Hi guys! I have the LG P760 with V20C OPEN MARKET (Europe) official stock firmware. In the firmware's changelog I read that the bootloader is unlocked by default, but it isn't true.
I have tried to unlock bootloader using fastboot tool from command line, but after processing the phone reboot in normal mode.
How do I unlock the bootloader? I have the root and CMW on my phone, but stock firmware
BlackRam_ said:
Hi guys! I have the LG P760 with V20C OPEN MARKET (Europe) official stock firmware. In the firmware's changelog I read that the bootloader is unlocked by default, but it isn't true.
I have tried to unlock bootloader using fastboot tool from command line, but after processing the phone reboot in normal mode.
How do I unlock the bootloader? I have the root and CMW on my phone, but stock firmware
Click to expand...
Click to collapse
This generally works, i mean it worked for everyone
Just connect phone put it in usb debugging and software mode and run commands..
Btw try wiping data and cache.
Uninstall and then install every lg driver but first delete every folder left behind and if nothing works flash the v20b or v20c kdz and try again...
Sent from my LG-P765 using XDA Premium 4 mobile app
love4u_nav said:
This generally works, i mean it worked for everyone
Just connect phone put it in usb debugging and software mode and run commands..
Btw try wiping data and cache.
Uninstall and then install every lg driver but first delete every folder left behind and if nothing works flash the v20b or v20c kdz and try again...
Sent from my LG-P765 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Nothing, I tried again. I have left only re-flash v20c. Before the wiping, I should save my data by Nandroid Backup or backup App from Titanium Backup?
Buddy just save ur app data with any app like go backup etc then do nandroid backup and then reflash...
Sent from my LG-P765 using XDA Premium 4 mobile app
love4u_nav said:
Buddy just save ur app data with any app like go backup etc then do nandroid backup and then reflash...
Sent from my LG-P765 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I read that my phone isn't unlockable because I bought this device recently. Is it true or not true?
(I bought its on June 2013)
BlackRam_ said:
I read that my phone isn't unlockable because I bought this device recently. Is it true or not true?
(I bought its on June 2013)
Click to expand...
Click to collapse
All P760 are unlockable. I think all P765 are unlockable too. Only some P768 and P769 are not unlockable (for now).
BlackRam_ said:
Hi guys! I have the LG P760 with V20C OPEN MARKET (Europe) official stock firmware. In the firmware's changelog I read that the bootloader is unlocked by default, but it isn't true.
I have tried to unlock bootloader using fastboot tool from command line, but after processing the phone reboot in normal mode.
How do I unlock the bootloader? I have the root and CMW on my phone, but stock firmware
Click to expand...
Click to collapse
try with this thread http://www.htcmania.com/showthread.php?t=702752 you may find it
Related
Hey today i updated my phone to v20a india but when i m trying to unlock bootloader using fast boot my phone doesn't reboot in fastboot....
I tried using adb unlock oem command...
Tell me what to do??????
Sent from my LG-P765 using xda app-developers app
love4u_nav said:
Hey today i updated my phone to v20a india but when i m trying to unlock bootloader using fast boot my phone doesn't reboot in fastboot....
I tried using adb unlock oem command...
Tell me what to do??????
Sent from my LG-P765 using xda app-developers app
Click to expand...
Click to collapse
Your command seems wrong. what exact command you are giving?
Sry my bad not to include the command in post...
Firstly i was using rom toolbox for unlocking,cmw,rooting...
It already contain the adb command...
But that didn't work...
So i tried this thread
forum.xda-developers.com/showthread.php?t=2221102
But that also didn't work....
I think command r right may be there is another for indian version(i guess)....
Sent from my LG-P765 using xda app-developers app
love4u_nav said:
Sry my bad not to include the command in post...
Firstly i was using rom toolbox for unlocking,cmw,rooting...
It already contain the adb command...
But that didn't work...
So i tried this thread
forum.xda-developers.com/showthread.php?t=2221102
But that also didn't work....
I think command r right may be there is another for indian version(i guess)....
