Is it possible to downgrade back to ICS? - LG Optimus L9 P760, P765, P768, P769

I'm just getting tired of this battery drain on jelly bean :banghead: it runs good but idk if its worth it.
But I'm worried since I rooted the phone and the boatloader is still locked so is it still possible? Is there a cwm backup I can restore?
Thanks in advance
sent from my locked rooted P769 v20D
I'm on YouTube (BioDesigner48)

http://forum.xda-developers.com/showthread.php?t=2136204
Good luck
Sent from my LG-P769(20d) using the xda-developers app. If I helped you please hit the "thank you" button.

Thanks :thumbup:
sent from my locked rooted P769 v20D
I'm on YouTube (BioDesigner48)

Related

[Q] Need some help to root LG Optimus L9

Hello everybody! A few days ago i've tried to root my LG Optimus L9 Fw. 4.0.4 V10F but, no way..i've tried manual root, scripts and some apps. Root doesn't work! Can Anyone help me? :fingers-crossed:
masottino93 said:
Hello everybody! A few days ago i've tried to root my LG Optimus L9 Fw. 4.0.4 V10F but, no way..i've tried manual root, scripts and some apps. Root doesn't work! Can Anyone help me? :fingers-crossed:
Click to expand...
Click to collapse
visit this thread and related threads on 1st post.
cmahendra said:
visit this thread and related threads on 1st post.
Click to expand...
Click to collapse
I have another question :fingers-crossed: are V10G and V10H rootable?
masottino93 said:
I have another question :fingers-crossed: are V10G and V10H rootable?
Click to expand...
Click to collapse
not directly. Root V10A, install CWM and then flash any Rooted V10G or V10H cwm backup.
Check this post might be helpful
So i have the 76910e is it possible to root thos device or what ove tried binaryropt nothing please help
Sent from my LG-P769 using xda app-developers app
mderuelle said:
So i have the 76910e is it possible to root thos device or what ove tried binaryropt nothing please help
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
Use the forum search and you will find the answer. The answer is yes. It will probably take a few tries and it will succeed. Good luck.
mderuelle said:
So i have the 76910e is it possible to root thos device or what ove tried binaryropt nothing please help
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
Dude, you are repeating the same questions which are answered already. If you have read the suggested threads carefully, then you could have saved some valuable time of others.
R: [Q] Need some help to root LG Optimus L9
What if I say that my android doesn't support Rom manager?
Sent from my LG-P760 using xda app-developers app
I just got my Optimus L9 today, T-Mobile, P76910g. I read that it was not rootable at the moment, right?
JustinRawr said:
I just got my Optimus L9 today, T-Mobile, P76910g. I read that it was not rootable at the moment, right?
Click to expand...
Click to collapse
I also got mine today. apparently, we have to downgrade to an earlier version, then root that one.
R: [Q] Need some help to root LG Optimus L9
redheadplantguy said:
I also got mine today. apparently, we have to downgrade to an earlier version, then root that one.
Click to expand...
Click to collapse
Buti...How can i root my phone without downgrading?
Sent from my LG-P760 using xda app-developers app
redheadplantguy said:
I also got mine today. apparently, we have to downgrade to an earlier version, then root that one.
Click to expand...
Click to collapse
Oh that sucks. I only downgraded one phone long ago, a long process as I remember it being.
R: [Q] Need some help to root LG Optimus L9
redheadplantguy said:
I also got mine today. apparently, we have to downgrade to an earlier version, then root that one.
Click to expand...
Click to collapse
masottino93 said:
Buti...How can i root my phone without downgrading?
Sorry I understood latest instead of earlier!
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
Sent from my LG-P760 using xda app-developers app
JustinRawr said:
I just got my Optimus L9 today, T-Mobile, P76910g. I read that it was not rootable at the moment, right?
Click to expand...
Click to collapse
Yes P769 V10G is not Rootable! (Telling at least 100+th times, coz new pals dont read)
Anyways you are added to this Club.
redheadplantguy said:
I also got mine today. apparently, we have to downgrade to an earlier version, then root that one.
Click to expand...
Click to collapse
If you are on V10G, you cannot downgrade. (Telling this also 100+th times, coz new pals dont read)
There is a Club of unfortunate people who are stuck on V10G
masottino93 said:
Buti...How can i root my phone without downgrading?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
You said you are on P769-V10E, then you can root, but never upgrade to V10G and many people are stuck on V10G as they cannot root it and cannot downgrade too.
There is a Club of unfortunate people who are stuck on V10G
R: [Q] Need some help to root LG Optimus L9
cmahendra said:
Yes P769 V10G is not Rootable! (Telling at least 100+th times, coz new pals dont read)
Anyways you are added to this Club.
If you are on V10G, you cannot downgrade. (Telling this also 100+th times, coz new pals dont read)
There is a Club of unfortunate people who are stuck on V10G
You said you are on P769-V10E, then you can root, but never upgrade to V10G and many people are stuck on V10G as they cannot root it and cannot downgrade too.
There is a Club of unfortunate people who are stuck on V10G
Click to expand...
Click to collapse
I'm sorry but I said that I'm on P760-V10F, it's written in the first post
Sent from my LG-P760 using xda app-developers app
Oh well I still like the phone as is. I'm just used to rooting all my droid's and flashing rom's like crazy
masottino93 said:
I'm sorry but I said that I'm on P760-V10F, it's written in the first post
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
I responded to your post #5. Not seen op.
R: [Q] Need some help to root LG Optimus L9
cmahendra said:
I responded to your post #5. Not seen op.
Click to expand...
Click to collapse
I'm sorry but i'm kinda confused, where did I write that i'm on P760 - V10E? whatever, can I directly upgrade from v10f to v10h without problems?
Sent from my LG-P760 using xda app-developers app
masottino93 said:
What if I say that my android doesn't support Rom manager?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
U must be rooted for ROM MANAGER to work
---------- Post added at 05:21 PM ---------- Previous post was at 05:13 PM ----------
masottino93 said:
I'm sorry but i'm kinda confused, where did I write that i'm on P760 - V10E? whatever, can I directly upgrade from v10f to v10h without problems?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
U can upgrade to v10h after rooting without any problems. Thanks to cmahendra :laugh:
Go to rooted cwm backups here http://forum.xda-developers.com/showthread.php?t=2136204, download whichever version u want, flash it.
Remember firsrt u must b rooted, then install recovery by artas, flash cwm backup which u downloaded from above link
How to root?
Am not sure whether 10f s rooable or not, check rooting thread. Well its better if u downgrade ur device to v10A then root, then flash cwm backup to any higher version u want
Gh0sT.RPG said:
U must be rooted for ROM MANAGER to work
---------- Post added at 05:21 PM ---------- Previous post was at 05:13 PM ----------
U can upgrade to v10h after rooting without any problems. Thanks to cmahendra :laugh:
Go to rooted cwm backups here http://forum.xda-developers.com/showthread.php?t=2136204, download whichever version u want, flash it.
Remember firsrt u must b rooted, then install recovery by artas, flash cwm backup which u downloaded from above link
How to root?
Am not sure whether 10f s rooable or not, check rooting thread. Well its better if u downgrade ur device to v10A then root, then flash cwm backup to any higher version u want
Click to expand...
Click to collapse
If i downgrade to v10a i'll lose all my data, right? So, if i decide to do this downgrade, i have to do a backup, i think.
So, in synthesis: Downgrading, rooting and then flashing?

