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[Q] How to re-lock bootloader

My carrier (C Spire) has found a problem with the device on their network that makes the device lose it's signal all the time. They claim it is a device problem anyway. I have unlocked the bootloader on the phone, but have not flashed any roms or made any other changes to the phone. Just the unlocked bootloader. They have said that since they know it is a problem with the device, they will let owners come in and exchange the phone for a Galaxy SIII free and clear. The only stipulation is it has to be in like new condition. My phone is perfect except for the unlocked bootloader. They'd probably never notice if it wasn't for that notification screen when the phone reboots that would tell them. I need to relock the bootloader to make that screen go away.
So, my question is, how do I do that? I've tried doing 'fastboot oem lock' but that doesn't work.
This is what I get when I try:
Code:
C:\Users\adear\AppData\Local\Android\android-sdk\platform-tools>fastboot oem lock
...
(bootloader) FAIL: Please run fastboot oem lock begin first!
OKAY [ 0.014s]
finished. total time: 0.016s
If I run the command as it suggests I get:
Code:
C:\Users\adear\AppData\Local\Android\android-sdk\platform-tools>fastboot oem lock begin
...
(bootloader) Ready to flash signed images
OKAY [ 0.246s]
finished. total time: 0.248s
I'm not sure what to do to get it to lock again.
Can anyone please help?

The problem is, you've unlocked it 'officially' from Moto... so it's registered in the database as unlocked.
You can try to change the boot logo, I haven't tried yet... Supposedly you can to get rid of that annoying screen.
Maybe you will just have to take it in and hope they don't reboot it. Kinda sucks that we have official unlocks now, because they can now easily track who has unlocked their phones and who hasn't :/

According to Moto, you can relock the bootloader, although the warranty remains voided. I know Moto knows about it, but I doubt very much that the carrier is going to go so far as to check it.
I just need to know why the 'fastboot oem lock' command didn't work. And what I can do to relock it.

adear11 said:
According to Moto, you can relock the bootloader, although the warranty remains voided. I know Moto knows about it, but I doubt very much that the carrier is going to go so far as to check it.
I just need to know why the 'fastboot oem lock' command didn't work. And what I can do to relock it.
Click to expand...
Click to collapse
Did you try using the same key to unlock to relock?
I've never bothered relocking...

arrrghhh said:
Did you try using the same key to unlock to relock?
I've never bothered relocking...
Click to expand...
Click to collapse
Is the key required to relock? I had not tried using it.

adear11 said:
Is the key required to relock? I had not tried using it.
Click to expand...
Click to collapse
I said I've never tried to relock.
It makes sense tho. Same process to relock as it was to unlock. Give it a shot, what do you have to lose.

arrrghhh said:
I said I've never tried to relock.
It makes sense tho. Same process to relock as it was to unlock. Give it a shot, what do you have to lose.
Click to expand...
Click to collapse
Just gave it a try, got the same result. "Fail: Please run fastboot oem lock begin first!"

adear11 said:
Just gave it a try, got the same result. "Fail: Please run fastboot oem lock begin first!"
Click to expand...
Click to collapse
You entered fastboot oem lock begin <key>?

arrrghhh said:
You entered fastboot oem lock begin <key>?
Click to expand...
Click to collapse
When I do 'fastboot oem lock begin [key]' I get "(bootloader) Ready to flash signed images".
From here, if I do 'fastboot oem lock' again, I get "Re-Lock Failure. See display." On the phone's display, I get:
Code:
No valid PIV block in SP for system
piv validation failed (system)
Re-lock failure

Hrm. I was poking around Moto's FAQ's and community site, and they talk about relocking - but not in detail unfortunately. They cryptically state that they will not release any stock recoveries at this time - so perhaps if you don't have the stock recovery, you can't relock...?
I would post up on Moto's forums or call their support... Not sure how much help they will be, but their website leaves much to be desired about the relocking process...

oh dear some anonymous person had pasted motorola's flashing script, perhaps you can use it to figure out how to fix your device
http://pastebin.com/Ca8wcGAv windows
http://pastebin.com/SnxrbdaW linux/mac
im just really glad i happened to be browsing around pastebin and found that in it.

shabbypenguin said:
oh dear some anonymous person had pasted motorola's flashing script, perhaps you can use it to figure out how to fix your device
http://pastebin.com/Ca8wcGAv windows
http://pastebin.com/SnxrbdaW linux/mac
im just really glad i happened to be browsing around pastebin and found that in it.
Click to expand...
Click to collapse
so, if one were interested in using this anonymous persons script, how would one proceed?

adear11 said:
so, if one were interested in using this anonymous persons script, how would one proceed?
Click to expand...
Click to collapse
i would imagine gathering all the files and putting them in the proper spots/folders would assemble a replica of this script. i was just mentioning you should look thru to see if there is anything taht helps you tho

In short, in order to relock the bootloader, you have to flash signed software in the process.