Sent from my LG-P765 using xda app-developers app
Click to expand...
Click to collapse
you can reboot to fastboot mode by using "adb reboot oem-unlock"
I trid adb reboot oem-unlock...
But my phone just restarts normally...
Not in fastboot...
Sent from my LG-P765 using xda app-developers app
I have the same situation with you
Sent from my LG-P765 using xda app-developers app
Plz somebody help us.....
Sent from my LG-P765 using xda app-developers app
I you think you are stuck, try Flashing P760 V20B Europe Open. Unlock bootloader permanently and then flash back any P765 rom. Some links in my signature may help you in flashing.
Ok i will try....
Sent from my LG-P765 using xda app-developers app
I have tried for many time, situation remain the same
Sent from my LG-P765 using xda app-developers app
Since i am having trouble downloading v20 europe open version....
Anybody have any other option ....
One more thing my friend has also update his phone same is happening with him also...
Sent from my LG-P765 using xda app-developers app
love4u_nav said:
Since i am having trouble downloading v20 europe open version....
Anybody have any other option ....
One more thing my friend has also update his phone same is happening with him also...
Sent from my LG-P765 using xda app-developers app
Click to expand...
Click to collapse
you may use any europe version's P760 rom to unlock your P765
btw my p765 is unlocked using europe open v20b and now upgraded to p765 v20d HongKong version
I too had the same problem on my P765 Indian version. I tried oem-unlock many times on stock JB India rom but it didn't work.
Then I have flashed JB EUROPE OPEN rom and "adb reboot oem-unlock" worked with the very first attempt (ofcourse kept the phone on for 1 hour). Once bootloader is unlocked it stays unlocked even if we flash another kdz. So, I flashed stock JB India rom to make my phone work perfectly without any (possible) issues.
Then I had trouble installing fastboot drivers on windows xp. Since fastboot drivers are not needed in linux, i just installed ubuntu 13.04 and then installed packages "android-tools-adb" and "android-tools-fastboot" from universe repository.
Then its just few commands away from having custom recovery.
sudo adb devices
sudo adb reboot oem-unlock
sudo fastboot devices
sudo fastboot flash recovery recovery.img
That's it . I now have CWM recovery.
Now i will backup the stock rom and try CM10.1
nfs1mw said:
I too had the same problem on my P765 Indian version. I tried oem-unlock many times on stock JB India rom but it didn't work.
Then I have flashed JB EUROPE OPEN rom and "adb reboot oem-unlock" worked with the very first attempt (ofcourse kept the phone on for 1 hour). Once bootloader is unlocked it stays unlocked even if we flash another kdz. So, I flashed stock JB India rom to make my phone work perfectly without any (possible) issues.
Then I had trouble installing fastboot drivers on windows xp. Since fastboot drivers are not needed in linux, i just installed ubuntu 13.04 and then installed packages "android-tools-adb" and "android-tools-fastboot" from universe repository.
Then its just few commands away from having custom recovery.
sudo adb devices
sudo adb reboot oem-unlock
sudo fastboot devices
sudo fastboot flash recovery recovery.img
That's it . I now have CWM recovery.
Now i will backup the stock rom and try CM10.1
Click to expand...
Click to collapse
I try to flash europe 20c and run the unlock command, still reboot as normal, i dont know why! I use windows 7 but not windows xp, is it related ？
Sent from my LG-P765 using xda app-developers app
cheong12001 said:
I try to flash europe 20c and run the unlock command, still reboot as normal, i dont know why! I use windows 7 but not windows xp, is it related ？
Sent from my LG-P765 using xda app-developers app
Click to expand...
Click to collapse
Insure that you have installed all the LG drivers aswell as Fastboot drivers for ti omap 4430
It could be drivers problem, I had faced similar problems until i installed fasboot drivers on my PC.
Use guide by @markolino631 Instead of typing commands use his one click tool.
It Works Great.
