Need Help for unlock bootloader p769 - LG Optimus L9 P760, P765, P768, P769

I did spent more than 48hr for unlock bootloader
what i did
(my device 769 TMO on 20F)
HardReset > flash kdz 20B > replace 11bin > root with lelus9 JB > install recovery apk > install radio zip > wait for 1hr > adb reboot oem-unlock > Nothing happens
i did try http://forum.xda-developers.com/showthread.php?t=2198114 and http://forum.xda-developers.com/showthread.php?t=2277639
with exacty step by step and nothing still happens after oem-unlock
sorry for bad english

This happened to me as well. Good luck with search.
Sent from my LG-P769 using xda premium

Related

Just S-Offed, phone wont boot or go into bootloader

Just like title says. I cant access the bootloader or anything else besides fastboot. I just s-offed with the wire trick and it says "locked" at the top. Please help thanks
gearlo said:
Just like title says. I cant access the bootloader or anything else besides fastboot. I just s-offed with the wire trick and it says "locked" at the top. Please help thanks
Click to expand...
Click to collapse
You're at the bootloader right now. Use fastboot to flash the recovery and boot.img you were using before the s-off (controlbear makes a backup of it automatically so look in the folder it's in)
gearlo said:
Just like title says. I cant access the bootloader or anything else besides fastboot. I just s-offed with the wire trick and it says "locked" at the top. Please help thanks
Click to expand...
Click to collapse
I had the same issue. Fixed it using the steps from this page. Step 1 is all I had to do...
http://unlimited.io/juopunutbear-public-beta-0-1/troubleshooting/
ROM/Data Recovery
There are three ways to recover your ROM. Try each until one succeeds.
1. ControlBear -r (This is run with the phone at the JuopunutBear/Arrow screen). If this succeeds recovery is complete otherwise continue to step 2.
2. ControlBear -f (This is run with the phone at the fastboot screen). If this succeeds skip to step 4 otherwise continue to step 3.
3. fastboot flash boot boot_backup.img
4. fastboot flash recovery recovery_backup.img
This is done with the phone in fastboot mode, continue to step 4.
5. Boot the phone to android and install busybox from the market if not already installed.
6. adb push sdcard.img /data/local/tmp/
7. adb shell
8. $ su
9. # busybox dd if=/data/local/tmp/sdcard.img of=/dev/block/mmcblk1 conv=notrunc
10. Reboot the phone.

