[Q] Unlocking bootloader - LG Optimus L9 P760, P765, P768, P769

EDIT2: I finally get it unlocked... I flashed V20B EU, rooted via Lelus offline method, installed fastboot drivers and it's finally working ! I'm happy as f*ck
Hello, I'm trying to unlock bootloader, but after I use the Rom Toolkit and choose Unlock Bootlader, it just turn off and stop reacting... I must remove the battery and start it again... I have no "To unlock bootloader press volume + button" menu, it's just turned off. I tried new drivers etc. but nothing worked . Thanks for advice ^^
EDIT: I've tried to flash V20B EUROPE OPEN, still same.

Related

Problem with fastboot in my phone

Hello guys.Im new in this foroum and a newbie on android.I have a question and i would really appreciate if someone could answer.I have xperia neo v with 4.0.4 android and 2.6.32.9 kernel.I have rooted my phone with this method : http://forum.xda-developers.com/showthread.php?t=1695514
So here is my question.I want to flash a custom kernel to my phone and either with flashtool or fastboot tool it gives me an error.It says that the phone must be rooted first.I have unlocked bootloader.Thank you in advance
Why following that over-complicated tutorial, and mess with flashing GB then this, than that, when there is easier tutorial(s) on our general section..
Not sure how you unlocked your BL, but it's still locked. Actually maybe you unlocked BL, but your fastboot is still locked, which is more likely since you say that you unlock BL.
btw. please edit your thread title, to reflect your problem, so that other peoples can find it easier, if the get same problem.
thank you for your answer my friend.Now on the bootloader mater i used the secret code and says to me bootloader unlocked:yes.So the bootloader is unlocked for sure.Can you please tell me how to unlock my fastboot?
ok guys problem solved.It was the bootlader at the end.I miss understood and i thought that my bootloader was unlocked
simply if you have unlocked bootloader just
1.connect neo in fastboot mode by pressing the menu key for 2 sec and then connecting it with usb cable when the phone is switched off now the notification light turns blue now leave the phone.
2.open flashtool and press flash button
3. choose fastboot mode to flash kernel
4. on pc a screen opens in which you can see in right side by doomlord there select SELECT KERNEL TO FLASH
5. after that browse for img file of the kernel and select it and flash will be started u can see it in the main screen after flash is completed wait for 2 sec and disconnect the mobile from the pc, waiting 2 sec restart the phone ur kernel will be changed!!!!!!:fingers-crossed:
note- keep an eye on the correct kernel you choose for the correct rom!

