yashsingh1/xdaforums huggingface dataset:
[LG Optimus L9 P760, P765, P768, P769] mderuelle:
Downgrade from 10g to 10e

I AM NOT RESPONSIBLE IF YOU MESS UP YOUR PHONE IN ANY WAY

To down grade form 10g to 10e you must be rooted and be able to boot into recovery and you need to download this zip file called STOCK_10e_769BK_ODEX fromhttps://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CDUQFjAA&url=http%3A%2F%2Fd-h.st%2Fz4N&ei=mf9UUd7tBKmBiwKEn4C4CQ&usg=AFQjCNFbeelVeV5cNuExACu8XvTFFw24XA&sig2=t17We38GPsOpsf7DxIOfqw&bvm=bv.44442042,d.cGE .

The recovery image i am using is cwm-based Recovery v6.0.1.9 found in this thread http://xdaforums.com/showthread.php?t=2095825

So the first thing that you need to do is put the file that you downloaded on your sd card preferabley on the root of the sdcard and then follow these steps.

1. you must boot your phone into recovery

2.Scroll down to Wipe cache partition

3. Then to Advance and Wipe dalvik cache go back

4. Then scroll to Wipe data/factory reset

5. Then scroll to install zip from sdcard

6. Then choose zip from sdcard

7. Then scroll down to the file you downloaded STOCK_10e_769BK_ODEX.zip it should start unpacking files wait until it shows that files were flashed and it says complete.

8.Then reboot sytem

You should have successfully downgraded your phone from 10g to 10e

When i reboot my phone i have a clean stock Rom with SU on it

I have successfully tested the downgrade from 10g to 10e at least 10 times each time it has worked. The one thing that I haven't done is trying the downgrade without doing a factory data reset. It would be nice to downgrade without losing all your settings and stuff. I dont see why it wouldnt work but i just havent tried it.

If you like please thank me:good:
[LG Optimus L9 P760, P765, P768, P769] mrmathematica:
I see what you are doing here. This is safe, as it is a full 10e CWM recovery shared by someone. What bothers people before Lelus rooting method comes out is that:

a) previous root method doesn't work for 10g;

b) there's no 10e KDZ (so no way to KDZ flash back to 10e);

c) without rooting, no way to CWM recovery to 10e;

d) a way to go back to 10e is want because then people can root 10e back then

See this (now locked) post for details:

http://xdaforums.com/showthread.php?t=2140868

It was a hard time for people here who own P769. But thanks to good people as Lelus and pinoyto doing research, we get many progress now.

a) Lelus' rooting methed works for all L9;

b) we now have a way to fix the mirrored screen as a result of flashing KDZ of other L9 variants

Enough said.
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
I used the CyanogenMod :) LMK if you want the modified defconfig. I tried to enable backlight brightness support and it seems the drivers are a bit modified for a different device. I can definitely use a hand or two to get orientation axis and brightness working.
[LG Optimus L9 P760, P765, P768, P769] Tablechair:
Hey wish I could help but alas I am a newb you have my moral support though.
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
:) Update, camera orientation fixed :) Any idea what libs is controlling the Tilting sensor? Thanks.
[LG Optimus L9 P760, P765, P768, P769] Lelus:
sensors.omap4.so ??

I don't think there is a tilting sensor. Combination of accelerometer and the magnometer takes care of that but I might be wrong

BMA250 accelerometer

BMM050 magnetic sensor
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
Forgot to link the camera fix :

https://www.dropbox.com/s/4d35c5rri38hb4g/cm-10.1-20130331-UNOFFICIAL-p760.zip

BTW, this fix breaks the sensors.... not really sure why but anyone who is good with libs might want to mix and match libs with the other release to get it to work and edit it for proper orientation...
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
Update:

BRIGHTNESS IS FIXED !!!! Finally!

