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Stock Everything Stock

I don't understand these directions from the FAQ:
"Q. How to get back to stock? I need to give my phone to warranty services how do I revert to official LG rom?
A. Check this thread. It is the v10b 2.2 stock rom as a flashable zip package. If you can't access the recovery, then see if the firmware for your country is available here or use this tool. Download the firmware and use the KDZ tool to flash. You will find instructions to use the KDZ tool on this thread. For a picture guide, check this thread.
Also for official GB lovers, see this and this. It is a v20g rom in flashable zip package. Or if you'd rather flash v20c/g roms from LGMDP, the links for that can be found in this thread.
If you are on Optimus V, see http://forum.xda-developers.com/show....php?t=1025911
If you are on the Optimus T, see this post. Uses the KDZ method.
Q. How do I restore the stock recovery?
A. Download the original recovery zip file from here and flash it. (Yes, you can flash a recovery from within recovery itself)"
I have LG P500 from USA T-Mobile. I'm on V20 Baseband.
1)Is kdz the only way to go back to stock?
2)Which way is the safer and better way to get back to stock?
3)How (full instructions) to get back to stock rom for USA T-Mobile?
4)How (full instructions) to get back to stock recovery for USA T-Mobile?

yes you can flash a recovery from recovery, if it is a flashable zip
you need to stick with your phone not other variants of LG p500, O-1(Europe), O-T or O-V, dunno what is the T-mobile USA version, but is it written inside your phone under battery
1) KDZ is for flashing software in your phone, but beware, if you are unexperienced you may brick your phone for good, but you can try it, DO NOT PULL OUT BATTERY OR DO SOMETHING WHILE KDZ IS NOT FINISHED FLASHING PHONE OR YOU WILL HARDBRICK IT (but, I do not think someone at service will notice that, after a hardbrick, it just went dead and nothing else, nobody knows nothing)
2)if you do not know what are you doing, nothing is safe, anyway, as I mentioned, a hardbrick is a hardbrick and if you still have warranty, you are lucky
3)http://forum.xda-developers.com/showthread.php?t=1824618 search there
4) LG P500 doesn't have stock recovery(just bootloader)
if you do not know what to flash try to find a T-mobile rom image (MAKE A REQUEST-someone will post it), and first time when flashing a recovery is to backup original rom for what will come after
LGMDP will work like this, it upgrades rom when you have an older version, so try to flash an older custom rom, find an Froyo 2.2 and flash it as any custom rom, boot, conect your phone to PC, that means that you have LG USB drivers installed, start LGMDP and w8 to detect your phone, after that goto options & help, select country, carrier, phone, w8 to detect latest update, start update
in case that your phone is not detected, boot into recovery, goto mounts and mount USB, that will make LGMDP detect your phone, start updating

androiddownloader said:
I don't understand these directions from the FAQ:
"Q. How to get back to stock? I need to give my phone to warranty services how do I revert to official LG rom?
A. Check this thread. It is the v10b 2.2 stock rom as a flashable zip package. If you can't access the recovery, then see if the firmware for your country is available here or use this tool. Download the firmware and use the KDZ tool to flash. You will find instructions to use the KDZ tool on this thread. For a picture guide, check this thread.
Also for official GB lovers, see this and this. It is a v20g rom in flashable zip package. Or if you'd rather flash v20c/g roms from LGMDP, the links for that can be found in this thread.
If you are on Optimus V, see http://forum.xda-developers.com/show....php?t=1025911
If you are on the Optimus T, see this post. Uses the KDZ method.
Q. How do I restore the stock recovery?
A. Download the original recovery zip file from here and flash it. (Yes, you can flash a recovery from within recovery itself)"
I have LG P500 from USA T-Mobile. I'm on V20 Baseband.
1)Is kdz the only way to go back to stock?
2)Which way is the safer and better way to get back to stock?
3)How (full instructions) to get back to stock rom for USA T-Mobile?
4)How (full instructions) to get back to stock recovery for USA T-Mobile?
Click to expand...
Click to collapse
KDZ is generally discouraged . However if you can find a Nandroid back up of GB , then that would be the safest way . I went back to stock froyo with the help of this thread - http://forum.xda-developers.com/showthread.php?t=1955354