[Q] T-Moble LG Optimus L9 P769 Wont Root

I was wondering if anyone had any advice on the next step I should take to root my phone?
I have the a T-Mobile LG Optimus L9 P769 with the following OS; Android 4.04 with Firmware 10g.
I have tried the following methods to root the device....with no luck:
Gingerbreak, root with restore, one click root, recoveryClockWorkTouch, and pretty much most of the others out there.
Is it possible that the phone has some form of modified privileges done before hand?
Is there a specific way to root my phone, or am I missing an essential step?
Please any advise or tips would be greatly appreciated.
Thank you.....
Try lelus method of rooting, it works for all firmware n all variants. Check in development section :good:
Gh0sT.RPG said:
Try lelus method of rooting, it works for all firmware n all variants. Check in development section :good:
Click to expand...
Click to collapse
Thank you, I will check it out.... I appreciate the response
ppotter003 said:
Thank you, I will check it out.... I appreciate the response
Click to expand...
Click to collapse
u thanked and appreciated the response but it will be good if you press Thanks button from now on. I did for GH0ST.RPG on your behalf.
Anyone able to root lg 10g yet?
Sent from my LG-P769 using xda app-developers app
mugenex said:
Anyone able to root lg 10g yet?
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
You must have been gone for a long while, lol yes the 10g is rooted now.
Thank.. actually i read several place in the forum, i couldnt find the perfect answer. Some believed the 10g still lock by lg. Anyway, can u provide the link please. Thank you
Sent from my LG-P769 using xda app-developers app
mugenex said:
Thank.. actually i read several place in the forum, i couldnt find the perfect answer. Some believed the 10g still lock by lg. Anyway, can u provide the link please. Thank you
Sent from my LG-P769 using xda app-developers app
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2173465
Sent via Tapatalk 2

P769bk how to unlock bootloader?

