Hmm that is strange.
audit13 said:
Can't install cwm or twrp on an s4 with a locked bootloader.
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How would I go about unlocking it? I remember before the s4 got the 5.0.1 update and I had cwm.
The att s4 bootloader can't be unlocked once it has been upgraded to a locked bootloader.
That sucks. Is there another phone that can unlock it's boot loader? I head something about asking the company to unlock it for you. Is that possible?
Quick little update:
I have found some options that might work. Option 1: Someone said that you could downgrade to 4.2.2 because that has an unlocked boot loader. Or option 2, which is go to Best Buy and tell the Samsung Support Center dude to unlock it for you. I really would rather go with option one, because what if the dude denies it. Unless, because I already got the locked one on my device, there is no way to downgrade it...
There is no way to downgrade the bootloader to 4.2.2 or to unlock the bootloader.
Right, well I installed Safestrap and updated to 5.0.1 with keep root method. Something I just realized is that we have a s2 laying around somewhere. I guess I can mess with that. And as for a new phone, I guess I will save up to buy a Nexus 6 from the Google site.
The phone's bootloader is probably locked. It has never been unlocked, and I believe model SM-G900M was sold with the bootloader locked. (I tried to check if the bootloader is indeed locked, but fastboot did not detect the phone.)
I understand that in this scenario there is currently no way to root an S5, right?
It appears that the only way to go is to perform an Android downgrade. I would have to use Odin to flash a stock 4.4 ROM (is this correct?), then I would be able to root the phone with towelroot, unlock the bootloader and install flashfire on my device. Does this sound like a doable approach?
Suggestions/advice very much appreciated.
Thanks!
Lately, I wanted to root my GS4 (it surely wasn't an AT&T one, bought it in Russia, there is no AT&T). So, motochopper fails, CF-Auto-Root fails, everything fails! I am stuck at 4.4.2 and there is no OTA upgrade. Download mode says "MODEL NUMBER: SGH-I337", but in the "About phone" menu it is clearly stated that model number is "GT-I9500" and build number is "KOT49H.I9500XXUFNB7". Even the baseband version starts with "I9500". All the hacks I am seeing on the Internet (such as Loki) for unlocking bootloader fail, saying that my phone model is not supported. Heimdall and Odin fail to flash anything and the red text appears in the download mode: "SECURE MAGICODE CHECK FAIL". What my model is and what do I DO? I want to root it and install some decent recovery and CWM ROM.
Please, ask any questions you like and help me)
The model number in download mode is the right one. Once the bootloader on the i337 is locked, it cannot be unlocked.
A locked bootloader means cwm and twrp cannot be installed.
audit13 said:
The model number in download mode is the right one. Once the bootloader on the i337 is locked, it cannot be unlocked.
A locked bootloader means cwm and twrp cannot be installed.
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Why can't it be unlocked? I've seen so many guides and tools to do it. The problem is that they don't work and I don't even know my true build version to figure smth out. Why doesn't it even root like normal I337 should do? Also it doensn't upgrade to lollipop like normal I337 should.
The bootloader is locked on the i337, just like it is on other at&t phones, with no way to unlock it. An s4 bounty on XDA for finding an unlock method remains unclaimed: http://forum.xda-developers.com/showthread.php?t=2257620
The phone is an i337 and can only run stock i337 roms or customs based off a stock rom.
Safe strap is the only custom recovery available for a locked bootloader.
audit13 said:
The bootloader is locked on the i337, just like it is on other at&t phones, with no way to unlock it. An s4 bounty on XDA for finding an unlock method remains unclaimed: http://forum.xda-developers.com/showthread.php?t=2257620
The phone is an i337 and can only run stock i337 roms or customs based off a stock rom.
Safe strap is the only custom recovery available for a locked bootloader.
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So, ok. We managed to confirm it is a SGH-I337. But what about Loki tool? It can install CWM recovery, but does not work on my device? Also, I ask one more time, how can I know what the real build number is? And how to root? All SGH-I337 should root with motochopper but mine doesn't. What can I do about this?
Cwm and twrp cannot work on the phone. I have never seen a post where someone has ever had it work with a locked bootloader.
I'm not sure but motochopper may not work with every bootloader and every rom. Reading through this forum, I don't think I remember seeing motochopper mentioned.
You'll have to confirm the bootloader and rom in the phone and search through the various rooting threads. I don't have access to the i337, only the i337m as I am in Canada.
I want to flash verizon firmware because all of the custom roms give me garbage bettery life and i am unable to flash stock because of an error stating fused 3 binary 2. I have the straight talk branded S5 which is actually a verizon G900V with tracfone branded firmware. What i want to do is flash a stock verizon rom but i keep running into secureboot blocking me at every path, Is there anything i can do to force it to flash?
No you can't. You should flash a stock ROM, root it, install safestrap and flash a Verizon system, your only option unless you have an eMMC 15 which allows a bootloader unlock, but idk if it works on straighttalk
GeTex said:
No you can't. You should flash a stock ROM, root it, install safestrap and flash a Verizon system, your only option unless you have an eMMC 15 which allows a bootloader unlock, but idk if it works on straighttalk
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Bootloader is unlocked by default on the ST version. It's impossible on this phone to go back to stock, once you upgrade past stock 4.4.2 you can never go back to stock. Bootloader blocks downgrades. That's why i wanted to flash a stock verizon 5.0 rom
philhalo66 said:
Bootloader is unlocked by default on the ST version. It's impossible on this phone to go back to stock, once you upgrade past stock 4.4.2 you can never go back to stock. Bootloader blocks downgrades. That's why i wanted to flash a stock verizon 5.0 rom
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Install TWRP, flash a Verizon bootloaderless rom like one from cvertigo1
GeTex said:
Install TWRP, flash a Verizon bootloaderless rom like one from cvertigo1
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I already got TWRP and CM11 running so im half way there. I never heard of a bootloaderless rom, i'll definitely check it out.
My phone is MOTO X PLAY XT1562 2gb dual sim variant. For trying out custom rom i unlocked the bootloader, installed twerp and flashed the custom rom. But for some reasons I hated it and tried to revert back to the stock rom. So I downloaded a rom for my XT1562 and flashed it and locked my bootloader. The fastboot screen shows that the bootloader is locked with status code 2. But still unlocked bootloader warning appears. I just need to know the explanation of the Firmware naming so that i can find the exact firmware for my device and flash it properly. Or anyone please find me the stock rom for my device. I'll provide my phone's information if required.