Hello all,
I do a mistake when I upgrade my 3D optimus from 10K to V21B , so I don't have the information that the V21B is not ROOTED YET , so I want to downgrade ,or flash with another firmware can be rooted,
so it's possible to downgrade to the other firmware with this firmware V21B not rooted? I hope it's can be done?
many many Thanks for your help
unixman77 said:
Hello all,
I do a mistake when I upgrade my 3D optimus from 10K to V21B , so I don't have the information that the V21B is not ROOTED YET , so I want to downgrade ,or flash with another firmware can be rooted,
so it's possible to downgrade to the other firmware with this firmware V21B not rooted? I hope it's can be done?
many many Thanks for your help
Click to expand...
Click to collapse
Just follow this guide:
http://forum.xda-developers.com/showthread.php?t=1287236
it can be done I have done it many times going from froyo to Ginger bread and vice versa.
good luck
Related
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
So I had root on GB :good:, and had to unroot before updating to ICS ^.^ Is there a way to root v30c?
Thank you
nextlevelcolors said:
So I had root on GB :good:, and had to unroot before updating to ICS ^.^ Is there a way to root v30c?
Thank you
Click to expand...
Click to collapse
I'm looking for the same thing.. Has anyone found a way to root the LG p925g with V30C ICS yet??
One way is to install xbsall's vR3D custom ROM based on v30C; tutorial and link to his page here
http://forum.xda-developers.com/showthread.php?t=2195753
If you do not want to flash, I think there is some app that can do it (I have not used it and do not know the name) or there is the 'all-in-one' tool that I think does it (by oshacking, I think).
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?
After update it's impossible to root.
Android 4.4.2
Kernel 4.3.0
Build KOT491.D6050d
Soft D60520d-EUR-XX
Towelroot, Stump, VRoot... nothing works now..
If anyone knows how to root it or downgrade it please tell, life is boring without rooted phone
Hi,
You can carefully review this thread, and ask for help there if still needed,
http://forum.xda-developers.com/showthread.php?t=2754633
Good luck!
I think i got it
I had to downgrade firmware using LG Flash Tool and stock .kdz file.
I followed this and it worked fine: http://forum.xda-developers.com/showthread.php?t=2797190
And i downloaded firmware from here http://www.smartphenom.com/2014/07/lg-optimus-l9-ii-d605-firmware.html version D60520A solved my problem, i never tried 20B version and version 10A gave me bootloop.. Be careful
Now towelroot works and i'm happy again!
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