Do I have to have bootloader unlocked? - Nexus S Q&A, Help & Troubleshooting

Does it have to be unlocked to flash a rom. I can easily unlock it. I know. I relocked it I'm anticipation of ics now am wanting to throw a rom back on. I just rerooted. Flashed cwm. Made a backup. Can I just flash oics or do I Have to unlock the bootloader first?

Hell, I'll unlock it again haha
But would still like to know the answer

U have to unlock it in order to install a custom recovery. But after that u might be able to re lock it and still keep cwm. Not sure tho
Sent from my Nexus S 4G using xda premium

From what i've gathered, you'll need CWM or similar (not necessarily a locked bootloader AFAIK) to flash a non-stock ROM, the stock recovery won't do.

I had cwm after I rooted. Was able to make a backup. I just copied all contents to PC, unlocked boot loader, then just recopied and flashed the oics43. So far a little lag here and there but nice. Seems to be more functional than the roms were a month ago

Related

[Q] Stock ROM and Custom Kernel

Just a quick question.
Say 2.3.4 stock ROM comes out. If I flash it via recovery, would I have to flash the custom kernel via recovery as well, this time without whole rooting process or would I have to start from unlocking bootloader steps?
The custom kernel might be too old or incompatible. When you upgrade you will need to go through the rooting steps again, you will most definitely lose root, I'm not sure if the bootloader relocks though, if it does just fastboot OEM unlock again, you can do that in no time
JD
Sent from my Google Black Neolithic Slab Of Wonderment S
Yes you can but you must be rooted
Sent from my Nexus S using XDA Premium App

noobs guide to flashing roms?

hello guys im new to the samsung game! im a former razr owner! but i noticed the is allot of differences in the motto hacking and the samsung hacks? i have a stock rooted Verizon galaxy s3 i downloaded the bootloader unlock app but haven't had the guts to hit the unlock button! and downloaded the ez recovery app but haven't use it ether! Im not sure where to start? i want to flash cm10 to try out the jelly bean effect! lol but i don't know where to start with that ether! and if i unlock the bootloader am i still able to flash the stock rooted rom using the same odin process that Ive done b4? do i need to back up anything? please help with a flashing guide 101 for samsung lol !
drnoob said:
hello guys im new to the samsung game! im a former razr owner! but i noticed the is allot of differences in the motto hacking and the samsung hacks? i have a stock rooted Verizon galaxy s3 i downloaded the bootloader unlock app but haven't had the guts to hit the unlock button! and downloaded the ez recovery app but haven't use it ether! Im not sure where to start? i want to flash cm10 to try out the jelly bean effect! lol but i don't know where to start with that ether! and if i unlock the bootloader am i still able to flash the stock rooted rom using the same odin process that Ive done b4? do i need to back up anything? please help with a flashing guide 101 for samsung lol !
Click to expand...
Click to collapse
See this:
forum.xda-developers.com/showthread.php?t=1837863
(sorry of the non-hyperlink, I'm not allowed)
You have everything you need. If you're rooted, unlock the bootloader using the app you have, flash the non-touch cwr 6.0.1 or 6.0.2 using the ez recovery app or rom manager, then download cm10 and appropriate latest jelly bean gapps, boot into recovery from rom manager or pull battery hold volume up+home +power. From there, do a nandroid backup first, then wipe data, cache, system, and dalvick. Now flash your cm10 or any other rom, then your gapps, profit.
Edit: no over the air updates should be accepted or you can brick that shiny phone.
The whole process is much simpler now that the bootloader is unlocked.
Sent from my SCH-I535 using xda premium
thanks for the info! so say I'm on a custom Rom with my boot loader unlocked and i want to go back to stock rooted, would i just flash the stock rooted image? and won't that lock the boot loader again?
Sent from my SCH-I535 using Tapatalk 2
drnoob said:
thanks for the info! so say I'm on a custom Rom with my boot loader unlocked and i want to go back to stock rooted, would i just flash the stock rooted image? and won't that lock the boot loader again?
Sent from my SCH-I535 using Tapatalk 2
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Depends if you're on an AOSP based rom. If so, you'll need to flash a stock kernel and a full wipe is also necessary. Otherwise you should pretty much just be able to dirty flash over any stock based roms.
No, it won't relock the bootloader. That's a separate process.