[Q] Stuck at LG logo

Hi all!!
Yesterday i tried to install android 4.4 but the procces didnt succeed, it stuck at. LG boot logo. So i decided to restore my backup in ckockworkmod,it started the process then stopped at the phase "restoring /system" . I waited about a half hour, and because it didnt take the much time before, i took out the battery. I read somewhere that formatting the system partition in cwm could help, so i did that. Then i retried restoring my backup. It stuck at the same phase. Later i downloaded the official kdz, and decided to flash it. I could bring the phone in update mode, but the process stopped at 15% at lg update manager.
At the moment i can get into clockworkmod, but cant restore /system . The update mode is also okay. I dont know that fastboot works or not. I havent tried it yet. Please help me thanks in advance
@trapistasajt
You will need to get fastboot working and use lelus's fastboot script to flash the "u" and "x" loaders for the device and then perform the offline or online flash
http://forum.xda-developers.com/showthread.php?t=2292828
Also as you found out you cannot flash custom roms without ulocking the bootloader first and you cannot use the L9 CWM bootstrap recovery for Locked Bootloaders, too flash custom roms.
try this online flash methode with B2CAppSetup
http://forum.xda-developers.com/showthread.php?t=2085344
i had the same probleme and i fixed it .
My bootloader is unlocked. I tried the fast boot method, but it doesnt go further than "Waiting for omap...." . So, i couldnt go into fastboot (probably my fault). Yesterday i sent it to the service. If they notice that my varranty is void (because of the unlocked bl) and send it back, i will try it once more. I would be very thankful if someone could write a noob friendly-fastboot guide. As i read, lots of people are struggling with the same problem. Thanks in advance!!!
You have to use LGMobile Support Tool (Install drivers from it first) Then enter in download mode conecting the phone to pc pressing vol+ and the rest its automatic.
jufece said:
You have to use LGMobile Support Tool (Install drivers from it first) Then enter in download mode conecting the phone to pc pressing vol+ and the rest its automatic.
Click to expand...
Click to collapse
I installed the drivers but it didnt work
trapistasajt said:
I installed the drivers but it didnt work
Click to expand...
Click to collapse
what happened??
jufece said:
what happened??
Click to expand...
Click to collapse
It didnt go further than searching for "omap device", so i couldnt load fast boot, as i said. my phone is still in the service
If they 'll send it back to me, because of unlocked bootloader, i wil try it once more. Any suggestions?
trapistasajt said:
It didnt go further than searching for "omap device", so i couldnt load fast boot, as i said. my phone is still in the service
If they 'll send it back to me, because of unlocked bootloader, i wil try it once more. Any suggestions?
Click to expand...
Click to collapse
I dont know about fastboot.
LG Mobile support tool let you download the correct drivers. Then connect your phone while u keep pressing vol+ and it enters in SW Upgrade mode. Then just click "additional features" and "upgrade error recovery"
jufece said:
I dont know about fastboot.
LG Mobile support tool let you download the correct drivers. Then connect your phone while u keep pressing vol+ and it enters in SW Upgrade mode. Then just click "additional features" and "upgrade error recovery"
Click to expand...
Click to collapse
Thanks! What should i do after that? Or it will automatically flash v20h on my phone?
trapistasajt said:
Thanks! What should i do after that? Or it will automatically flash v20h on my phone?
Click to expand...
Click to collapse
It shows something about firmware ir will restore. Ir will flash the latestbfirmware from original carrier release.
For example i actuallybhave v20L but my original carrier only released v10a. It will restore to v10a
None of them works, other ideas?
This fastboot method worked for me in 5 min, pay close attention to the instructions and it works!
http://androidforums.com/optimus-l9-all-things-root/807569-guide-security-error-fix.html
Spent days with LG update tool which if you read the log has no url for files to download.
Good luck!
I got my phone back from the service. They didnt repair it, because my varranty is void. I tried the methods mentioned above.
First, I tried flashing kdz, (with the solution for post-jb problem), but i couldn't get into S/W mode, which was available before the service.
Second, since i couldn't load S/W mode, the LG upgrader wasn't successfull, too
Third, fastboot still not work.
I am sure, that im not the only person with this problem, since it happened during installing @artas182x 's JB 4.4 rom. Please @artas182x or somebody write a noob-friendly guide/suggestion which may help to unbrick my beloved phone. Thanks!!!!!

