[Q] Lg Optimus 3D downgrade - General Questions and Answers

Hi. Congratulations on the work you are doing here. I have an Optimus 3d P920 phone. I recently upgraded to ICS european open version V30a using Lg flash tool and the guides from your site. My phone is Greek and only V21e exists at the moment. So my warranty is void. I need to take it to LG as it became very slow. How can I downgrade to official Greek V21e wihout LG understanding that I upgraded the phone? Please can you provide a step by step guide as I am a noob? Thank you in advance for your replies.

Download LG flash tool..Check this out and find your firmware (if its not here just google it):
http://forum.xda-developers.com/showthread.php?t=1246678

big noob said:
Download LG flash tool..Check this out and find your firmware (if its not here just google it):
http://forum.xda-developers.com/showthread.php?t=1246678
Click to expand...
Click to collapse
Is this method working for all firmwares?

Yes
Sent from my HTC One X using Tapatalk 2

Thank you again. So I would like to have the ability to play with my phone's cpu speed etc. my phone is SU760. What rom should I use? Can I use stock rom V30a and use another kernel so as to perform some tweaks? Sorry for my noob questions. What is the best custom rom to use on SU760?

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[Q] Few important questions ...

Well, I have questions about O3D
1. It's safe to flash v20p (from p929 AT&T) to my p920 ?
2. or if I have V10k (froyo) can I safetly install roms from p925 LG Thrill from LG Thrill 4G android development (ex. Mokee for p925) ?
andriu123 said:
Well, I have questions about O3D
1. It's safe to flash v20p (from p929 AT&T) to my p920 ?
2. or if I have V10k (froyo) can I safetly install roms from p925 LG Thrill from LG Thrill 4G android development (ex. Mokee for p925) ?
Click to expand...
Click to collapse
Generaly I would not recomend flashing with a software not designed for your model. Just look how many people have bricked their phones by playing around.
1. 20p has US baseband so if u live in Europe then dont flash it.
2. Before u start flashing GB roms u need to bee on GB baseband. So the first thing is to flash Italian 20E kdz or I would rather recomend HonKong 20g. Then root the phone and install CWM ( do not use the app from play store, use the program provided here in the forums )
If you are on ext4 u need to change it back before doing anything. And do not use nandroid restore made with froyo
Sent from my LG-P920 using XDA