custom opened padlock

i rooted my s3, then i unlocked the bootloader. i still havent flashed anything but now when i reboot my phone i get the custom notification with the unlocked padlock. did i do something wrong or is this normal.
edit: i used a windows based program to root and i used twrp to flash the unlocked bootloader
I am waiting on a stable completely functioning rom before flashing.
krbernier said:
i rooted my s3, then i unlocked the bootloader. i still havent flashed anything but now when i reboot my phone i get the custom notification with the unlocked padlock. did i do something wrong or is this normal.
edit: i used a windows based program to root and i used twrp to flash the unlocked bootloader
I am waiting on a stable completely functioning rom before flashing.
Click to expand...
Click to collapse
Sounds like it's not unlocked if you still have the custom boot screen. What method did you use to unlock?
You are not unlocked. When your bootloader is unlocked that Samsung screen just flies by. No padlock no waiting.
Sent from my SCH-I535 using Tapatalk 2
Thanks! i used a windows batch file to do the unlock...guess ill give it another go.
worked thanks!
My SGiii now does this when booting. I have root. I used the devFS root method. I to my knowledge I have not flashed the boot loader. Is this what people were talking about by adding one to there flash counter? If so I might as well flash cwm.
Is my warranty void now?
Sent from my SCH-I535 using xda app-developers app
Xiuix said:
My SGiii now does this when booting. I have root. I used the devFS root method. I to my knowledge I have not flashed the boot loader. Is this what people were talking about by adding one to there flash counter? If so I might as well flash cwm.
Is my warranty void now?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
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Has nothing to do with flash counter. It shows that software is modified and is caused by root. Unlocking the bootloader will get rid of lock. Warranty is void only if you don't revert to stock before return.