s1 fastboot xperia active st17i problem

I'm using Xperia Active st17i and i tried a everything to get into fastboot with no success, i have 2 computers, one with windows 8.1 32bit and other with windows 7 32 bit, on both of them tried everything and couldn't get into fastboot mode, tried a lot of drivers from internet, flashtool drivers, and when i turn off phone, wait 5-10 seconds, hold volume + button and plug usb into phone, the phone just turn on normaly and start charging
Can anyone help ?
Thanks in advance.
senadin001 said:
I'm using Xperia Active st17i and i tried a everything to get into fastboot with no success, i have 2 computers, one with windows 8.1 32bit and other with windows 7 32 bit, on both of them tried everything and couldn't get into fastboot mode, tried a lot of drivers from internet, flashtool drivers, and when i turn off phone, wait 5-10 seconds, hold volume + button and plug usb into phone, the phone just turn on normaly and start charging
Can anyone help ?
Thanks in advance.
Click to expand...
Click to collapse
did you unlock your bootloader?? (can do this on sony official site...)
to use fastboot you need to unlock your bootloader.
bejunk said:
did you unlock your bootloader?? (can do this on sony official site...)
to use fastboot you need to unlock your bootloader.
Click to expand...
Click to collapse
Ohh, how can i unlock my bootloader when...when i bought my phone i chacked if bootloader can be unlocked, and bootloader unlock allowed was "YES", and i factory reset phone, and now bootloader unlock allowed status is "NO", how can that be possible?
senadin001 said:
Ohh, how can i unlock my bootloader when...when i bought my phone i chacked if bootloader can be unlocked, and bootloader unlock allowed was "YES", and i factory reset phone, and now bootloader unlock allowed status is "NO", how can that be possible?
Click to expand...
Click to collapse
hmm that sounds crazy. idk how this could be.....
but what you can do is:
1. download sony pc companion software & reset, repair or update the phone if avaiable.
=> if still bootloader unlock allowed: NO then:
2. download & install flashtool. after iit install install its drivers from flashtool/drivers folder (need your phone driver + fastboot + flash driver) optional: install android SDK. (just leave all it is & press install packages.) if you done, flash a stockICS.ftf (<= firmware) like shown on this page: http://talk.sonymobile.com/t5/Android-development/GUIDE-How-to-Install-Jelly-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389 (you can download the firmware there, just make sure you choose your model right. use ICS .587) (boot once)
now look if bootloader unlock allowed....
if still : NO, then maybe ask your carrier where u get this phone. normally if your contract is end, they unlock your device for free (its here like that.)
you can also try just to request a code from sony site & try to unlock it maybe you are lucky. (you said you was allowed on pre version)
good luck!!!
the thing is if your bootloader locked = no cutom kernels = NO JB or KK rom for you. only stock based custom roms for locked bl...

relock bootloader and may be unbrick (lg p765 v20c india)

Accidently I relock bootloader and may be unbrick (lg p765 v20c india) (need to confirm and reedit by devs)
I have lg p765 with unlocked bootloader (checked by software upgrade mode shows unlocked bootloader and installed recovery also flashed 2-3 roams priviously)
i follow this thread to root and unlock bootloader http://forum.xda-developers.com/showthread.php?t=2778839
after 3-4 month I flash new cwm recovery 6.0.4.8 no-touch from this thread http://forum.xda-developers.com/showthread.php?t=2733471
Recovery & phone works great but when I go to recovery by power option (gravity box xposed installer ) (usually I use this option and it works ) and it do not go to recovery but stuck at lg logo and do not boot (i don’t know culprit of this either gravity box or recovery or may be something else) try to restart by removing battery but it didn’t worked (I haven’t try pressing power button for 10 second and restart because at that time I don’t know this ) try many method hard reset by pressing combination of button but still not work and I think my phone gets bricked now what to do??
Now I follow [GUIDE] [UNBRICK][ROOT] FLASH Any LG L9 Factory ROM (kdz) WITH OFFLINE FIX
Link http://forum.xda-developers.com/showthread.php?t=2085344
My phone goes to software upgrade mode this is my benefit (by pressing volume up key and inserting usb cable while phone is switched off) but problem is as I have previously installed or u can say flashed jb 4.1.2 so phone must be on and then go to software upgrade mode by software only so flashing process stops at 14% or may be driver not get installed as in adb also my phone didn’t show up
I search many thread and download fastboot.zip from this thread http://forum.xda-developers.com/showthread.php?t=2292828
• Extract fastboot archive somewhere like C:\fastboot follow readme.txt file
• I use option 1 fastboot I clear cache or something like this (actually I experiment many things but didn’t work and command I use also don’t know right now as I searched many thread ) after that try option no 6 p760 flash jb xloader and uboot but not worked. don’t try.
• Then I use option 3 p765 ics xloader uboot
• After that i try to hard reset but security error (before that I know it sows security error but I still try)
• And this time [GUIDE] [UNBRICK][ROOT] FLASH Any LG L9 Factory ROM (kdz) WITH OFFLINE FIX works and to my surprise bootloader is locked and factory reset.
Yes, flashing the xloader and uboot seems to relock the device, you will need to re-unlock it ( Sorry). Although you did say you got the phone to start?