Try flashing P760 Eu open ROM on P765. then try again.
er.davinder said:
Insure that you have installed all the LG drivers aswell as Fastboot drivers for ti omap 4430
It could be drivers problem, I had faced similar problems until i installed fasboot drivers on my PC.
Use guide by @markolino631 Instead of typing commands use his one click tool.
It Works Great.
Try flashing P760 Eu open ROM on P765. then try again.
Click to expand...
Click to collapse
Yes, i certainly did it, but still nothing happen
Sent from my LG-P765 using xda app-developers app
er.davinder said:
Insure that you have installed all the LG drivers aswell as Fastboot drivers for ti omap 4430
It could be drivers problem, I had faced similar problems until i installed fasboot drivers on my PC.
Use guide by @markolino631 Instead of typing commands use his one click tool.
It Works Great.
Try flashing P760 Eu open ROM on P765. then try again.
Click to expand...
Click to collapse
i completely follow your step but still can't be done. i have install all the driver. and i can observe that fastboot driver works well when i restart my phone. i can enter fastboot mode well when using the method stated. however, it reboot as normal and can't unlock the bootloader too. after getting into the hidden menu, it still say that my bootloader is still locked.
i am desperated for all of your help!!!
i have try for four computer to do these procedures.!!
cheong12001 said:
i completely follow your step but still can't be done. i have install all the driver. and i can observe that fastboot driver works well when i restart my phone. i can enter fastboot mode well when using the method stated. however, it reboot as normal and can't unlock the bootloader too. after getting into the hidden menu, it still say that my bootloader is still locked.
i am desperated for all of your help!!!
i have try for four computer to do these procedures.!!
Click to expand...
Click to collapse
if everything else fails, try this, but read carefully and do all steps without skipping any part.
cmahendra said:
if everything else fails, try this, but read carefully and do all steps without skipping any part.
Click to expand...
Click to collapse
in fact, i have tried many times with complete instruction. but still fail.
cheong12001 said:
in fact, i have tried many times with complete instruction. but still fail.
Click to expand...
Click to collapse
I was having the same problem when i had flashed v20a ( Indian) offline. But as battery was draining on JB i decided to go back to ICS.
After few days i updated to JB again, but this time OTA. And to my surprise, when i tried to unlock the bootloader using this method, http://forum.xda-developers.com/showthread.php?t=2221102 , it went through in the 1st attempt :laugh:
Hey guys, could anyone of you give me a full partitiontable of our P760, because I d like to take a ,img backup via the dd command of all partitions, before I try to unlock my BL or anythingbelse. It simply always is good, to have a backup of everything, just in case
Thanks in advance.
Sent from my LG-P760 using xda app-developers app
N00BY0815 said:
Hey guys, could anyone of you give me a full partitiontable of our P760, because I d like to take a ,img backup via the dd command of all partitions, before I try to unlock my BL or anythingbelse. It simply always is good, to have a backup of everything, just in case
Thanks in advance.
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2173613
Hello !! If you are able to unlock your Bootloader with this method , may you help me ??? Because i try to unlock it but for now is impossible on my p760 , i suggest that all new p760 with Jelly Bean by default are unlockuble..Thanks
Lelus said:
http://forum.xda-developers.com/showthread.php?t=2173613
Click to expand...
Click to collapse
Well thanks, but I still cant seem to see, which partition is located where... like mmcblk0p3, is it the boot.img partition? And where does the recovery partition go? I couldnt seem to find that info in your link, or missed it thanks anyway for the fast response.
--Edit--
Sorry, I really missed it
Where did that info come from?
Sent from my LG-P760 using xda app-developers app
Juri Jacopo G said:
Hello !! If you are able to unlock your Bootloader with this method , may you help me ??? Because i try to unlock it but for now is impossible on my p760 , i suggest that all new p760 with Jelly Bean by default are unlockuble..Thanks
Click to expand...
Click to collapse
Please stop posting same thing over and over again.
N00BY0815 said:
Well thanks, but I still cant seem to see, which partition is located where... like mmcblk0p3, is it the boot.img partition? And where does the recovery partition go? I couldnt seem to find that info in your link, or missed it thanks anyway for the fast response.
