Undowngradable P920s DEVS HELP! - LG Optimus 3D

A lot of people that upgraded to xbsall's ported ics are unable to go back to gingerbread.
We flash ics its fine we flash v21e bin from the guide its bricked.
We did a lot of methods but we were unable to downgrade.
Xbsall thinks we need a special bin rom but i have been unable to locate the source of the problem as my knowledge of android or linux is little compared to that of windows.
So we need help devs...
Any advice or theory would be appreciated...
Sent from my LG-P920 using xda app-developers app

boltthrower56 said:
A lot of people that upgraded to xbsall's ported ics are unable to go back to gingerbread.
We flash ics its fine we flash v21e bin from the guide its bricked.
We did a lot of methods but we were unable to downgrade.
Xbsall thinks we need a special bin rom but i have been unable to locate the source of the problem as my knowledge of android or linux is little compared to that of windows.
So we need help devs...
Any advice or theory would be appreciated...
Sent from my LG-P920 using xda app-developers app
Click to expand...
Click to collapse
After flashing does your device power up?

It doesn't power up.
Does nothing actually.
When i flash ics from xbsall it boots
Not with gingerbread.
It's something to do with the boot part of the rom but i can't put my finger on it.
Sent from my LG-P920 using xda app-developers app

boltthrower56 said:
It doesn't power up.
Does nothing actually.
When i flash ics from xbsall it boots
Not with gingerbread.
It's something to do with the boot part of the rom but i can't put my finger on it.
Sent from my LG-P920 using xda app-developers app
Click to expand...
Click to collapse
ok familiar with fastboot?

Yes pretty much so. But i'm not home yet. When i get home i'll pm you.
What do you think is the problem ? Any predictions.
Sent from my LG-P920 using xda app-developers app

boltthrower56 said:
Yes pretty much so. But i'm not home yet. When i get home i'll pm you.
What do you think is the problem ? Any predictions.
Sent from my LG-P920 using xda app-developers app
Click to expand...
Click to collapse
x-loader
u-boot
im off for a few more beers i'll check my PM when I get back :good:

http://forum.xda-developers.com/showthread.php?t=2037287

Related

[Q] how can I unlock the P920 for free?

how can I unlock the P920 for free?
Please help me
just root it with megatron
Sent from my LG-P920 using xda premium
I think he is talking about sim lock.
Sent from my LG-P920h using xda app-developers app
jonhgaspar said:
how can I unlock the P920 for free?
Please help me
Click to expand...
Click to collapse
Call AT&T and get the unlock code.
Say you're going out of the country and it won't work where you're going.
Fail....
What I wanted was to get another room but it the superclickone and Megatron, and both fail. I do not know what to do ....
I Have p920, version v20a android version 2.3.5.
Help me please to root
Thanks :good:
.
And display error mensage.
Sent from my LG-P920 using xda app-developers app
jonhgaspar said:
What I wanted was to get another room but it the superclickone and Megatron, and both fail. I do not know what to do ....
I Have p920, version v20a android version 2.3.5.
Help me please to root
Thanks :good:
Click to expand...
Click to collapse
try factory restoring your phone then run megatron again
but with a factory reset will I lose all right?
Thanks
Whats the error message
Sent from my LG-P920 using xda app-developers app
Block in step 7 if I used super clip one.
Done
done, but now wanted to know what is the best rom.
Thanks all
Depends what you want out of your rom
Sent from my LG-P920 using xda app-developers app
Normal, more faster, good stability, etc
Prometheus project and acidhazard are the best in my opinion
Sent from my LG-P920 using xda app-developers app
But I wont in portugese language
And the AcidHazardROM working to 3d plataform?
Yes only cyanogen based roms don't have full 3d capabilities
Sent from my LG-P920 using xda app-developers app