Here is the link

https://www.dropbox.com/s/d04pxjm463em5fp/cm-10.1-20130401-UNOFFICIAL-p760.zip

Reverted back to enable sensors (X axis is the only issue) and camera is upside down again

It seems like the sensors still think we have an inverted screen so I believe inverting the x axis will fix all our issues. Any ideas on how to invert the X axis via kernel or Eom?
[LG Optimus L9 P760, P765, P768, P769] mrmathematica:
Since you get this far, why not start a post in the development section? More people might notice this and help.
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
Will do.. My first development section :)

BTW,

CAMERA ORIENTATION FIXED TOO :) Only axis is the issue...big thanks to mikegrapinsky :)

Here is the link

https://www.dropbox.com/s/d04pxjm463em5fp/cm-10.1-20130401-UNOFFICIAL-p760.zip
[LG Optimus L9 P760, P765, P768, P769] Lelus:
I analyzed uboot and xloader from v20 and it looks like uboot unlocks bl .I think there might be slightly shorter way to unlock bootloader by flashing v20 xloader and uboot on rooted v10g, waiting 30 minutes then adb reboot oem-unlock .I can't test it myself because my bl is already unlocked.
[LG Optimus L9 P760, P765, P768, P769] pinoyto:
That is very interesting, save the process of mirrored screen and stuff... We need someone with a locked bootloader to try this out.
[LG Optimus L9 P760, P765, P768, P769] luisro:
Hello Pinoyto, first of all thank you for all the work you, Lelus and everyone else have done on this device. I currently have a roooted P769 on 10G and I am could try out Lelus new method of unlocking the bootloader. If I can get the files necessary and a bit more detailed insctruction I could try it and report the results.
[LG Optimus L9 P760, P765, P768, P769] rkaede:
flashing from cwm ? i can try. but i never do adb to my phone. :). do i need to download something ?

btw anyone have idea difference between P769 and P769 BK. coz i found this link

https://wws.lg.com/global/support/opensource/opensourceList?types=ALL&search=LGP769

hopefully it will be helpfull.
[LG Optimus L9 P760, P765, P768, P769] mike6696:
It says that the p769 has JB? Well p769BK I thought they were the same thing.
[LG Optimus L9 P760, P765, P768, P769] rbraswell8:
p769bk is t-mobile variant, the other is wind mobile for canada. wonder when t-mobile will actually leak or release 20d
[LG Optimus L9 P760, P765, P768, P769] mike6696:
What to do to over clock my GPU like do I put the file somewhere
[LG Optimus L9 P760, P765, P768, P769] syckman:
as another poster mentioned in another thread, on LG's open source distribution page, the following v20d zip file can be downloaded:

LGP769BK(Optimus L9)_Android_JB_P769v20d

Sorry I'm a newb so cannot link URL.

I don't know what exactly is this file - does this mean we 769BK owners can now update to JB without waiting for Tmobile?
[LG Optimus L9 P760, P765, P768, P769] melcali:
talking about this? https://wws.lg.com/global/support/opensource/opensourceList?types=ALL&search=LGP769
[LG Optimus L9 P760, P765, P768, P769] syckman:
Yes, that is the file. Can we use it to install JB? Or is it used for devs to create JB roms?
[LG Optimus L9 P760, P765, P768, P769] Juanito216:
Do I have to use omap4boot in order to use fastboot on my L9? I didn't try it yet, i'm wondering if that's mandatory, i'm waiting for the time to try to adb reboot my phone.
[LG Optimus L9 P760, P765, P768, P769] jackofalltrades:
so does downgrading to 10e from 10g really unlock the bootloader?
[LG Optimus L9 P760, P765, P768, P769] Tablechair:
Nope.
[LG Optimus L9 P760, P765, P768, P769] wwazman:
I just bought this phone a week and a half ago.. my 15 day warranty is up tomorrow, I Security Errored it once, I don't look forward to that process again.. I had a Vibrant that was soooo much easier lol! .. any ida when LG will release JB?

Quote:

Originally Posted by Lelus View Post

I analyzed uboot and xloader from v20 and it looks like uboot unlocks bl .I think there might be slightly shorter way to unlock bootloader by flashing v20 xloader and uboot on rooted v10g, waiting 30 minutes then adb reboot oem-unlock .I can't test it myself because my bl is already unlocked.

That is very interesting, save the process of mirrored screen and stuff... We need someone with a locked bootloader to try this out.