--Edit--
Sorry, I really missed it
Where did that info come from?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
p769 and p760 have same partition layout so don't worry about it. it's all legit
edit: http://forum.xda-developers.com/showpost.php?p=37252797&postcount=16 you would need to revers ofs and ifs
Lelus said:
p769 and p760 have same partition layout so don't worry about it. it's all legit
edit: http://forum.xda-developers.com/showpost.php?p=37252797&postcount=16 you would need to revers ofs and ifs
Click to expand...
Click to collapse
Great, thanks does it matter, if I dump it as .img, or .bin?
Sent from my LG-P760 using xda app-developers app
N00BY0815 said:
Great, thanks does it matter, if I dump it as .img, or .bin?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
No it doesn't matter, check this post for a full system dump to your PC
http://forum.xda-developers.com/showpost.php?p=37626353&postcount=20
If you are on jellybean, change to your actually sdcard location.
Sent from my LG-P769 using xda app-developers app
kuma82 said:
No it doesn't matter, check this post for a full system dump to your PC
http://forum.xda-developers.com/showpost.php?p=37626353&postcount=20
If you are on jellybean, change to your actually sdcard location.
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
Well I did it manually I backed up xloader and u boot before and after but is it really possible, to relock the phone with those files? Anyone who tried it already? And yes I was able to unlock. It came with JB v20c preinstalled, I then rooted with the LGpawn app, installed all drivers, set it to lg software mode, waited for 30 minutes, rebooted via fastboot oem-unlock command, pushed vol up and voila lets see, how long this ROM is able to last on my phone
Sent from my LG-P760 using xda app-developers app
N00BY0815 said:
Well I did it manually I backed up xloader and u boot before and after but is it really possible, to relock the phone with those files? Anyone who tried it already? And yes I was able to unlock. It came with JB v20c preinstalled, I then rooted with the LGpawn app, installed all drivers, set it to lg software mode, waited for 30 minutes, rebooted via fastboot oem-unlock command, pushed vol up and voila lets see, how long this ROM is able to last on my phone
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
No it's not possible to relock the phone, Dump your current xloader and uboot and compare to backups and you will see that they are identical.
Omap4430 bootloader security is an efuse based, uboot only reads it's state.
N00BY0815 said:
Well I did it manually I backed up xloader and u boot before and after but is it really possible, to relock the phone with those files? Anyone who tried it already? And yes I was able to unlock. It came with JB v20c preinstalled, I then rooted with the LGpawn app, installed all drivers, set it to lg software mode, waited for 30 minutes, rebooted via fastboot oem-unlock command, pushed vol up and voila lets see, how long this ROM is able to last on my phone
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
Not sure in your case, but I'm guessing if you fastboot flash a u-boot from ice cream or a u-boot.img from a kdz that is not unlockable, It will temporarily lock your device ( will receive the lg security error), if you flash a custom recovery or boot IMG.
That is the case with the p769 version
If I'm not mistaken the x-loader is never changed. I could be wrong, I need to perform a md5 sum check on the x before and after flashing a new kdz, to be 100% sure
Sent from my LG-P769 using xda app-developers app
Hi guys
Im here cause i tried almost everything to unlock my damm bootloader and i cant. Followed the P768 tutorial for this with the roms V20b and V20c from europe open, waiting around a half hour to do adb reboot oem-unlock, but everytime the phone just reboots.
I want to know if anyone had this and how you do to solve it. Thanks in advance
Sent from my LG-P768 using xda app-developers app
Anyone?
Sent from my LG-P768 using xda app-developers app
I have the USA version sorry aha
Sent from my LG-P769 using Tapatalk 4 Beta
shucrut said:
Hi guys
Im here cause i tried almost everything to unlock my damm bootloader and i cant. Followed the P768 tutorial for this with the roms V20b and V20c from europe open, waiting around a half hour to do adb reboot oem-unlock, but everytime the phone just reboots.