I was wondering if there are ANY methods too unlocking my bootloader on 4.1.2 jellybean I am rooted with CWM V1.5 I've looked continuous times in android development and general and cannot find a method that says for p76920d.
Thanks for your time
Sent from my LG-P76920d using xda app-developers app
It's in q&a.
http://forum.xda-developers.com/showthread.php?p=39333298
Sent from my Nexus 7 using Xparent Skyblue Tapatalk 2
Thats says its experimental to wait untill jellybean update. Thanks for the link though
Sent from my LG-P76920d using xda app-developers app
So the link answered your question currently it's the only way
Sent from my Nexus 7 using Xparent Skyblue Tapatalk 2
Yeah, sorry Domonick5150. Somairotevoli is correct, sadly. I guess we need to keep waiting.
Thank you i guess it'll be released when they figure it out thanks for the information .
Sent from my LG-P76920d using xda app-developers app
Domonick5150 said:
Thats says its experimental to wait untill jellybean update. Thanks for the link though
Sent from my LG-P76920d using xda app-developers app
Click to expand...
Click to collapse
"If you want to experiment.." Translates to, if you're willing to try...
It works.. I am currently on the latest ota 4.1.2 P769 20d with unlocked bootloader, rooted, cwm recovery. YMMV, try at your own risk.
It seems like he said you can experiment too unlock it or wait for jelly bean update, thank you ill try it today i'm tired of waiting xD
clockcycle said:
"If you want to experiment.." Translates to, if you're willing to try...
It works.. I am currently on the latest ota 4.1.2 P769 20d with unlocked bootloader, rooted, cwm recovery. YMMV, try at your own risk.
Click to expand...
Click to collapse
Domonick5150 said:
It seems like he said you can experiment too unlock it or wait for jelly bean update, thank you ill try it today i'm tired of waiting xD
Click to expand...
Click to collapse
The jelly bean update came, it's not unlockable as hoped.. So it's the only method, currently, there isn't much dev activity on this device either, if you notice in the subforums. So waiting might be a long time, or a surprise..
If you don't mind me asking, what in particular are you need to do that requires unlocked bootloader? We can already root and bootstrap cwm recovery without unlocking it.
thanks,
I would like to use custom ROMS on my phone, can you do that without unlocking the bootloader?
i have CWM already also.
The only ROM available is an unofficial cyan 10.1 ... Its working alright for me so far. It was a pita unlocking it, so I wouldn't recommend it unless you know you want cyanogen (a buggy one).
Ignore my SIG, my 769 thinks its 760 now
Sent from my LG-P760 using xda premium
Domonick5150 said:
I would like to use custom ROMS on my phone, can you do that without unlocking the bootloader?
i have CWM already also.
Click to expand...
Click to collapse
No you need unlocked boot loader and yes the only rom is the CM10 has a couple of bugs but i like it