Ugh why did I try this lol.. Still having problems. I restarted my computer and that fixed the problem "waiting for device" now in cmd it will at least recognize the phone BUT, I get this trying to figure out some information
getvar:cid FAILED (command write failed (unknown error))

[Q] Problems with SE Bootloader Unlocker for Miro

So I finally menage to root my Miro using UnlockRoot but now trying to unlock the bootloader with SE Bootloader Unlocking using step-by-step instructions from ht tp://forum.xda-developers.com/showthread.php?t=1560613.
After typing IMEI code (14 of 15 digits) it gets stuck at getting unlock code, so my real question is: can I flash custom ROM without unlocking the bootloader?!

oFFgotoFF said:
So I finally menage to root my Miro using UnlockRoot but now trying to unlock the bootloader with SE Bootloader Unlocking using step-by-step instructions from ht tp://forum.xda-developers.com/showthread.php?t=1560613.
After typing IMEI code (14 of 15 digits) it gets stuck at getting unlock code, so my real question is: can I flash custom ROM without unlocking the bootloader?!
Click to expand...
Click to collapse
When you write IMEI code just delete latest number!!! Same was with me when i go unlock bootloader,its write on SE UB page if "needed delete latest number" )
Enjoy
Sent from my Xperia J using xda app-developers app

or alternatively try the command prompt method

c4cyro said:
or alternatively try the command prompt method
Click to expand...
Click to collapse
how to do that? what do I type in cmd?
When you write IMEI code just delete latest number!!! Same was with me when i go unlock bootloader,its write on SE UB page if "needed delete latest number
Click to expand...
Click to collapse
done that and it still won't give me unlock code....maybe it has something to do with inability to unlock bootloader?

Yes. You should first check if bl unlocking allowed on your phone.
If yes, You should see this
https://sites.google.com/site/projectfreexperia/download/bootloader-unlock
Also, there is a step by step guide on the sony website.
Also are the fastboot drivers properly installed on your computer?
The other thing is that the bl unlocking tool provided here in the forum, didnt work for my friend's tipo also. That program uses flashtool already present in its folder.
What i have noticed is that particular version of flashtool does not recognize miro/tipo. So maybe thats the issue.
Anyways you should refer the link i gave or the sony website.
Sent from my ST23i

It says that bootloader can't be unlocked but I was hoping that someone already menaged to avoid this blockage...or is there any way of flashing custom ROM with bootlocker locked?
Sent from my ST23i using xda app-developers app

sorry man i dont have any idea about that then. maybe you should talk to some dev.

[Sony Xperia E] Can't unlock bootloader

Hi!
First, my apoligize if such theme already exist.
I followed all instruction and the time when I supposed to finale unlock bootloader I get this message in cmd:
<bootloader> Unlock phone requested
FAILED < remote: oem unlock failed!>
Finished. total time: 0.054s
I appreciate any help.

Try to use Flashtools integrated BLU button. Easier than the official method! I had the same problem as yours, but Flashtool worked for me.
Success!
Sent by magic!

MatsPunt said:
Try to use Flashtools integrated BLU button. Easier than the official method! I had the same problem as yours, but Flashtool worked for me.
Success!
Sent by magic!
Click to expand...
Click to collapse
I tried, not working either.
26/038/2013 18:38:22 - INFO - Device connected in flash mode
26/038/2013 18:38:25 - INFO - Please connect your device into flashmode.
26/038/2013 18:38:25 - INFO - Opening device for R/W
26/038/2013 18:38:26 - INFO - Reading device information
26/038/2013 18:38:26 - INFO - Phone ready for flashmode operations.
26/038/2013 18:38:26 - INFO - Current device : C1505 - - 1272-2041_R1E - 1267-9537_11.3.A.0.16 - WORLD-i_11.3.A.0.16
26/038/2013 18:38:26 - INFO - Processing loader.sin
26/038/2013 18:38:26 - INFO - Checking header
26/038/2013 18:38:26 - INFO - Flashing data
26/041/2013 18:41:04 - INFO - Please connect your device into flashmode.
26/041/2013 18:41:04 - INFO - Opening device for R/W
26/041/2013 18:41:04 - INFO - Reading device information
26/041/2013 18:41:04 - INFO - Unable to read from phone after having opened it.
26/041/2013 18:41:04 - INFO - trying to continue anyway
26/041/2013 18:41:06 - INFO - Processing loader.sin
26/041/2013 18:41:06 - INFO - Checking header
26/041/2013 18:41:06 - ERROR - Error in processHeader : 6 : The handle is invalid.
26/041/2013 18:41:06 - INFO - Your phone bootloader cannot be officially unlocked
26/041/2013 18:41:06 - INFO - You can now unplug and restart your phone
Silly question, do I need to root phone first?

dulejr said:
Silly question, do I need to root phone first?
Click to expand...
Click to collapse
No, you don't. But are you sure your bootloader can be unlocked? Have you checked in the service menu?
Because Flashtool says "device can't officially be unlocked"!
Sent by magic!