I want to know if anyone had this and how you do to solve it. Thanks in advance
Sent from my LG-P768 using xda app-developers app
Click to expand...
Click to collapse
Have you tried the toolkit posted HERE?
Meda808 said:
Have you tried the toolkit posted HERE?
Click to expand...
Click to collapse
Unfortunatelly yes. Im gonna try something tomorrow morning. If i get success, i'll create a new post. If not, will cry very very loud. Thanks for the answers
Lelus said somewhere that only some carriers allow unlocking bootloader, trust me it s true, I tried unlocking on various firmwares, every time phone just reboots. I was finally able to unlock on v20A indian. But others were successful in unlocking on firmwares on which I was unsuccessful. And some waited for over 11hours and then they were able to unlock. So give a try once more. :thumbup:
Sent from my LG-P760 using xda app-developers app
Gh0sT.RPG said:
Lelus said somewhere that only some carriers allow unlocking bootloader, trust me it s true, I tried unlocking on various firmwares, every time phone just reboots. I was finally able to unlock on v20A indian. But others were successful in unlocking on firmwares on which I was unsuccessful. And some waited for over 11hours and then they were able to unlock. So give a try once more. :thumbup:
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
I'm just a little confused about this waitng time: The phone needs to be connected to pc in lg mode for 30min or the phone just needs to be with signal and internet connection for over 30 min and then connect to pc and do ad reboot oem-unlock?
Thanks for replying
I'm having the same exact problem...
I can't root/unlock either...
Still no solution for me
Sent from my LG-P768 using xda app-developers app
same issues here
I have the p769 with v20f and I have not been able to find a way too unlock my bootloader either. Help would be much appreciated.
I think the problem for some, is that the u-boot is not getting replaced while performing the offline flash. Try extracting the u-boot from the kdz and flash with fastboot to the system.
Run offline flash of 20b kdz and when the phone boots up, turn it back off and flash the u-boot you extracted from 20b, then wait 30 min (I waited longer) and try.
Sent from my LG-P769 using xda app-developers app
kuma82 said:
I think the problem for some, is that the u-boot is not getting replaced while performing the offline flash. Try extracting the u-boot from the kdz and flash with fastboot to the system.
Run offline flash of 20b kdz and when the phone boots up, turn it back off and flash the u-boot you extracted from 20b, then wait 30 min (I waited longer) and try.
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
->installed 20b open europe
->extracted u-boot from kdz file
->flashed u-boot.img
->waited 42 minutes
->tried to unlock bootloader
Still doesn't work :/
Xerdox said:
->installed 20b open europe
->extracted u-boot from kdz file
->flashed u-boot.img
->waited 42 minutes
->tried to unlock bootloader
Still doesn't work :/
Click to expand...
Click to collapse
Can you make calls on the 20b kdz
Sent from my LG-P769 using xda app-developers app
kuma82 said:
Can you make calls on the 20b kdz
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
Yes, I can.
kuma82 said:
I think the problem for some, is that the u-boot is not getting replaced while performing the offline flash. Try extracting the u-boot from the kdz and flash with fastboot to the system.
Run offline flash of 20b kdz and when the phone boots up, turn it back off and flash the u-boot you extracted from 20b, then wait 30 min (I waited longer) and try.
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
I flashed 20B u-boot but same result. I think maybe i need to stop trying, at least by now, cause im not seeing what else i can do. But if anyone has more suggestions, im ready to try
Thanks for the replies
Xerdox said:
->installed 20b open europe
->extracted u-boot from kdz file
->flashed u-boot.img
->waited 42 minutes
->tried to unlock bootloader
Still doesn't work :/
Click to expand...
Click to collapse
Did you type adb devices in command prompt? And can your comp detect your phone?
Sent from my LG-P769 using Tapatalk 4
geeshiet said:
Did you type adb devices in command prompt? And can your comp detect your phone?
Sent from my LG-P769 using Tapatalk 4
Click to expand...