New guy

Hello guys I just got may galaxy S3 from a friend. I think the bootloader is still unlocked after I received an OTA today. I don't have root or recovery. I just want to be sure I use the correct root and recovery method. Could someone point me to the one they used on this build with success? I would be greatly appreciated. I did look but none are specific enough for me to be sure I'm using the correct one.
Is my bootloader still unlocked if it says (custom)?
Again I appreciate any help
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mike216 said:
Hello guys I just got may galaxy S3 from a friend. I think the bootloader is still unlocked after I received an OTA today. I don't have root or recovery. I just want to be sure I use the correct root and recovery method. Could someone point me to the one they used on this build with success? I would be greatly appreciated. I did look but none are specific enough for me to be sure I'm using the correct one.
Is my bootloader still unlocked if it says (custom)?
Again I appreciate any help
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Welcome! In order to unlock your BL in the first place you must have had root. This is a good thread on rooting, unlocking, and flashing recovery/ROMs/kernels:
http://forum.xda-developers.com/showthread.php?t=1762709
nghtrain88 said:
Welcome! In order to unlock your BL in the first place you must have had root. This is a good thread on rooting, unlocking, and flashing recovery/ROMs/kernels:
http://forum.xda-developers.com/showthread.php?t=1762709
Click to expand...
Click to collapse
Thanks so much bud! Will I be all good on the updated build I received today?
My bootloader is unlocked if it says custom on boot?
Again I really appreciate it!
Sent from my SCH-I535 using xda premium
mike216 said:
Thanks so much bud! Will I be all good on the updated build I received today?
My bootloader is unlocked if it says custom on boot?
Again I really appreciate it!
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
As long as you have one of the stock builds listed in section 2 of that thread you should be good. The EZ-unlock app should be able to tell you if you're BL is unlocked.. also if you reboot the phone, if the samsung splash flashes for a split second (the one before you see Samsung Galaxy SIII), then you're prob unlocked.. if you see it for a few seconds then you're prob locked
Man I rooted flashed recovery in rom manager. (recovery wouldn't stick) so I flashed it again after making a nandroid and ended up having to recover a soft brick at 4am. Thank God for puremotive's guide on how to recover from it I was able to be back up. I don't know what went wrong. Because I didn't have busy box. Maybe I shouldn't have used the latest recovery rom manager flashes? I'm on stock with root and afraid to move anywhere! Anyone know how to make recovery stick on stock rom? I've never had this happen. Usually I would be OK and on to try AOSP on other devices uve had. Right now I'm rooted on stock rom with bootloader unlocked and have OTA root keeper in case I get another OTA. Any help would be greatly appreciated! Take care
Sent from my SCH-I535 using xda premium
How did you unlock your bootloader?
annoyingduck said:
How did you unlock your bootloader?
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With the app
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Ok, issue is probably that you used the current version 1.4 I think. In the app description in the playstore is a link to older versions, you want 1.2. The new ones are unlocking, but it's not sticking. There is also a link in the current root guide somewhere, but direct from the play store is fine.
annoyingduck said:
Ok, issue is probably that you used the current version 1.4 I think. In the app description in the playstore is a link to older versions, you want 1.2. The new ones are unlocking, but it's not sticking. There is also a link in the current root guide somewhere, but direct from the play store is fine.
Click to expand...
Click to collapse
link for ez-unlock 1.2
annoyingduck said:
How did you unlock your bootloader?
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Click to collapse
Let me be more specific because I may have had a locked bootloader.
I received the phone yesterday from my friend. He did unlock the bootloader with the app. I installed the official OTA from Verizon as soon as I got it. I rooted it. I didn't bother trying to unlock the bootloader because after the OTA when it booted it said custom with a lock symbol on boot up. I rooted and flashed the latest recovery from rom manager. I'm sure I picked the right phone. I made a nandroid but my recovery wouldn't stick. I remember it saying something about Co firming something about a recovery and I could have chosen yes. It sounded like CWM wouldn't stick if I choose yes?
I don't know if the OTA locked my bootloader back up?
I would like to try again. Any of you guys no how to make recovery stick on stock rom? I would like to try paranoid android. What recovery should I be on to flash this jelly bean based rom? I would really appreciate anyone who knows how I screwed up or has went straight to JB from a specific CWM recovery. I'm also not sure if I should said yes or know when in CWM when asking me that recovery question. I wish I remember what the question was
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nghtrain88 said:
As long as you have one of the stock builds listed in section 2 of that thread you should be good. The EZ-unlock app should be able to tell you if you're BL is unlocked.. also if you reboot the phone, if the samsung splash flashes for a split second (the one before you see Samsung Galaxy SIII), then you're prob unlocked.. if you see it for a few seconds then you're prob locked
Click to expand...
Click to collapse
The app doesn't actually check the bootloader. It just keeps the info in the app data. Meaning if you unlock with the app then uninstall ezunlock and then reinstall it won't know if you're locked or unlocked.
mike216 said:
Man I rooted flashed recovery in rom manager. (recovery wouldn't stick) so I flashed it again after making a nandroid and ended up having to recover a soft brick at 4am. Thank God for puremotive's guide on how to recover from it I was able to be back up. I don't know what went wrong. Because I didn't have busy box. Maybe I shouldn't have used the latest recovery rom manager flashes? I'm on stock with root and afraid to move anywhere! Anyone know how to make recovery stick on stock rom? I've never had this happen. Usually I would be OK and on to try AOSP on other devices uve had. Right now I'm rooted on stock rom with bootloader unlocked and have OTA root keeper in case I get another OTA. Any help would be greatly appreciated! Take care