MatsPunt said:
No, you don't. But are you sure your bootloader can be unlocked? Have you checked in the service menu?
Because Flashtool says "device can't officially be unlocked"!
Sent by magic!
Click to expand...
Click to collapse
I checked, it can be unlocked. Can this procces be affected by me trying to gain root akcess earlier?

dulejr said:
I checked, it can be unlocked. Can this procces be affected by me trying to gain root akcess earlier?
Click to expand...
Click to collapse
Sorry for double post, now I maganed to pass that error I mention in second post but now I get again the first one.

dulejr said:
Hi!
First, my apoligize if such theme already exist.
I followed all instruction and the time when I supposed to finale unlock bootloader I get this message in cmd:
<bootloader> Unlock phone requested
FAILED < remote: oem unlock failed!>
Finished. total time: 0.054s
I appreciate any help.
Click to expand...
Click to collapse
Hey I guess from the message from Flashtool, You've got an Un-unlockable bootloader. I had this and used the site PhoneUnlockServer.com to Unlock My Xperia E C1505 Remotely even though bootloader unlock allowed was: No!
This method would cost you £10 in the UK!

UltraGamerHD said:
Hey I guess from the message from Flashtool, You've got an Un-unlockable bootloader. I had this and used the site PhoneUnlockServer.com to Unlock My Xperia E C1505 Remotely even though bootloader unlock allowed was: No!
This method would cost you £10 in the UK!
Click to expand...
Click to collapse
Well mine bootloader unlock is Yes.
And I am from Serbia.

dulejr said:
Well mine bootloader unlock is Yes.
And I am from Serbia.
Click to expand...
Click to collapse
That's Odd... What currency do you use?

dulejr said:
Well mine bootloader unlock is Yes.
And I am from Serbia.
Click to expand...
Click to collapse
Strange. Have you installed Fastboot and Flashmode drivers? Don't know if this will help, but you can always try. Otherwise: create a backup, flash a stock.ftf, and try again.
A backup is always handy. Becuase after unlocking the C1505 always goes into a bootloop!
Sent by magic!

MatsPunt said:
Strange. Have you installed Fastboot and Flashmode drivers? Don't know if this will help, but you can always try. Otherwise: create a backup, flash a stock.ftf, and try again.
A backup is always handy. Becuase after unlocking the C1505 always goes into a bootloop!
Sent by magic!
Click to expand...
Click to collapse
Phone ready for flashmode operations.
26/052/2013 20:52:08 - INFO - Current device : C1505 - - 1272-2041_R1E - 1267-9537_11.3.A.0.16 - WORLD-i_11.3.A.0.16
26/052/2013 20:52:08 - INFO - Processing loader.sin
26/052/2013 20:52:08 - INFO - Checking header
26/052/2013 20:52:08 - INFO - Flashing data
26/052/2013 20:52:12 - INFO - Loader : S1_Root_a8a4 - Version : R5D030 / Boot version : R10D030 / Bootloader status : ROOTABLE
26/052/2013 20:52:12 - INFO - Start Reading unit 000008B2
26/052/2013 20:52:12 - INFO - Reading TA finished.
26/052/2013 20:52:16 - INFO - Unlocking device
26/052/2013 20:52:16 - INFO - Writing TA unit : [00, 00, 08, B2, 00, 00, 00, 10, 44, 35, 35, 30, 37, 33, 33, 46, 31, 45, 35, 32, 39, 34, 34, 34]
26/052/2013 20:52:16 - INFO - Unlock finished
26/052/2013 20:52:25 - INFO - Ending flash session
26/052/2013 20:52:25 - INFO - You can now unplug and restart your device
I think I done it, how to check is it unlocked realy?

dulejr said:
I think I done it, how to check is it unlocked realy?
Click to expand...
Click to collapse
Yep, you've done it. Funny thing is that you can't really check... Do you have TrackID on your device? If so, try to open the app. If it gives an error, you've successfully done it. If you don't have TrackID: try to flash a custom kernel with recovery. It's almost always the first step after unlocking, and a great way to check if it's really unlocked. If Flashtool gives an error, than the BLU failed.
But examining your flash tool output, I'm pretty sure it worked. Congratz!
Sent by magic!