3d roms for optimus 3d

Is there any 3d roms for the optimus 3d yet wanna root and put new rom on but dont want to lose any of the features
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scouse83 said:
Is there any 3d roms for the optimus 3d yet wanna root and put new rom on but dont want to lose any of the features
Sent from my LG-P920 using xda premium
Click to expand...
Click to collapse
Really did you even search try looking in the development section there are many roms with full functionality of the phone
Sent from my LG-P920 using xda app-developers app
This is working pretty good,but it looks like you need to do some reading
[ROM's][KERNEL's] The Promethius Project V1.4
Am goin to ignore the stupid name calling and just say ive tryed megatron to no sucsess didnt root my phone can anyone suggest a other way off rooting it easy
Sent from my LG-P920 using xda premium
scouse83 said:
Am goin to ignore the stupid name calling and just say ive tryed megatron to no sucsess didnt root my phone can anyone suggest a other way off rooting it easy
Sent from my LG-P920 using xda premium
Click to expand...
Click to collapse
Megatron is all that works on o3d gingerbread
Sent from my LG-P920 using xda app-developers app
It dosnt work for me lol cud that be because itts still on froyo maybe it says i am upto date with updates
Sent from my LG-P920 using xda premium
Froyo, yikes. Update to gingerbread with kdz method asap. Froyo is slow and battery drain was diabolical.
Ignore the "no updates" rubbish, that's just your carrier who can't be bothered to give you any.
Pete
Sent from my LG-P920 using xda premium
Whats the kdz that you said about and how would i do that
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92 posts....
Stunningkun said:
92 posts....
Click to expand...
Click to collapse
What lol
Sent from my LG-P920 using xda premium
You are mucking up the forums with questions that have been answered over and over. Please use the search button. I think it's one of the rules (or at least it should be). Everything you need to know is in the dev section. Reading will make you more knowledgeable about your phone, its capabilities and this entire forum.
Good luck rooting your phone and trying new roms.
Sorry i just dont seem to get the right response when i post in right place for some reason. But i will do it from now on.
Thanks i have rooted it now just want decent rom just hard having time to do it with kids n stuff
Sent from my LG-P920 using xda premium
scouse83 said:
Sorry i just dont seem to get the right response when i post in right place for some reason. But i will do it from now on.
Thanks i have rooted it now just want decent rom just hard having time to do it with kids n stuff
Sent from my LG-P920 using xda premium
Click to expand...
Click to collapse
Good that you have rooted successfully.
21E baseband is the one that doesn't have the :GHOST CALLS" issue.
ROMs are sensitive to the baseband versions, so please be careful about te ROM you are trying out else you will face no network / boot loop / stuck on LG screen.
If you can flash Baseband 21E, then Promethius ROM 1.4 with Promethius Kernel v 1.4.5.1 ( please check for kernel versions with + and without + in the end) will give out the best battery life (as per my experience)
(He seems to be the only one active ROM developer left)
All the best
schubeir
Ive tryed that rom a couple of time twice had no network signal and once stuck on lg screen bloody pain. I thought it was coz i was still running froyo but since on gb still wont work and for sum reason it wont flash the kernals all a bit of a blag for me so just on rooted stock rom now lol
Sent from my LG-P920 using xda premium
You must be on GB and baseband 21e to use latest prometheus roms, and kernels.I think you can use Prometheus 1.3 rom with 1.3 kernel, and you will have signal.
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Do you have a link to the 1.3 rom an kernel mate
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http://forum.xda-developers.com/showthread.php?t=1639133
You have all the links here.Just scrol down until u see it.
Sent from my LG-P920 using xda app-developers app

lg mytouch c800 keyboard isn't working that good

my keyboard freezes the screen but stil type the word but can't see because its frozen sometime ....it works when it want too .....the phone is roooted, I have no cutom rom either didn't know how to flash so. I didn't try, it just not working that good don't know y
Sent from my LG-C800 using xda app-developers app
Try a factory reset. Or, you could flash CM9. If you need any details on how, find user chui101, he's got all the info on how to get CWM and the CM9 ROM is his creation.
Sent from my LG-C800 using xda premium
gagdude said:
Try a factory reset. Or, you could flash CM9. If you need any details on how, find user chui101, he's got all the info on how to get CWM and the CM9 ROM is his creation.
Sent from my LG-C800 using xda premium
Click to expand...
Click to collapse
willl that mess up my root
Flashing a ROM requires root, man. It won't mess up your root
Sent from my LG-C800 using xda premium