Cyanogenmod 9.1 installing problems

Heres the deal.
I got my hands on the walkman and whole android thing is pretty new to me,but i heard a lot of good responses about cyanogen and was wanting to instal it,but i faced some issues:
What I did: I unlocked the bootloader by following thread from sony site,loader was set to allow unlock,so this went succesfully i think.
Next a root was needed,tried several methods and nothing,then helped the one at talk.sonymobile
Hooray,SU app is in,allowed tiatnium and CWM installed sucessfully,phone is rooted.
Now I followed the tutorial from Cyanogen site.
Placed the rom and gapps in sd card,extracted the .img file to fastboot folder,everything is set,now I open the CMD promt in the fastboot folder,fastboot found the device,I hit the : ''fastboot -i 0xfce flash boot boot.img'' tried also '' fastboot flash boot boot.img'' but the cmd throws FAILED(the device must be rooted first).
What went wrong?the device is rooted already...I'm confused.Any suggestions?
and I wondered,is that cmd boot flash necessary,maybe i can install the cyanogen.zip and gapps.zip from cwm recovery console where it is said install from zip,cause the zip contains the boot.img and i was thinking,maybe it is possible to do it without the cmd thing.
gvidizz said:
Heres the deal.
I got my hands on the walkman and whole android thing is pretty new to me,but i heard a lot of good responses about cyanogen and was wanting to instal it,but i faced some issues:
What I did: I unlocked the bootloader by following thread from sony site,loader was set to allow unlock,so this went succesfully i think.
Next a root was needed,tried several methods and nothing,then helped the one at talk.sonymobile
Hooray,SU app is in,allowed tiatnium and CWM installed sucessfully,phone is rooted.
Now I followed the tutorial from Cyanogen site.
Placed the rom and gapps in sd card,extracted the .img file to fastboot folder,everything is set,now I open the CMD promt in the fastboot folder,fastboot found the device,I hit the : ''fastboot -i 0xfce flash boot boot.img'' tried also '' fastboot flash boot boot.img'' but the cmd throws FAILED(the device must be rooted first).
What went wrong?the device is rooted already...I'm confused.Any suggestions?
and I wondered,is that cmd boot flash necessary,maybe i can install the cyanogen.zip and gapps.zip from cwm recovery console where it is said install from zip,cause the zip contains the boot.img and i was thinking,maybe it is possible to do it without the cmd thing.
Click to expand...
Click to collapse
Well,for first:install the Flashtool and drivers.it is easier to use,and it will flash the boot.img either phone rooted or not.unbelivable that you people use CMDs,just like prehistorical humans
Sent from my ST15i using xda premium
gvidizz said:
and I wondered,is that cmd boot flash necessary,maybe i can install the cyanogen.zip and gapps.zip from cwm recovery console where it is said install from zip,cause the zip contains the boot.img and i was thinking,maybe it is possible to do it without the cmd thing.
Click to expand...
Click to collapse
Install the drivers from flashtool and try it with flashtool
No, on our xperia devices we have to flash the kernel first, we can't flash it via cwm
shadik555 said:
Well,for first:install the Flashtool and drivers.it is easier to use,and it will flash the boot.img either phone rooted or not.unbelivable that you people use CMDs,just like prehistorical humans
Sent from my ST15i using xda premium
Click to expand...
Click to collapse
Without CMD Flash Tool would not have been able to even flash a custom kernel as fastboot.exe requires CMD. As for your problem, dial this in your phone pad - *#*#7378423#*#*
If you have successfully unlocked your bootloader, then 'Rooting Status" will show "Bootloader unlocked: Yes" else you have not done the process properly. Make sure that you have typed the unlocked code properly. The 'o' may look like in the unlock code '0'. It is safer to copy and paste the unlock code. Also, try running CMD as administrator.
check again if u already unlocked bootloader, if bootloader unlocked:yes, u have unlocked bootloader, if bootloader unlock allowed:yes, means that ur phone can unlocked bootloader n need to unlocked
Thx
abcdjdj said:
Without CMD Flash Tool would not have been able to even flash a custom kernel as fastboot.exe requires CMD. As for your problem, dial this in your phone pad - *#*#7378423#*#*
If you have successfully unlocked your bootloader, then 'Rooting Status" will show "Bootloader unlocked: Yes" else you have not done the process properly. Make sure that you have typed the unlocked code properly. The 'o' may look like in the unlock code '0'. It is safer to copy and paste the unlock code. Also, try running CMD as administrator.
Click to expand...
Click to collapse
thank you,the first attempt for unlocking bootloader was un sucessfull.Running CMD as administrator and typing unlock code in CAPS did it.
Now im on Cyan 9.1
thx all
So,its not possible to flash a kernel using cwm? I ve been told that in cyanogenmod you already have rom and kernel in one zip and there is no need for use of flashtool...i guess i was told wrong?
Sent from my ST15i using Tapatalk 2
I think it can be done on newer phones, but on 2011 models, it can't be done, u have to flash kernel using fast boot in pc. But u do Ave the kernel in the same zip
Sent from my Xperia Mini Pro
mnishamk said:
I think it can be done on newer phones, but on 2011 models, it can't be done, u have to flash kernel using fast boot in pc. But u do Ave the kernel in the same zip
Sent from my Xperia Mini Pro
Click to expand...
Click to collapse
Thx,my friend who used that method on lg p350 told me it could be done and i thought cos my xperia is a lot newer than his device.
Sent from my ST15i using Tapatalk 2

[HELP] Need Help for unlock bootloader p769

I did spent more than 48hr for unlock bootloader
what i did
(my device 769 TMO on 20F)
HardReset > flash kdz 20B > replace 11bin > root with lelus9 JB > install recovery apk > install radio zip > wait for 1hr > adb reboot oem-unlock > Nothing happens
i did try http://forum.xda-developers.com/showthread.php?t=2198114 and http://forum.xda-developers.com/showthread.php?t=2277639
with exacty step by step and nothing still happens after oem-unlock
sorry for bad english
update. now im back on stock 20F but when i boot my p769 the lg logo is mirrored how to fix that. I already used (cat /sdcard/external_sd/v6.bin > /sys/devices/virtual/input/lge_touch/firmware
reboot) its fixed my screen and touch but it didnt fix lg boot logo.
The mirrored image I only got rid of by using fastboot and flashing the stock jellybean boot. Img. It did not go away after a kdz flash back to 20f and even after flashing the proper boot image I had to flash the cwm ts fix.
Sent from my LG-P769 using xda app-developers app

Hard brick! Help me?!

Hi! Please help me!
By mistake flash geeb_KK_4-4_bootloader_only.zip in my device F180l. And now only run fastboot. Then go to [GUIDE] Flashing a Factory image with fastboot / return to stock, http://forum.xda-developers.com/showthread.php?t=1907796
Follow the commands with bootloader of F180l :
> fastboot erase boot
> fastboot flash bootloader bootloader.aboot.img
> fastboot flash bootloader bootloader.sbl2.img
> fastboot flash bootloader bootloader.sbl3.img
> fastboot reboot-bootloader
Is correct? The folders? Is Ok?!
Thank you very much!!
Sorry my bad english

[Q] P760 - unlocking bootloader

Hello,
I tried to unlock bootloader of LG L9 P760 using this guide:
http://forum.xda-developers.com/showthread.php?t=2221102
but I didn't succeed.
I tried this method while having V20i rom, then I flashed V20B EUROPE OPEN and tried once again, still without the results.
I even managed to root the phone using this method:
http://forum.xda-developers.com/showthread.php?t=2439667
but entering "reboot oem-unlock" command in terminal emulator didn't make any results either.
The phone just normally rebooted every time.
Is there anything else I can try to unlock bootloader? I'd really like to install Cyanogenmod on this phone.

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