MatsPunt said:
Yep, you've done it. Funny thing is that you can't really check... Do you have TrackID on your device? If so, try to open the app. If it gives an error, you've successfully done it. If you don't have TrackID: try to flash a custom kernel with recovery. It's almost always the first step after unlocking, and a great way to check if it's really unlocked. If Flashtool gives an error, than the BLU failed.
But examining your flash tool output, I'm pretty sure it worked. Congratz!
Sent by magic!
Click to expand...
Click to collapse
Seems I didn't, TrackID work. :crying:
I don't know what else to do, any suggestion? Can I reset my phone to fabric settings? Try all over again?

dulejr said:
Seems I didn't, TrackID work. :crying:
I don't know what else to do, any suggestion? Can I reset my phone to fabric settings? Try all over again?
Click to expand...
Click to collapse
Woohoo, easy pal . Try to flash a kernel!
Sent by magic!

It is much better to unlock your bootloader using the unlock service mentionned online for £10. You will retain all DRM keys etc so all your apps like TrackID still work.
Cheers
---------- Post added at 08:37 PM ---------- Previous post was at 08:35 PM ----------
MatsPunt said:
Strange. Have you installed Fastboot and Flashmode drivers? Don't know if this will help, but you can always try. Otherwise: create a backup, flash a stock.ftf, and try again.
A backup is always handy. Becuase after unlocking the C1505 always goes into a bootloop!
Sent by magic!
Click to expand...
Click to collapse
Not true. Sometimes the E goes into bootoop, not always.

CtrlAltDelIrl said:
Not true. Sometimes the E goes into bootoop, not always.
Click to expand...
Click to collapse
I thought the C1504 sometimes goes in a bootloop, and the C1505 always? Dunno where I got that, but I always thought so. But to pay £10 for a simple BLU? I understand if your status says: no. But otherwise, I mean TrackID can be easily replaced by SoundHound/Shazam!
But it's the OP's choice. I suggest he tries to flash a kernel to see if he succeeded.
Have a nice day!
Sent by magic!

MatsPunt said:
I thought the C1504 sometimes goes in a bootloop, and the C1505 always? Dunno where I got that, but I always thought so. But to pay £10 for a simple BLU? I understand if your status says: no. But otherwise, I mean TrackID can be easily replaced by SoundHound/Shazam!
But it's the OP's choice. I suggest he tries to flash a kernel to see if he succeeded.
Have a nice day!
Sent by magic!
Click to expand...
Click to collapse
£10 isn'tmuch to save so much hassle and retain DRM keys really. I agree to flash any custom kernel now to verify but it should be ok.
Same to you, have a nice day

Hey guys...it's not that difficult.. @MatsPunt all you gotta do is just type the code *#*# blah blah #* and check the bl status..it'll say bootloader unlock status:rooted.(if unlocked)
Otherwise it'll say bl.unlock allowed :yes
thank you......
regards,
moose.

Xmoose said:
Hey guys...it's not that difficult.. @MatsPunt all you gotta do is just type the code *#*# blah blah #* and check the bl status..it'll say bootloader unlock status:rooted.(if unlocked)
Otherwise it'll say bl.unlock allowed :yes
thank you......
regards,
moose.
Click to expand...
Click to collapse
I know about that . I've done it myself.
Sent by magic!

dulejr said:
Well mine bootloader unlock is Yes.
And I am from Serbia.
Click to expand...
Click to collapse
Hey it would cost 1368.76 Serbian Dinar Used Currency Converter on Google!

[Q] Can Bootloader be unlocked

my Xperia L C2104 device does not show any YES or NO in the bootloader unlock allowed section of service configuration.
It only shows like this:
Bootloader Unlock Allowed
and no yes or no after that.
Also I tried to unlock the bootloader previously via official method but it showed Error: Bootloader cant be unlocked officially.
Help me guys, Can the Bootloader be unlocked in my device and if yes HOW? Any Unofficial method there for unlocking bootloader plz convey that...also m a NOOB so simpler language appreciated :silly:

mirhimayun said:
my Xperia L C2104 device does not show any YES or NO in the bootloader unlock allowed section of service configuration.
It only shows like this:
Bootloader Unlock Allowed
and no yes or no after that.
Also I tried to unlock the bootloader previously via official method but it showed Error: Bootloader cant be unlocked officially.
Help me guys, Can the Bootloader be unlocked in my device and if yes HOW? Any Unofficial method there for unlocking bootloader plz convey that...also m a NOOB so simpler language appreciated :silly:
Click to expand...
Click to collapse
Your device says your bootloader can be unlock..did you tried with flashtool?

