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.
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So I was able to root for the first time with Towelroot. That was successful and the I downloaded the clockwork mod and rom manager to attempt to flash Cyanogenmod. however after installing those two apps I restarted and when it booted up it now only shows the error message "System software not authorized by Verizon Wireless has been found on your phone. Please turn off your phone and go to the nearest Verizon Wireless store for help. I do believe that I created a backup on my SD card but I cannot access it and I cant seem to be able to even use Odin to get my phone back to stock Kit Kat firmware. Can somebody please help figure out how to get my phone to boot back up and hopefully keep my root intact?
If your on a retail note, you can't run cm so you would need to Odin back to stock nc4 and re root with towel root and install safe strap recovery . If on developer note 3 dis regard and wait for someone with a dev phone to answer.?
thanks
Okay thanks but wouldn't that just put me back into a bootloop again? using safestrap and towelroot put me in this situation and I don't know what caused this issue and I would like to avoid it at all if possible on my next attempt. Is it because I didn't unlock the bootloader?
Tay-lin said:
Okay thanks but wouldn't that just put me back into a bootloop again? using safestrap and towelroot put me in this situation and I don't know what caused this issue and I would like to avoid it at all if possible on my next attempt. Is it because I didn't unlock the bootloader?
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You can't unlock the bootloader on a retail Note 3.
Towelroot and Safe strap didn't get you in this situation.
You need to do a bit more research and read up before continuing.
All we have is root.
Safe strap is needed to run custom roms.
There are no custom kernels available since the bootloaders locked.
So don't try to use cwm.
Try to get your phone in download mode and odin the stock tar then root again and install Safstrap 3.75 build 4.
I have a Samsung Galaxy s4 at&t I just upgrade it to 4.4.4 kitkat using safetra recovery method and I want to install a custom tom that y I wanna install cwm recovery from Loki but I find it difficult to install one of my told me I should unlock the boot loader that it will work then I search every forum to unlock the boot loader but I can't find and I saw the EZ UNLOCK4 APK after I install it I click unlock it says unlock successfully the I power my phone to try boot to recovery that how my phone totally dead have replace the Battery still same to power on no sign on PC pls help me pls.
Can USB JIG work on it?
Someone should help me pls
What did you flash on it prior to it bricking? If it won't turn on there's nothing much you can do. You could try jtag. Google mobiletechvideos.com
Sent from my Nexus 5 using XDA Free mobile app
SOJAYeverlast said:
I have a Samsung Galaxy s4 at&t I just upgrade it to 4.4.4 kitkat using safetra recovery method and I want to install a custom tom that y I wanna install cwm recovery from Loki but I find it difficult to install one of my told me I should unlock the boot loader that it will work then I search every forum to unlock the boot loader but I can't find and I saw the EZ UNLOCK4 APK after I install it I click unlock it says unlock successfully the I power my phone to try boot to recovery that how my phone totally dead have replace the Battery still same to power on no sign on PC pls help me pls.
Can USB JIG work on it?
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Yes, a USB jig will work to put the phone into download/odin mode. You can't use LOKI or Clockwork mod recovery on the at&t galaxy s4 unless you are on the MDL bootloader running Android jelly bean 4.2.2, and no you cannot downgrade if you are on kitkat. You can't unlock the bootloader either as at&t has it locked up tight. If you are on kitkat, then you must use safe strap for ROMs.
StoneyJSG said:
Yes, a USB jig will work to put the phone into download/odin mode. You can't use LOKI or Clockwork mod recovery on the at&t galaxy s4 unless you are on the MDL bootloader running Android jelly bean 4.2.2, and no you cannot downgrade if you are on kitkat. You can't unlock the bootloader either as at&t has it locked up tight. If you are on kitkat, then you must use safe strap for ROMs.
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Once you get phone in Download mode Odin MB1 stock then after you setup phone you can Update it back to 4.4.4 in settings. http://forum.xda-developers.com/showthread.php?t=2674223
So I have been having a really hard time trying to get TWRP installed. And now I understand why, it's because it's AT&T and it has a locked bootloader. But being the stupid me I sometimes am, I installed it with Flashify. It succesfully installed! But oh wait.... The bootloader is LOCKED and now whenever I try to boot into recovery I just get this message 'System software not authorized by AT&T has been found on your phone.' And I don't know how to fix this. I just really want a custom recovery so I can install customs ROMs. Thanks for any help in advance
TechGuyYT said:
So I have been having a really hard time trying to get TWRP installed. And now I understand why, it's because it's AT&T and it has a locked bootloader. But being the stupid me I sometimes am, I installed it with Flashify. It succesfully installed! But oh wait.... The bootloader is LOCKED and now whenever I try to boot into recovery I just get this message 'System software not authorized by AT&T has been found on your phone.' And I don't know how to fix this. I just really want a custom recovery so I can install customs ROMs. Thanks for any help in advance
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Well, first I think you may need to flash a stock ROM to get rid of that message.
Next, the custom recovery you are looking for is called SafeTrap. Similar to TWRP, but it should work with locked bootloaders.
GDReaper said:
Well, first I think you may need to flash a stock ROM to get rid of that message.
Next, the custom recovery you are looking for is called SafeTrap. Similar to TWRP, but it should work with locked bootloaders.
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But I am running Android Lollipop, will SafeTrap work? Do I still need to flash a stock ROM? And If I need to, should I use Odin to do it?
TechGuyYT said:
But I am running Android Lollipop, will SafeTrap work? Do I still need to flash a stock ROM? And If I need to, should I use Odin to do it?
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The only way to flash stock is with Odin. Or Kies.
I don't know if it will work on lollipop, due to the bootloader being locked tighter.
But if it doesn't work, then nothing will.
TechGuyYT said:
But I am running Android Lollipop, will SafeTrap work? Do I still need to flash a stock ROM? And If I need to, should I use Odin to do it?
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If your phone is AT&T S4 (SGH-i337), the highest firmware available is NB1 firmware cooked by muniz_ri . You can get it from here.
You can flash that with odin. Once you are in NB1 you can root the phone and upgrade back to lollipop. You can read the instructions and get the required files here.
As SGH-i337 has locked bootloader the available custom rom flashers are safestrap and flashfire. Using safestrap in lollipop is pain in the neck so I use the flashfire.
You are also in the wrong form IMHO. There is a separate forum for SGH i-337. You can find it here.
The i337 cannot accept a custom recovery other than safestrap and custom roms must be based on a stock s4 rom which means no cm or aosp.
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 have sg4 activate unlocked att software that it's unlocked can I install custom recovery or do have to do the whole firmware downgrade thing I have no pc so I don't wanna brick it it's rooted but with king root I bricked a sg4 damb near killed the recovery by not knowing better but it was locked at gave me unlock code I think that's my boot loader but I'm not sure safestrap defetes my perpouse of stream lining wanna try a customer from for the first time any body walk me through a safe way to proceed can't brick this ****er please
If the bootloader is locked, you won't be able to install a twrp or Cwm and you can only use custom roms that are based on a stock ROM.