【MEIZU CUSTOMER SERVICE FLASH TOOLS】 save your bootloop, bricked pro5!

hi guys.i have have the customer servise flash tool for m86(pro5).just for m86,not work on any other phones.
and i want to share it yo you.
now just forget the customer servise.
it can falsh roms even if you lost your recovery and fastboot when your bl is locked.just like the Downloading Mode in samsung.
tools download here (Credits go to @Naphtha)
TestPCTool 1.0.0.9.rar
MultiUpgrade 4.8.5.rar
SAMSUNG USB DRIVER
How to Flash the Rom (M86).pdf (if you need some help with this just reply i will answer your question if i have time.) although my english is poor
you may need flyme roms here
[url]http://www.flymeos.com/firmwarelist?modelId=10&type=1[/URL]
enjoy it
nothing has changed
error token signature
i have this programms but they don`t worked... (Token signing fail)
P.S. please help me to flash my phone (i have fastboot mode & root, system running normally)
skype - evgen2910
My PC does not recognize my device when connected via USB , is said to have been a malfunction , I installed the RR rom and can not recognize it.
Please help:crying::crying:
Are there any tools that work for us with locked bootloaders and no recovery?
locked boot and rooted Pro 5
hexxor93 said:
Are there any tools that work for us with locked bootloaders and no recovery?
Click to expand...
Click to collapse
i have same situation
without success always i get error token sign failed WHEN USE MultiUpgrade 4.8.5.
WHO HAVE REAL SOLUTION THIS HAPPEN AFTER UNLOCK PASSWORD WITH MRT Dongle.
The same, i've a Token sign failed.
EDIT : After research, this tool is the bull**** beacause we need to are into Meizu factory. Indeed, to get the right token you need another tool, but only Meizu have it.
Sorry Guys.
EDIT 2 : https://forum.xda-developers.com/meizu-pro-5/how-to/to-unlock-hardbricked-meizu-pro-5-t3566173 Possible Way
Hi Guys, any other solution ? It reports me the same token sigh failed.
- First time when I stucked in Guest Mode (firmware 5.1.6G i thing ) I was able to fix it by this guide from KYOTOX
https://forum.xda-developers.com/meizu-mx/general/guide-meizu-mx5-stuck-guest-mode-fix-t3397191
(after boot to the desktop phone was 5-6 seconds in Admin User than phone switched to the "GUEST MODE", no more recovery mode, locked bootloader, rooted ) it was possible to solve it by that guide
- now I stucked after upgrade to 6.9.7.5 with Android 7 again (propably because I am just beginner without any experiences with flashing etc )
- Problem is before desktop appears, new flyme or Android 7 is showing me stupid commercials on 7 sheets, so during the process of reading sheet , phone switches to the GUEST, so in generally no chance.
Sorry for my english
multimedia box said:
i have same situation
without success always i get error token sign failed WHEN USE MultiUpgrade 4.8.5.
WHO HAVE REAL SOLUTION THIS HAPPEN AFTER UNLOCK PASSWORD WITH MRT Dongle.
Click to expand...
Click to collapse
bl locked rooted and no recovery.i use the flash tool but no luck.tokens failed. i follow this steps.i have the phone in bootloader mode{locked,rooted}
c/adb write
1.fastboot devices
2.fastboot oem unlock
3.close and boot again in bootloader mode.now you have unlocked bootloader
4.download recovery TWRP_3.0_m86 and put it at c/adb and write fastboot flash recovery TWRP_3.0_m86.img
5.close phone and press volume + and close button to reboot recovery.
and thats it. the phone boots twrp recovery!!
mikee72 said:
bl locked rooted and no recovery.i use the flash tool but no luck.tokens failed. i follow this steps.i have the phone in bootloader mode{locked,rooted}
c/adb write
1.fastboot devices
2.fastboot oem unlock
3.close and boot again in bootloader mode.now you have unlocked bootloader
4.download recovery TWRP_3.0_m86 and put it at c/adb and write fastboot flash recovery TWRP_3.0_m86.img
5.close phone and press volume + and close button to reboot recovery.
and thats it. the phone boots twrp recovery!!
Click to expand...
Click to collapse
With what rom previously flashed u've been able to do this ?

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