faizalotai said:
Your device says your bootloader can be unlock..did you tried with flashtool?
Click to expand...
Click to collapse
I think The official method also includes the flashtool method.
or is there any other method using flashtool. plz convey tht method if any.
Also the phone doesnt show YES or NO in the bootloader unlock allowed option.

mirhimayun said:
I think The official method also includes the flashtool method.
or is there any other method using flashtool. plz convey tht method if any.
Also the phone doesnt show YES or NO in the bootloader unlock allowed option.
Click to expand...
Click to collapse
The phone doesn't need to only show YES or NOT.
It can also be ALLOWED or NOT ALLOWED.... which is practictly the same thing dont you think?
For sony devices bootloader can only be unlocked this way
http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/ (just follow the steps)

vuk030 said:
The phone doesn't need to only show YES or NOT.
It can also be ALLOWED or NOT ALLOWED.... which is practictly the same thing dont you think?
For sony devices bootloader can only be unlocked this way
http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/ (just follow the steps)
Click to expand...
Click to collapse
Thanks for the reply...but i tried to unlock the bootloader earlier by following the exact steps that are on the sony site...but it showed the bootloader cant be unlocked officially. What to do abt that?

mirhimayun said:
Thanks for the reply...but i tried to unlock the bootloader earlier by following the exact steps that are on the sony site...but it showed the bootloader cant be unlocked officially. What to do abt that?
Click to expand...
Click to collapse
I unlocked my bootloader couple of months ago with that method but sony site was diffrend back then....they changed it.
I don't think there is another way to unlock bootloader on your sony devices except that one....

vuk030 said:
I unlocked my bootloader couple of months ago with that method but sony site was diffrend back then....they changed it.
I don't think there is another way to unlock bootloader on your sony devices except that one....
Click to expand...
Click to collapse
I also tried that method a month ago. I will try it again. but the commands given in the website arent accepted. they show error with tht commands. :crying:

I had tons of problems with this, I thought all was lost. I have win 8.1 x64 and assumed it was a driver problem and so did the unsigned driver install in windows safe mode. No dice, flashtool continued to be unable to unlock. What worked for me was re-submitting my code to sony, I got a totally different unlock code and then it worked through flashtool! Maybe give that a try? Fingers crossed!!

adoneill said:
I had tons of problems with this, I thought all was lost. I have win 8.1 x64 and assumed it was a driver problem and so did the unsigned driver install in windows safe mode. No dice, flashtool continued to be unable to unlock. What worked for me was re-submitting my code to sony, I got a totally different unlock code and then it worked through flashtool! Maybe give that a try? Fingers crossed!!
Click to expand...
Click to collapse
will surely do it again...also was thinking the same:good:

[Completed] unlocking bootloader on m4 aqua

So i am trying to unlock the bootloader on the sony xperia m4 aqua 2303 i checked if bootloader unlock is allowed and it is i enabled usb debugging i could not enable oem unlokc since the option is not in the developer settings i used flashtool for unlocking and it didnt work (i got the unlock code from sony put it in a text file in the folder with my phone serial number in the flashtool custom mydevices directory) i tried cmd didnt work again and it keeps saying failed (remote: remote: command not allowed) sry for my bad english not my native language

milenski123 said:
So i am trying to unlock the bootloader on the sony xperia m4 aqua 2303 i checked if bootloader unlock is allowed and it is i enabled usb debugging i could not enable oem unlokc since the option is not in the developer settings i used flashtool for unlocking and it didnt work (i got the unlock code from sony put it in a text file in the folder with my phone serial number in the flashtool custom mydevices directory) i tried cmd didnt work again and it keeps saying failed (remote: remote: command not allowed) sry for my bad english not my native language
Click to expand...
Click to collapse
Hello,
You may visit here All in one thread for M4 Aqua and read the entire thread thoroughly.
-Vatsal

Vatsal said:
Hello,
You may visit here All in one thread for M4 Aqua and read the entire thread thoroughly.
-Vatsal
Click to expand...
Click to collapse
thats exactly the tutorial i followed it just keeps saying failed command not allowed i guess i will have to pay to have it unlocked

milenski123 said:
thats exactly the tutorial i followed it just keeps saying failed command not allowed i guess i will have to pay to have it unlocked
Click to expand...
Click to collapse
Hello,
You may try posting in the thread I linked above, the experts there maybe able to assist you.
-Vatsal