Mine is still locked but rooted, and I have the v10gkdz fil in case it mucks up. I'd be willing to try it out if you can get the files and all in one readme together?
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
Need help. I followed and installed 10G to 100% but then restart is hanging at "Android 4g T-Mobile" screen. Adb is fully functional but wipe etc is missing root permission i guess.

Please help how to apply any working ROM to use the phone.

20:30:48 : [C:\LGMobileUpgrade] Try to delete folder

20:30:48 : RemoveDirectory1 Error(2):C:\LGMobileUpgrade

20:30:48 : Start Date : 2013-04-16 20:30:48

20:30:48 : ---------- QM Testmode ---------

20:30:48 : ***** Check Tool Version *****

20:30:48 : Tool version : 1.5.4.8

20:30:48 : UpgradeDLL version : 1.2.6.7

20:30:48 : Current Dir : C:\ProgramData\LGMOBILEAX\B2C_Client

20:30:48 : LGE USB Driver Version :

20:30:48 : Android PDLV Version :

20:30:48 : Android NDLV Version :

20:30:48 : ******************************************

20:30:48 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

20:30:48 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone

20:30:48 : SetEmerModeAT()

20:30:48 : _IsConnectedPhone Call

20:30:56 : _IsConnectedPhone(1)

20:30:56 : 0 - NotConnected.

20:30:56 : 1 - Normal connect success

20:30:56 : 2 - Emergency connect success

20:30:56 : *****CheckOS Start********

20:30:56 : Microsoft_Windows7_Professional_Service Pack 1

20:30:56 : *****CheckPCSyncPrograms Start*****

20:30:56 : PCSyncPrograms Not Found - OK and ready to upgrade

20:30:56 : Checking the connection with the cell phone...

20:30:56 : dwWaitResetTime(40000 ms)

20:30:57 : Phone Mode(1)

20:30:57 : *****GetPhoneType Start*****

20:30:57 : Phone Type : OMAP_IFX

20:30:57 : *****GetPhoneModel Start*****

20:30:58 : Phone read Model : LG-P769

20:30:58 : Server param Model :

20:30:58 : *****GetPhoneBinaryVersion Start*****

20:30:59 : Phone Bin Version : V00A_0\r\nOK\r\n

20:30:59 : *****Get ESN / IMEI / MEID Start*****

20:31:02 : ESN/IMEI/MEID : <my valid one>

20:31:02 : Phone type Compare start

20:31:02 : *****Start _GetBatteryLevel*****

20:31:03 : Battery(4)

20:31:05 : *****CheckPCSyncPrograms Start*****

20:31:06 : PCSyncPrograms Not Found - OK and ready to upgrade

20:31:07 : ****************CheckAndDownload********************

20:31:07 : ******Extract Start C:\Users\kkethine\Downloads\V10G_00.kdz*****

20:31:07 : Model Dll Dir(C:\ProgramData\LGMOBILEAX\Phone\)

20:31:07 : File Size = 506628863

20:31:07 : Extract kdz file Error.

20:31:07 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

20:31:07 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone

20:31:07 : !pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR

20:31:07 : CLGMobileHttp Class ¼Ò¸ê½ÃÀÛ.

20:31:07 : CLGMobileHttp Class ¼Ò¸ê...

20:31:07 : Page_Error ºÎºÐÀÔ´Ï´Ù

20:31:07 : OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate
[LG Optimus L9 P760, P765, P768, P769] donk165:
It sounds like there is an issue with the KDZ file, have you tried downloading the file again? It may be corrupt

Sent from my LG-P768
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
Thanks for reply. I tried another file with same failure result.
[LG Optimus L9 P760, P765, P768, P769] Lelus:
have you tried removing C:\ProgramData\LGMOBILEAX\Phone ?
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
Lelus, Thanks for Rooting option you found for L9. That folder is created only while extracting KDZ and deleted by LG tool automatically. It is not there now. MTP Driver install failed though whenever i am connecting phone after regular start instead of in s/w update mode.

tried LG tool in Recovery mode:

07:07:33 : Check Backup and Restore model

07:07:33 : Skip Backup and Restore - Emergency mode

07:07:33 : Phone type Compare start

07:07:33 : *****Start _GetBatteryLevel*****

07:07:34 : Battery(4)

07:07:37 : *****CheckPCSyncPrograms Start*****

07:07:37 : PCSyncPrograms Not Found - OK and ready to upgrade

07:07:38 : ****************CheckAndDownload********************

07:07:38 : *****OpenURL Start*****

07:07:38 : strURL.IsEmpty()

07:07:38 : [C:\ProgramData\LGMOBILEAX\Phone] Try to delete folder

07:07:38 : RemoveDirectory1 Error(2):C:\ProgramData\LGMOBILEAX\Phone

07:07:38 : *****OpenURL Start*****

07:07:38 : strURL.IsEmpty()

07:07:38 : *****OpenURL Start*****

07:07:38 : strURL.IsEmpty()

07:07:38 : !pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR

07:07:38 : CLGMobileHttp Class ¼Ò¸ê½ÃÀÛ.

07:07:38 : CLGMobileHttp Class ¼Ò¸ê...

07:07:38 : Page_Error ºÎºÐÀÔ´Ï´Ù

07:07:38 : OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate

07:07:47 : =======Cancel button click : m_nStep(5)
[LG Optimus L9 P760, P765, P768, P769] Lelus:
I'm a bit lost. Does your phone boot normally? Which rom were you on and which one are you trying to flash ?
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
i was on T-mobile with v10g. the way you mentioned how to root. then i applied v20b as per first post then, oem unlock did nothing except simple reboot. applied v10g to 100% success. after that my problems started like boots to android 4g T-mobile screen and may be feeling some issue with some driver.
[LG Optimus L9 P760, P765, P768, P769] Lelus:
you have to do hard reset after going back to 10g

vol- + home + power
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
now i have the phone which is not taking updates in s/w upgrade mode as mentioned by OP after v20b update. When start normal, it gets stuck at "Android 4g t-mobile" screen and does not take any kdz update with above errors. still searching for solution to update any kdz.
[LG Optimus L9 P760, P765, P768, P769] Lelus:
http://xdaforums.com/showpost.php?p=40121966&postcount=7

1 step also fixes s/w up mode
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
Thanks again Lelus, that helped to stop mirror effect and fastboot worked. Still have same errors though. is there a way to install cwm, download cwm backup and install that?

22:52:31 : !pUpgrade->StartProcessing ... PostMsg STEP_TYPE_ENV_ERROR

22:52:31 : CLGMobileHttp Class ¼Ò¸ê½ÃÀÛ.

22:52:31 : CLGMobileHttp Class ¼Ò¸ê...

22:52:31 : Page_Error ºÎºÐÀÔ´Ï´Ù

22:52:31 : OnStepMsg STEP_TYPE_ENV_ERROR delete m_pLGCyonUpdate
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
I went to fastboot and wiped system recovery. Now i am in bootloop to LG logo. Still able to go into S/w update mode and fastboot but not into normal phone shell anymore.

Can i use any cwm backups in fastboot to reimage the partitions?
[LG Optimus L9 P760, P765, P768, P769] Lelus:
nope, cwm backup won't work, try http://xdaforums.com/showpost.php?p=39879519&postcount=10 from s/w update mode or perhaps try flashing from another pc
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
No KDZ tool is working. I think the problem is in recovery, boot partitions. I smartflashed v10g as bin which did not help. need v10g boot and recovery to try for p769bk
[LG Optimus L9 P760, P765, P768, P769] Lelus:
I'm pretty sure it's driver related problem.

Stock recovery is useless in this situation.
[LG Optimus L9 P760, P765, P768, P769] nuzbabu:
Thanks.

That made me to attempt another approach where we have to just disable all LG Modems (I had 2) in device manager. Then completed this exercise to get to locked BL with v10G. I got Galaxy s3 to keep going last week and i may stick to that from now.