(Unlock Bootloader Official)P769 V20F

Guys Guys I found out that you can unlock bootloader on v20f OMG OMG OMG OMG OMG OMG OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL BE POSTING BACK,,,, :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh:
After Reading Some More It says you will lose all your data.. mmmmm gunna check something out
Part 1 Is only for people who has not unlocked bootloader Part 2 is for people who have unlocked bootloader and Part 3 Is For Everyone
Oh and Sorry for the cruddy tutorial will update it tomorrow its 3:24 am in Cali and i want to go to Sleep
Part 1
(Update) Well Its Official we have an unlocked bootloader on the P769 i attached a picture sorry its kinda blury i had to take it with my sisters ipod...
Ok well what you have to do dont worry its really easy
1) Download V20F kdz
2) Flash That kdz (dont worry about root well get that later....)
3) After it Boots Make sure you have signal to network (doesnt matter if it has service or not i havent paid mine yet and it unlocked)
4) Connect Phone To Computer and make sure you have USB Debugging on and then run the Following Command
"adb reboot oem-unlock"
after you run that command your phone should reboot i do not know why but there is no prompt like the p760 (if you want to confirm you have it unlocked do the following 1)turn off phone then hold volume up and connect usb from computer and you should get S/W update and at the top left Bootloader Status: Unlocked)
and there you have official unlocked
Part 2
ok now for those of you who did it the hard way and unlocked before i recommend you take this unlock but up to you first what you wan to do is
Make sure you have this installed "http://forum.xda-developers.com/showthread.php?t=2119090" and setup
then download this
Lelus Fastboot Script : "http://forum.xda-developers.com/showthread.php?t=2292828'
and then choose the one that says P769 ICS U and X Boot choose that then it will tell you do the battery thing then it will flash and now you have original X and U Boot Now you can flash the kdz and do the unlock make sure you do this first!!!
Part 3
Now to flash a recovery and flash root
Make sure you have it on your sd card there is different ones link are scattered so ill get them in a while
Install this http://forum.xda-developers.com/showthread.php?t=2292828 then start fastboot and flash a recovery image to your phone
then make sure you have the superuser zip on your sdcard then boot to recovery and flash the zip after you flash it now reboot and enjoy you have unlocked bootloader with root and cwm now just flash another rom and there Cheers
Superuser Zip: https://docs.google.com/file/d/0B059sYrh0T19UkxhLWtJaDFqZW8/edit?usp=sharing
carloswii5 said:
Guys Guys I found out that you can unlock bootloader on v20f OMG OMG OMG OMG OMG OMG OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL BE POSTING BACK,,,, :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh:
Click to expand...
Click to collapse
Is it an easier method than other one? Hope so!
Sent from my LG-P769 using Tapatalk 4 Beta
geeshiet said:
Is it an easier method than other one? Hope so!
Sent from my LG-P769 using Tapatalk 4 Beta
Click to expand...
Click to collapse
Should be but ill update shortly
What a useful post... better try first, then report. Whats the sense behind omg omg omg omg?
Sent from my LG-P760 using xda app-developers app
Great find man, lets us know how it goes.
Sent from my LG-P769 using xda app-developers app
N00BY0815 said:
What a useful post... better try first, then report. Whats the sense behind omg omg omg omg?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
My apologize PRINCESS ill do that first next time....
carloswii5 said:
Guys Guys I found out that you can unlock bootloader on v20f OMG OMG OMG OMG OMG OMG OMG!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL BE POSTING BACK,,,, :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh:
(Update) After Reading Some More It says you will lose all your data.. mmmmm gunna check something out
Click to expand...
Click to collapse
So where are you getting your information that the bootloader can be opened on this version.
kuma82 said:
So where are you getting your information that the bootloader can be opened on this version.
Click to expand...
Click to collapse
You learn alot from navigating through KDZ's(bin files) and reading the information thats inside them :angel:
N00BY0815 said:
What a useful post... better try first, then report. Whats the sense behind omg omg omg omg?
Sent from my LG-P760 using xda app-developers app
Click to expand...
Click to collapse
What a useful post, huh
What if you already updated officially....do you need to flash the .kdz?
Sent from my LG-P769 using XDA Premium HD app
jtragna said:
What if you already updated officially....do you need to flash the .kdz?
Sent from my LG-P769 using XDA Premium HD app
Click to expand...
Click to collapse
My question exactly.
Sent from my LG-P769 using Tapatalk 4 Beta
Can't we just use terminal emulator and type
"reboot oem-unlock"?
EDIT: Nvm it says action not permitted
sent from my locked rooted P769 v20f
I'm on YouTube (BioDesigner48)
Than You Carlosii5!
Has anyone else successfully unlocked with this process? Also will we still be able to boot CM10?
Sent from my LG-P769 using xda app-developers app
I am a huge noob
Hey i have no idea what to do i am a huge noon at these things andi want to get my lg optimus l9 p769 rooted. What relly confused me is when you said i had to flash something and i thought you had to be rooted to do that. Please help.
I tried the ADB command and the device rebooted. When I went into software update mode it did not mention anything about the bootloader being unlocked. I'm going to try again in 30 minutes as I had just put in the SIM card prior to attempting to unlock. Not sure if it makes a difference but the SIM card does not have active service and I flashed the 20D KDZ before doing the OTA update to 20F.
EDIT: Waited 2 hours and tried to unlock again, no dice. I guess I'll wait for further instructions.
Nice find! I'll have to try this tonight.
Sent from my LG-P769 using xda app-developers app
I know this is a noob question, but where's the KDZ at? It isn't in cmahendra's repository and I really want to unlock my bootloader tonight. BTW, I'm not new. Well technically yes, but I've been lurking these forums since late January. So um, yeah. I need the KDZ and such. I'm already on P769F but I got it through OTA... I went into Terminal Emulator and I thought I had something, I went "su" and then "reboot oem-unlock" and it would unlock, but my phone didn't show the confirmation in S/W update mode. I'm using artas locked bootloader recovery if that means anything. Wait, actually I'm going to try something.. I might have just answered my plethora of questions. Sorry for the useless post xD
Thanks Carloswii5. When you get a chance, please give some more detail, and possibly links to the correct version of what we need to download\install. Great find, though!
BioDesigner48 said:
Can't we just use terminal emulator and type
"reboot oem-unlock"?
EDIT: Nvm it says action not permitted
sent from my locked rooted P769 v20f
I'm on YouTube (BioDesigner48)
Click to expand...
Click to collapse
I got the tmobile lg p769 on wind mobile v21b. I just did the reboot oem-unlock through terminal. Then powered off phone and plugged in sw upgrade. And says bootloader status unlocked. It was backwards because mines been unlocked for a while. But maybe u could use the v21b cwm backup and do the unlock. I stayed on the wind rom for move apps to sd is built in. I get the same 4g coverage from tmobile. Just changed the apns.config.xml with tmobiles v20f and set up apns manully. The same tweaks work on the wind version as the others. Oh theres a telepony.xml u need to replace as well. Just thought everyone should know how much of an asset wind 21b can be no matter what carrier u got.
Type su in terminal then press enter. Then type unlock command. It rebooted but I'm not near a PC to confirm (20f via cwm update).
Sent from my LG-P769 using xda app-developers app