Sent from my SCH-I535 using xda premium
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Click to collapse
mike216 said:
Let me be more specific because I may have had a locked bootloader.
I received the phone yesterday from my friend. He did unlock the bootloader with the app. I installed the official OTA from Verizon as soon as I got it. I rooted it. I didn't bother trying to unlock the bootloader because after the OTA when it booted it said custom with a lock symbol on boot up. I rooted and flashed the latest recovery from rom manager. I'm sure I picked the right phone. I made a nandroid but my recovery wouldn't stick. I remember it saying something about Co firming something about a recovery and I could have chosen yes. It sounded like CWM wouldn't stick if I choose yes?
I don't know if the OTA locked my bootloader back up?
I would like to try again. Any of you guys no how to make recovery stick on stock rom? I would like to try paranoid android. What recovery should I be on to flash this jelly bean based rom? I would really appreciate anyone who knows how I screwed up or has went straight to JB from a specific CWM recovery. I'm also not sure if I should said yes or know when in CWM when asking me that recovery question. I wish I remember what the question was
Sent from my SCH-I535 using xda premium
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Click to collapse
I'm 90% sure you wouldn't have been able to install the OTA if your bootloader was unlocked. The 'custom' on the boot doesn't mean that, and now that I think of it the fact you saw that proves that you aren't unlocked.
If you're still stock rooted then download the EZ unlock 1.2 from the link above and also go find EZ recovery on the market. Do not use the market version of EZ unlock. Now it doesn't matter what order you do it in but unlock your bootloader with the app them use EZ recovery to flash your recovery. Then you're all set to flash ROMs.
Brian Gove said:
The app doesn't actually check the bootloader. It just keeps the info in the app data. Meaning if you unlock with the app then uninstall ezunlock and then reinstall it won't know if you're locked or unlocked.
I'm 90% sure you wouldn't have been able to install the OTA if your bootloader was unlocked. The 'custom' on the boot doesn't mean that, and now that I think of it the fact you saw that proves that you aren't unlocked.
If you're still stock rooted then download the EZ unlock 1.2 from the link above and also go find EZ recovery on the market. Do not use the market version of EZ unlock. Now it doesn't matter what order you do it in but unlock your bootloader with the app them use EZ recovery to flash your recovery. Then you're all set to flash ROMs.
Click to expand...
Click to collapse
Thanks for everything Boss! That probably was the reason my recovery wouldn't stick. I used the link to grab easy unlock 1.2. I'm now unlocked, rooted. I want to flash an AOSP based rom (paranoid android) what recovery should I flash? The newest in rom manager or the slightly older one EZ-Recovery has to offer?
Thanks once again!
Sent from my SCH-I535 using xda premium
Cwm 6.0.1.2 for aosp jb, do not use the old 5 . something touch in ez recovery
mike216 said:
Thanks for everything Boss! That probably was the reason my recovery wouldn't stick. I used the link to grab easy unlock 1.2. I'm now unlocked, rooted. I want to flash an AOSP based rom (paranoid android) what recovery should I flash? The newest in rom manager or the slightly older one EZ-Recovery has to offer?
Thanks once again!
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Which is the recovery that you want to use? I have the latest CWM touch on my Dropbox if that's the one you want. The regular CWM in the app is fine to use and twrp recovery has a thread in the development forum.
Brian Gove said:
Which is the recovery that you want to use? I have the latest CWM touch on my Dropbox if that's the one you want. The regular CWM in the app is fine to use and twrp recovery has a thread in the development forum.
Click to expand...
Click to collapse
I'm on stock ICS in want to go to paranoid android. Sorry guys but after last night I'm paranoid myself!
Sent from my SCH-I535 using xda premium
Brian Gove said:
The app doesn't actually check the bootloader. It just keeps the info in the app data. Meaning if you unlock with the app then uninstall ezunlock and then reinstall it won't know if you're locked or unlocked.
I'm 90% sure you wouldn't have been able to install the OTA if your bootloader was unlocked. The 'custom' on the boot doesn't mean that, and now that I think of it the fact you saw that proves that you aren't unlocked.
If you're still stock rooted then download the EZ unlock 1.2 from the link above and also go find EZ recovery on the market. Do not use the market version of EZ unlock. Now it doesn't matter what order you do it in but unlock your bootloader with the app them use EZ recovery to flash your recovery. Then you're all set to flash ROMs.
Click to expand...
Click to collapse
Thanks once again! I'm now on PA after a pack of smokes! Appreciate all your help. You were absolutely right ! Recovery stuck and it flashed with no problem. I used the current recovery straight from ROM manager
Sent from my SCH-I535 using xda premium
Good, glad to hear you got it rolling.

[Q] Relock bootloader, rewipe device?

I was just wondering if I relock my bootloader does that wipe the phone like the unlocking does?
What I want to try and do is unlock it, customer recovery and backup, remove hidden apn, put back stock recovery, relock.
That way I can tether again without issue and also get updates.
Only reason I would like to stay on stock software is that there is not really many roms and no 4.1 roms that have wifi calling.
I use that alot.
Has anyone relocked there bootloader at all? LOL!
No, running fastboot oem lock won't wipe your device... At least I don't believe it did on my Raider.
Sent from my HTC One S using xda app-developers app
cool beans
because I want to try this method for removing the locked APNs on the device and see if it works.
Also just need to find the original recovery to flash on the phone too.

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