Thanks
[LG Optimus L9 P760, P765, P768, P769] aequitas3:
In regards to the OP...followed the steps to the "adb reboot oem-unlock" process exactly as written...yet did not get a reboot into fastboot after hitting enter, just a simple reboot. Any suggestions on what I should do, or is this whole unlocking the bootloader a 1-shot only type of scenario?:confused:
[LG Optimus L9 P760, P765, P768, P769] Lelus:
no worries , just have your phone on for about an hour or so before you try "adb reboot oem-unlock" again
[LG Optimus L9 P760, P765, P768, P769] aequitas3:
Thanks. Last time I successfully did a "oem-unlock" procedure, I owned the Nexus S, which was pretty straight to the point. This phone definitely is a pain. Also, has anyone successfully done this method, got it back to v10g and received an OTA update to T-Mobile's v20d while keeping bootloader unlocked? Just curious, since I decided to do this to my "beater" phone since "adb reboot oem-unlock" did not work on the v20d update after an hour and a half of the phone running...
[LG Optimus L9 P760, P765, P768, P769] nickleo642000:
relocked my boot loader

funny after 12 hours of fixing my phone after bricking and formating internal memory and 12 more hours of working on my phone i managed to unlock the bootloader and reload all my software, then i tried playing around in fast boot some more and formated internal memory AGAIN so both times i had to reload u-boot.img and x-loader.img to my phone but after reloading it the second time i found my bootloader is relocked and security error comes up again after installing cwm and puting custom rom on so from this i do believe if someone extracts the unlocked u-boot.img and x-loader.img from a unlocked phone we could push the files to the phone and create a faster way or atleast alternative way of unlocking the boot loader . i dont know how to extract it to try it myself again but if some explains it i will try it this week or maybe someone who is already unlocked can post theres i will try is (this would be so much easier too)
[LG Optimus L9 P760, P765, P768, P769] qingz:
Same here.

I unlocked the bootloader after hours of struggling. And fixed the touch screen, but I still have mirrored image during boot. So I flashflashed u-boot and x-loader, and now my mirrored image is fixed, but my bootloader is locked again.

Is there a way to fix the mirrored image during the boot? I know after boot up to the system, the mirrored image is fixed by press power button, but I can not fix it in CWM.
[LG Optimus L9 P760, P765, P768, P769] gotmilk702:
Any tips or tricks on the "adb reboot oem-unlock" step? I've waited 30 minutes, 1 hour, 2 hours, and overnight and I still don't get to the OEM unlocker, just a simple reboot. I've tried waiting unplugged and tried waiting plugged in. Ack!
[LG Optimus L9 P760, P765, P768, P769] qingz:
I have two P769 phones from T-Mobile. One of them I bought from Bestbuy which came with v10e. I managed to unlock the bootloader with the method described here. Another one bought from T-Mobile which came with v10g. I couldn't make it work, no matter how long I wait. It just simply reboot when I issue the unlock command.

The one I unlocked the bootloader, always has mirrored image during boot and also mirrored image in CWM. I don't know how to fix it.
[LG Optimus L9 P760, P765, P768, P769] Testman08:
Has anyone tried this method to unlock bootloader. http://theandroidrom.com/how-to-unlock-bootloader-for-lg-optimus-l9-on-official-jelly-bean-firmware/ ?
[LG Optimus L9 P760, P765, P768, P769] Tablechair:
That doesn't work all it does is send the oem unlock command in adb, which is not supported. It just restarts.
[LG Optimus L9 P760, P765, P768, P769] gotmilk702:
So ive flashed back and forth from the 760 jb rom and the 769 10g rom and still cant get the phone to reboot into the oem unlocker after waiting the requisite (and more) time to issue the adb command.