LG Optimus 3D Max - a few questions

Hi,
First of all, I want to apologize for my "English" but I'm using www.translate.google.com If you renew on the sorry but I can not find anywhere answer to my problems.
I want to buy a phone LG P720 Optimus 3D Max. But in my country there is no forum for this phone, so maybe here I find answers to my questions.
1.)It is possible to do "root" in this model? If so, I would ask for a link to the xda topic adequately. I found something like this http://forum.xda-developers.com/showthread.php?t=1886057 I can use this method?
2.)How to upload ROM? Is using the instructions for the model LG Optimus 3D P920 phone will destroy not? Alternatively, this method will work with the P720? http://forum.xda-developers.com/showthread.php?t=1244490
3.)There are already a ROM for your phone based on ICS? Or if I can upload the ROM for the P920 model? I found a guide on how to "przerobiać" ROM http://forum.xda-developers.com/showthread.php?t=1908008 You could use this means to convert P920 ROM to P720?
Please bear with us and thank you for any help
I greet
Vienio_CzA
Vienio_CzA said:
Hi,
First of all, I want to apologize for my "English" but I'm using www.translate.google.com If you renew on the sorry but I can not find anywhere answer to my problems.
1.)I want to buy a phone LG P720 Optimus 3D Max. But in my country there is no forum for this phone, so maybe here I find answers to my questions.
*2.)It is possible to do "root" in this model? If so, I would ask for a link to the xda topic adequately. I found something like this http://forum.xda-developers.com/showthread.php?t=1886057 I can use this method?
3.)How to upload ROM? Is using the instructions for the model LG Optimus 3D P920 phone will destroy not? Alternatively, this method will work with the P720? http://forum.xda-developers.com/showthread.php?t=1244490
4.)There are already a ROM for your phone based on ICS? Or if I can upload the ROM for the P920 model? I found a guide on how to "przerobiać" ROM http://forum.xda-developers.com/showthread.php?t=1908008 You could use this means to convert P920 ROM to P720?
Please bear with us and thank you for any help
I greet
Vienio_CzA
Click to expand...
Click to collapse
1 ?
2 Yes
3 Yes
4 No and No
Yes it has been reported that the root method works but I don't know for myself
Sent from my LG-P925 using xda app-developers app
wayno140 said:
Yes it has been reported that the root method works but I don't know for myself
Sent from my LG-P925 using xda app-developers app
Click to expand...
Click to collapse
Hey !
I am the founder of ROOT METHOD for OPTIMUS 3D MAX
And it works like CHARM
CUSTOM ROM WILL BE AVAILABLE IN SOME DAYS BASED ON GINGERBREAD.
But cannot say of ICS.
@defcomg
Sorry for point 1, a small error crept in So, using the method of loading the LG P920 ROM with no damage to the phone? I'd rather be sure than later have problems with the service. But now I have another question, are there any ROM for the LG P720? If I understand you correctly that it is not possible to convert the LG P920 ROM?
@Eklovya
If you are the creator of this method is that you get so that the holder of the LG P720? And Romy from gingerbread only after some time will be available, and I can forget ics?
I wonder why that fla P920 ROM does not work on the LG P720, as it's the same phone, just stronger? And frankly I hope that the world's largest Foum some users will be LG P720, and here I see that the phone is even less popular than in Poland.
So maybe better to buy LG P920, better support for him It's nice that it was as if someone was so good and gave a link to the page where it is paired with the LG P720. How much is weaker than the LG P720 phone.
Vienio_CzA said:
@defcomg
Sorry for point 1, a small error crept in So, using the method of loading the LG P920 ROM with no damage to the phone? I'd rather be sure than later have problems with the service. But now I have another question, are there any ROM for the LG P720? If I understand you correctly that it is not possible to convert the LG P920 ROM?
@Eklovya
If you are the creator of this method is that you get so that the holder of the LG P720? And Romy from gingerbread only after some time will be available, and I can forget ics?
I wonder why that fla P920 ROM does not work on the LG P720, as it's the same phone, just stronger? And frankly I hope that the world's largest Foum some users will be LG P720, and here I see that the phone is even less popular than in Poland.
So maybe better to buy LG P920, better support for him It's nice that it was as if someone was so good and gave a link to the page where it is paired with the LG P720. How much is weaker than the LG P720 phone.
Click to expand...
Click to collapse
I am having p725 ,
It is same as p720 just without NFC.
And P920 is old but if you wanna go for a 3d phone with a good support you can go for p920.
But just want to tell you that developer support and customers are not created in a day
Its been 2 years since release.of p920 but p720 is recently released.
It also has some users around 200. If you wanna search facebook lg optimus 3d maxx p720/p725 .
You will get to know.
Sent from my LG-P725 using xda premium
@Eklovya
I do not know how in the world but in Poland this phone was released almost a year ago and still there is no ROM for it, and on the phone with the prior two years is even ICS, a little strange. How have you ROM on your phone?
I'm afraid that if I want to buy LG P920 is right I will have to replace it because of poor performance, unless I'm wrong and 512MB RAM is enough? I've heard that you can tweak the processor to 1.2GMz, did it?
Buy P720 its newer and wait until developers make custom ROMS.
I do not want to be mean or anything, but the phone is on the market for almost a year, and there is not even a gingerbread ROM, let alone ICS? I understand it's a big lovable bear LG to blame for this state of affairs.
I would prefer a newer model, but the idea that it will never likely, will not be given to me korzysztać of ICS is more inclined towards the LG P920.
If i was able to port ICS to P920 i m sure somebody will be able to port ICS to p720.
Its simple like that..
If you think you cant take that risk, buy P920 that already has plenty of ROMS.
If you think P920 is old and outdated dont buy it.
The choice is yours to make.
Your options are 4.
1) Is buy P920 because it already has plenty of ROMS.
2) Is buy P720 and wait until free custom ROMS are made.
3) Is buy any phone you like, find a Developer and PAY him to make you anything you like.
4) Dont buy LG.
Buy 870 and have official ICS and 16G internal memory too.
Sent from my LG-SU870 using xda premium
xbsall said:
If i was able to port ICS to P920 i m sure somebody will be able to port ICS to p720.
Its simple like that..
If you think you cant take that risk, buy P920 that already has plenty of ROMS.
If you think P920 is old and outdated dont buy it.
The choice is yours to make.
Your options are 4.
1) Is buy P920 because it already has plenty of ROMS.
2) Is buy P720 and wait until free custom ROMS are made.
3) Is buy any phone you like, find a Developer and PAY him to make you anything you like.
4) Dont buy LG.
Click to expand...
Click to collapse
The best answer you can get... nice Xbsall
@Xbsall
You do not understand me. While writing the previous post I meant is that so far there is not even gingerbread for LG P720. I'm not saying that you will never ICS for LG P720 but looking at the interest in this phone people like you, hope is small, because as I mentioned there are no, no ROM for this model. Although how that was one custom rom for the 720 is Bła by any chance, and so, you know.
For updates to ICS from LG not count confidently: D I have a TV that's from 2011, and I know very well how LG treats its customers. Odwóch year promised to update the flash and he was so far gone.
You write that I paid someone to do it for the LG P720 ICS.Ale first nikoga do not know what would have such made ​​such an attempt, and secondly, the ROM would probably not develop a lot of bugs. I think that you have any contacts or something, you do not będęprosił because I know that, and so you have a lot of work
@ 2old4toys
I can not buy LG-SU870 because Poland is the GSM standard, and the phone supports only CDMA 800/1900. How do I fix this'm wrong
Trying really hard to understand this google translation...
Anyway the thing is that for P720 there arent any ROMS and yes LG sucks at updating phones (we still dont have official ICS for P920, not that i care much about it).
So once again the choice is yours..wait.. or buy something else.
Unless you wanna buy me an LG P720 for christmas so i can make a few ROMS for you...