[Q] (Possibly) bricked optimus 3d

So I just installed CM10 nightly ( jelly bean if I'm correct ) and I think something's wrong. When I try to boot it first thing that looks wierd is random colors (shouldnt be like that). After that it boots up after loading and I can use it. After using it for 2-3minutes it just turns itself off and I have to take my battery and put it back in to get it working again for 3minutes. How do I fix this, I am sure I did nothing wrong.
Edit: I installed it over CM7 nightly, I think it might be because I didn't wipe caches, but now I dont have rom manager.
http://forum.xda-developers.com/showthread.php?t=1491870
Try this thread to install recovery then wipe
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capnmorgan80 said:
http://forum.xda-developers.com/showthread.php?t=1491870
Try this thread to install recovery then wipe
Sent from my LG-P920 using xda app-developers app
Click to expand...
Click to collapse
I already said that I can't get on my phone for more than 3 minutes, I don't think that will help
Go back to original gingerbread, and start over againe,if you really want it ...
Sent from my LG-P920 using xda app-developers app
Sv: [Q] (Possibly) bricked optimus 3d
Are you on 21e baseband? If you are. That is your problem. Just change your baseband
Sent from my 3D phone.
lzzar said:
Are you on 21e baseband? If you are. That is your problem. Just change your baseband
Sent from my 3D phone.
Click to expand...
Click to collapse
I might sound like an idiot, but what's that?
AW: [Q] (Possibly) bricked optimus 3d
You have to read a little before you flash your phone... you need your baseband for right communication eith phone. If you want to flash baseband you need flashtool. The files you need are fls files. I consider you to go back to cm7 for now and to read few tutorials, so you have enough expierience to flash cm10. Cm10 had a lot of bugs because its the nighly version. And for most people they need to flash bernis files and wkparks bootloader to get cm10 working.
Sent from my LG-SU760 using xda app-developers app
Itaka06 said:
You have to read a little before you flash your phone... you need your baseband for right communication eith phone. If you want to flash baseband you need flashtool. The files you need are fls files. I consider you to go back to cm7 for now and to read few tutorials, so you have enough expierience to flash cm10. Cm10 had a lot of bugs because its the nighly version. And for most people they need to flash bernis files and wkparks bootloader to get cm10 working.
Sent from my LG-SU760 using xda app-developers app
Click to expand...
Click to collapse
How do I get back to cm7 then, that's my question
AW: [Q] (Possibly) bricked optimus 3d
Can you get in recovery? Or when you get in recovery your phone freeze?
Sent from my LG-SU760 using xda app-developers app

Installing stock FW

Hey guys after using P500 for 2+ years, i shifted to a Nexus 4
Now i want to flash stock ROM and recovery in my P500 because i plan on selling it...these guides seem too old now...
So can somebody help me??
Or provide a link for a working, updated guide
Thanx alot in advance
EDIT: After all researches finally KDZ updater worked!
People say its very risky but to be honest everytime only KDZ updater worked for me after trying other methods
Sent from my Nexus 4 using xda app-developers app
IKnowIRock! said:
Hey guys after using P500 for 2+ years, i shifted to a Nexus 4
Now i want to flash stock ROM and recovery in my P500 because i plan on selling it...these guides seem too old now...
So can somebody help me??
Or provide a link for a working, updated guide
Thanx alot in advance
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Flash Stock rom and recovery
Post here if you want the link
Sent from my LG-P500 using xda premium
Flash ICS by Hephappy, will make it sell better. Also, try flashing Pure Performance Zero to speed things
akiratoriyama said:
Flash Stock rom and recovery
Post here if you want the link
Sent from my LG-P500 using xda premium
Click to expand...
Click to collapse
Yes i need the link...its great if you can provide it plus it will turn this to full stock right??
No root and blah blah
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IKnowIRock! said:
Yes i need the link...its great if you can provide it plus it will turn this to full stock right??
No root and blah blah
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Stock ROM
http://forum.xda-developers.com/showthread.php?t=1824618
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akiratoriyama said:
Stock ROM
http://forum.xda-developers.com/showthread.php?t=1824618
Sent from my LG-P500 using xda premium
Click to expand...
Click to collapse
Ok thanks
I got it done using the KDZ updater
Sent from my Nexus 4 using xda app-developers app
Even i used kdz updater some days back
Just thought not to tell you about it as some said it was risky
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akiratoriyama said:
Even i used kdz updater some days back
Just thought not to tell you about it as some said it was risky
Sent from my LG-P500 using xda premium
Click to expand...
Click to collapse
Yeah ive read about it but its the only method which works for me everytime once got it bricked though, was lucky to get back to life
This time also got a bootloop but after removing the battery and putting it back made it work
Sent from my Nexus 4 using xda app-developers app
flash oldest custom rom that you find and update after with LG Suport Tool to stock 2.2.2 , that will make your phone stock withaout custom recovery or anything else, download from LG site that tool, and 2.2 or 2.2.1 roms you can find in development, something really old
or downgrade to old bb and upgrade with same LG Suport Tool
I think is safest way
grigtm said:
flash oldest custom rom that you find and update after with LG Suport Tool to stock 2.2.2 , that will make your phone stock withaout custom recovery or anything else, download from LG site that tool, and 2.2 or 2.2.1 roms you can find in development, something really old
or downgrade to old bb and upgrade with same LG Suport Tool
I think is safest way
Click to expand...
Click to collapse
Thanx for your support! I got it done using KDZ :good:
Sent from my Nexus 4 using xda app-developers app

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