No other tips from the guys who have done this on what i could be missing or doing wrong here?
[LG Optimus L9 P760, P765, P768, P769] Tablechair:
You were trying while you're on the p760 rom correct? I think it might be closer to an hour you have to wait.
[LG Optimus L9 P760, P765, P768, P769] gotmilk702:
Yeah i was trying on the 760. :-/ ive tried overnight unplugged. Does it need to get plugged in with the ADB ready and wait a long period of time then too?
[LG Optimus L9 P760, P765, P768, P769] altvolt74:
im confused

i leave the phone on adb right and pc adb devices while is plug of curse but what selection i chose on phone like lg software or charge only pls help im trying to help friend out
[LG Optimus L9 P760, P765, P768, P769] mderuelle:
Did you install omap fastboot drivers before tried unlocking and are you on unscripted 20b europe
[LG Optimus L9 P760, P765, P768, P769] clockcycle:
After a few hours of trying, I just wanted to get back to stock. Couldn't trigger the OEM unlock. Went back to 10g, tried to reroot but for some reason suprersu was still missing.

I was hoping to unlock boot loader, get back to rooted 10g, install cwm and recover 20d.

That wonky touchscreen is a time killer...

Is there any simple way just to get back to completely stock with working tough screen?
[LG Optimus L9 P760, P765, P768, P769] gotmilk702:
I installed the universal drivers. Is there an additional driver to install?
[LG Optimus L9 P760, P765, P768, P769] gotmilk702:
Per all the warnings, none of this is simple ... lol. But I have been through the gauntlet, and got my phone all the way back (I think) to stock, in a various number of combos. At this point, the mirrored touchscreen is a piece of cake for me, I just never got my bootloader unlocked sadly. I can help you get back to stock if you are stuck; but the basic idea is just skip to the next step and forget about unlocking your bootloader. Flash 10g, reflash 10g swapping the bin for root access per Lelus, flash the file following the instructions in post 24 OR here since you don't need to preserve an unlocked bootloader -- this will fix the mirrored image on boot too.
[LG Optimus L9 P760, P765, P768, P769] mderuelle:
Thanks buy I finally got it figured out it only took 2 days to do it but its done and I'm loving the ROM there are a fee issues I have ran into so far but its running great. The one major problem I'm having is the when I'm on a call the speaker sounds blown that's a major problem for me
[LG Optimus L9 P760, P765, P768, P769] clockcycle:
Thanks, I gave up for the day. After work, I came back to the project. I went through these steps.

Flashed v20b kdz, waited 30 mins and tried to unlock bootloader, it just reset. So then I waited 1 hour, unlocked bootloader. Flashed cwm touch.

Flashed 10g kdz, did the hex edited bin swap ( is there a reason people do this step twice, one without swaping first then swap? ) rooted using lelus bl locked method.

Did the digitizer fix.

Restored my JB v20d cwm backup.

Everything's fine, but I went further, doing the mirror fix with ufix. (Wasn't aware it was stock P769 JB, so I got a security error)

I followed Lelus help and reflash P765 uboot and xloader and it all came back fine.

So my end result is Unlocked Bootloader, rooted, CWM Touch recovery, (20d) Jelly Bean updated p769.
[LG Optimus L9 P760, P765, P768, P769] qingz:
Are you sure your bootloader is still unlocked after you flashed uboot and xloader?
[LG Optimus L9 P760, P765, P768, P769] clockcycle:
Well according to what Lelus suggested I try, it would seem like it's still unlocked.

I flashed the stock P769 uboot/xloader and got that security error.

He suggested I either flash the stock recovery back, since stock didn't work with an unlocked bootloader. Or to reflash uboot/xloader from an unlocked/unlockable rom/device. And suggested I use the ones posted by cmahendra. I flashed those and phone boots, cwm recovery runs, which didn't when my bootloader was locked.

So I am assuming it still has to be unlocked to allow/load CWM recovery instead of having to use/load stock. Don't know how to check it other than loaded fastboot and seeing the message on top..
[LG Optimus L9 P760, P765, P768, P769] qingz:
I believe your bootloader is locked. That's why you got security error.

Any rom made for P769 should work with unlocked booloader on P769 including stock rom.

My bootloader is unlocked, and I am using CWM backup of the v20D, since CM10.1 does not display Chinese file name and other issues.

I think there are at least two ways to check if the bootloader is unlocked.

1. Boot the phone into SW Upgrade Mode, there is a message on top right says unlocked bootloader.

2. Issue command "adb reboot oem-unlock" from adb shell as supersuer, if it is unlocked, it will boot into fastboot, otherwise, it will just reboot to system.