Lg p920 upgrade from gb to ics or jb

Hi Guys
I have 1 LG P920 phone with Orange UK BASEBAND V20D 27 JUNE 2012
I would like to upgrade to ICS or even better JB , I tried the ROM from Cyano cm 10.01 but the phone crashing every 5 mm!
Can anyone on here guide me on how to upgrade my phone on an easy way ? I saw on here a loads of guides but I found it a bit complicated in order to upgrade my phone.
Please give me some advise on where I can find on this site an easy ( step by step guide) ?
Thanks a millions!
Claudio :silly:
First of all for cm you need the latest boot loaders flash them and no crashes will happen
And about the ICS just follow the sticky guide for flashing firmwares
sent from my lg-p920 powered with xbsall's finest work
Hi guys
I d like to know how to flast a different bootloader as on this forum there is a loads of different opionion and guide.
I d like to upgrade my P920 from Gingerbread to ICS or JB I currently got Baseband : 20d and Orange Uk branded software
Can anyone please help me out? I just need clear instructions on how I can update my phone .
Thanks in advance
Claudio
claudioglasgow said:
Hi guys
I d like to know how to flast a different bootloader as on this forum there is a loads of different opionion and guide.
I d like to upgrade my P920 from Gingerbread to ICS or JB I currently got Baseband : 20d and Orange Uk branded software
Can anyone please help me out? I just need clear instructions on how I can update my phone .
Thanks in advance
Claudio
Click to expand...
Click to collapse
Good full guide on flashing ICS
http://forum.xda-developers.com/showthread.php?t=2191698

[Q] Install rom P500 for KU3700 ?

I have 1 LG KU3700 portable equipment from South Korea, is the original LG Optimus One P500. Question, can I install rom of P500 and KU3700 not it?
Help me
what? can you clarify ur question... specifically...
voltaire23 said:
what? can you clarify ur question... specifically...
Click to expand...
Click to collapse
He's specifically saying that can he install P500 ROMs on his Korean Optimus One
@ the op
I am not sure but there were indeed some users of KU3700/SU3700
Sent from my GT-I9082 using Tapatalk
@akiratoriyama @rylryl79
Yeah, I looked around XDA and while there are some users of the Korean Optimus One, the impression I'm getting is that stuff made for the P500 is not compatible with the Korean Optimus One versions. Even trying a P500-based recovery will brick your phone (or get you stuck at the LG logo). There's a custom recovery for the KU3700, but as far as I know, no custom ROM yet.

Hello

I am using LG OPTIMUS 3D CUBE SU870 Android 2.3.6
I decided to update its software to 4.0.4 icecream sandwich, and updated successfully.
But after update my mobile is gone slow, so i decided to go back to 2.3 gingerbread. I searched much for gingerbread but i can't find.
So kindly help me to download 2.3.6 gingerbread for my LG OPTIMUS 3D CUBE SU870 FIRMWARE in KDZ format.
Thank You
Anas Ahmed Anis said:
I am using LG OPTIMUS 3D CUBE SU870 Android 2.3.6
I decided to update its software to 4.0.4 icecream sandwich, and updated successfully.
But after update my mobile is gone slow, so i decided to go back to 2.3 gingerbread. I searched much for gingerbread but i can't find.
So kindly help me to download 2.3.6 gingerbread for my LG OPTIMUS 3D CUBE SU870 FIRMWARE in KDZ format.
Thank You
Click to expand...
Click to collapse
I've looked everywhere, it seems that 2.3.6 isn't available anywhere.
Sent from my SCH-I535 using Tapatalk
Thanks for reply.....
If we cant find old software then we have another way to get rid of that slow software..... I think by installing a rom we can get a solution.....
In this way i have a question that, for installing a rom bootloader must be unlocked?
If yes so kindly help me to unlock my bootloader.....
Another question is that, is there any software by which we can install rom on phone........
Thanks
Anas Ahmed Anis said:
If we cant find old software then we have another way to get rid of that slow software..... I think by installing a rom we can get a solution.....
In this way i have a question that, for installing a rom bootloader must be unlocked?
If yes so kindly help me to unlock my bootloader.....
Another question is that, is there any software by which we can install rom on phone........
Thanks
Click to expand...
Click to collapse
You can try this for unlocking bootloader
www.unlock-bootloaders.racing/2016/12/lg-optimus-3d-cube-su870-4545.html
The software needed to install custom ROMs is called a custom recovery such as TWRP. When you get your bootloader unlocked you'll need to do a google search for:
"Custom recovery for (your model number)"
Or a search for:
"TWRP for (your model number)"
Sent from my SCH-I535 using Tapatalk

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