Click to collapse
yes, phone was detected. When reboot oem-unlock was given the phone rebooted normally
shucrut said:
yes, phone was detected. When reboot oem-unlock was given the phone rebooted normally
Click to expand...
Click to collapse
Okay, before you do "adb reboot oem-unlock", move "Android" folder from your sdcard0 to your C: drive. Then open command prompt and type "cd c:/Android" after that type adb reboot oem-unlock.
Sent from my LG-P769 using Tapatalk 4
geeshiet said:
Okay, before you do "adb reboot oem-unlock", move "Android" folder from your sdcard0 to your C: drive. Then open command prompt and type "cd c:/Android" after that type adb reboot oem-unlock.
Sent from my LG-P769 using Tapatalk 4
Click to expand...
Click to collapse
im going to try. Right now im doing the procedure to falsh 20b again, after about an hour i will post the result
shucrut said:
im going to try. Right now im doing the procedure to falsh 20b again, after about an hour i will post the result
Click to expand...
Click to collapse
I copied Android from sdcard to C:/ but theres nothing there, i mean adb etc. Take a look:
I need to move adb files to this folder?
After updating busybox https://play.google.com/store/apps/details?id=com.bitcubate.root.busybox.complete my phone boots to a white screen that says "in coding" and only has the option of reset phone!!!
What can I do from here? I don't have a recent backup of my data and I'm still on locked bootloader with root.
My model is p760
Please help!
Update: The actual translation is "encrypting" with a reset option beneath
I never seen that error, but I would try to offline flash a kdz. Offline flash will remove any changes to the system.img and should not touch your data. However, you are probably on a jellybean kdz, so you will need to use fastboot, and flash ice x & u for it to work. Or use the longer method Lg Mobile Recovery tool (this takes longer because it will have to download the kdz from lg). If you use the recovery tool remove any changes to your host file in windows.
Sent from my LG-P769 using xda app-developers app
kuma82 said:
I never seen that error, but I would try to offline flash a kdz. Offline flash will remove any changes to the system.img and should not touch your data. However, you are probably on a jellybean kdz, so you will need to use fastboot, and flash ice x & u for it to work. Or use the longer method Lg Mobile Recovery tool (this takes longer because it will have to download the kdz from lg). If you use the recovery tool remove any changes to your host file in windows.
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
I am now trying to recover another backup with CWM. Could you give me some links to what you said earlier? It sounds like it could work
http://forum.xda-developers.com/showthread.php?p=44756934
Sent from my LG-P769 using xda app-developers app
kuma82 said:
http://forum.xda-developers.com/showthread.php?p=44756934
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
well I managed somehow to restore data over sistem backup and all is good now
Thank you for the assistance!
Hi,
I had my P769(T-mobile) running v20f for a while, everything was fine till I tried to unlock the bootloader yesterday......
I followed the http://forum.xda-developers.com/showthread.php?t=2370835, but was not aware that the bootloader unlock was unsuccessful before I used fastboot to install the cwm recovery. Then.....I got the security error when I tried to reboot the phone.
Now fastboot can connect to the phone and reflash x-loader and uboot with no problem, but I cannot get my phone into s/w upgrade mode no matter what key-combination I try...... of course the LG update tool would connect to the phone neither.....
Anyone could help me fix it? Thanks!
http://forum.xda-developers.com/showthread.php?t=2468216
You can try the recovery.img method. If that doesn't work, there is another way in that post.
Sent from my LG-P769 using XDA Premium 4 mobile app
Thank you!
But it is weird no matter what method used, I cannot get into S/W update mode........
LaDY Vengeance said:
http://forum.xda-developers.com/showthread.php?t=2468216
You can try the recovery.img method. If that doesn't work, there is another way in that post.
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
xddy1979 said:
Thank you!
But it is weird no matter what method used, I cannot get into S/W update mode........
Click to expand...
Click to collapse
Take out your battery connect to your pc with battery out...hold volume up and power. you might need to hold it for a few seconds after you see the s/w screen. What version is you phone? It happened to me on 20h.