To debloat or not to debloat, that's is my question...

I wanna debloat my T-Mobile L9, but does it make a difference?
I already now the repercussions, can't fact reset, update, etc.
But I would like to debloat, if it makes my phone have more memory, less lagy etc..
Thanks in advance :thumbup:
sent from my rooted P769 v20f
I'm on YouTube (BioDesigner48)
Need Help ROOTing? PM me I'll try to help.
I would deblat, I did it to mine and I have way more space and I see a speed increase
Sent from my LG-P769 using xda app-developers app
Battery lasts longer without Lookout and myAccount running. I also used Build.prop Tweaker to increase the WiFi scan interval. :thumbup:
Sent from my LG-P769 using XDA Premium 4 mobile app
LaDY Vengeance said:
Battery lasts longer without Lookout and myAccount running. I also used Build.prop Tweaker to increase the WiFi scan interval. :thumbup:
Sent from my LG-P769 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Actually, I debloated a day after I posted this, and not only did the battery get a bit better, but got A BUNCH MORE RAM!
Downside, I'm still on 20f add if I ever have to use the 20h nandroid, imma have to do it all over again :banghead:
But thank god for that system tuner trick ^.^
sent from my rooted P769 v20f
I'm on YouTube (BioDesigner48)
Need Help ROOTing? PM me I'll try to help.
BioDesigner48 said:
Actually, I debloated a day after I posted this, and not only did the battery get a bit better, but got A BUNCH MORE RAM!
Downside, I'm still on 20f add if I ever have to use the 20h nandroid, imma have to do it all over again :banghead:
But thank god for that system tuner trick ^.^
sent from my rooted P769 v20f
I'm on YouTube (BioDesigner48)
Need Help ROOTing? PM me I'll try to help.
Click to expand...
Click to collapse
Why not use voodoo OTA root keeper and install the 20h update?
EpicLordPhone said:
Why not use voodoo OTA root keeper and install the 20h update?
Click to expand...
Click to collapse
Well, unfortunately if you use any xposed mods, have the locked cwm recovery and uninstall bloat, the ota will fail and messes up your phone.
sent from my rooted P769 v20f
I'm on YouTube (Toa Kaidoa)
BioDesigner48 said:
Well, unfortunately if you use any xposed mods, have the locked cwm recovery and uninstall bloat, the ota will fail and messes up your phone.
sent from my rooted P769 v20f
I'm on YouTube (Toa Kaidoa)
Click to expand...
Click to collapse
Oh, Sorry I thought you could, I did but after I flashed the KDZ back and after hard reset

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