sarans1987 said:
KDZ is generally discouraged . However if you can find a Nandroid back up of GB , then that would be the safest way . I went back to stock froyo with the help of this thread - http://forum.xda-developers.com/showthread.php?t=1955354
Click to expand...
Click to collapse
Thank you, i can just use that other download on the thread if i have the new baseband right? and what about removing cwm? or restoring stock recovery even though there wasnt before

androiddownloader said:
Thank you, i can just use that other download on the thread if i have the new baseband right? and what about removing cwm? or restoring stock recovery even though there wasnt before
Click to expand...
Click to collapse
Your have V20 that is new baseband so any rom from GingerBread onwards is good for you . Stock recovery can be flashed sitting right from custom recovery . Check out this thread for custom recovery and ROM of 2.3.3 - http://forum.xda-developers.com/showthread.php?t=1309744 . If you wanna try lgmdp look at this - http://forum.xda-developers.com/showthread.php?t=1324105

[Q] I need Help

Please help
I have a gionee pioneer p3 and I got it stucked in a boot loop while trying to install a custom font after rooting it with no custom recovery tool installed. I downloaded the phone's stock firmware from needrom but discovered the firmware for gionee p3 on that site is corrupt as I couldn't extract the zip file to my desktop. I downloaded a custom rom and after flashing it using SP flash tool, my phone won't even boot anymore, the phone just remains dead like there's no battery in it. But when I connect to sp flash tool, it recognises my phone so I think its a firmware issue or a problem with the bootloader. I want to know if its possible to copy the firmware from a working gionee p3 and use it to flash my bricked phone, if it is, please I need guide on how to do this cos I really want my phone back to its stock rom. If not, any other solution will be much appreciated. I need my phone up and running again please help.

As you mentioned, the ROM you downloaded earlier might be corrupted. Since flash tool recognizes your phone, i think you should try to download a new firmware and try to flash it via flash tool.

Imhuurd said:
As you mentioned, the ROM you downloaded earlier might be corrupted. Since flash tool recognizes your phone, i think you should try to download a new firmware and try to flash it via flash tool.
Click to expand...
Click to collapse
Thats my problem, i cant find the firmware anywere else as every other site still links me to the same file i downloaded earlier which is corrupt. That is why i want to know if its possible to copy the firmware from a working phone and use it to flash the dead phone or if i can be taught how tocreate a scatter file for one of the custom roms i have, i'l be grateful. Getting the firmware is my biggest problem. Thanks for your time and help.

LG G2 D801 Brick w/ Download mode, No recovery, No Boot, Simple Rom V1.1

The phone: LG G2 D801 TMo
Rom: Simple Rom V1.1
Android: 5.0.1
Problem:
I cross loaded a D802 Rom onto my D801 and bricked it into Fastboot mode.
I was able to get it into Download mode but now I'm stuck.
I can't Revert from 5.0.1 to 4.4.2 through a .TOT or .KDZ flash. The phone is reading that its a D802 and it's not...
I've spent the better part of 18 hours trying to fix this now by scowering the forums with no luck.
What do I do, I'm not trying to get a new phone right now and because it's in download mode I feel like there's hope.
The flashes keep failing. TOT fails because it says i'm trying to flash D801 on a D802 and a KDZ flash fails at 3% with a disconnect and no reconnection.
Any help is appreciated.

What driver and OS are you using? I keep getting a getting Android device in Windows and no recognizable device connection for anything across all tools.

deadsky671 said:
The phone: LG G2 D801 TMo
Rom: Simple Rom V1.1
Android: 5.0.1
Problem:
I cross loaded a D802 Rom onto my D801 and bricked it into Fastboot mode.
Any help is appreciated.
Click to expand...
Click to collapse
I did the same thing but I can't get into fastboot. Nothing has helped me either.
If you can get into fastboot, flash aboot, boot, laf and recovery for the d801 and you should be able to then install using a kdz file

I had the same problem but finally got it back following this guide:
http://forum.xda-developers.com/showthread.php?t=2432476
Use the tot method and I had to use the alternate DLL.

Problems with twrp

Hello there i am currently having problems with twrp. I am unable to flash anything through it. Everytime i go to flash something it resets itself, i dont know what to do. I am running v10j that i used from a kdz if that helps.

pumkinhead13 said:
Hello there i am currently having problems with twrp. I am unable to flash anything through it. Everytime i go to flash something it resets itself, i dont know what to do. I am running v10j that i used from a kdz if that helps.
Click to expand...
Click to collapse
I don't know which TWRP you are using but either one of this 2 should work:
- Click Here and download as follow:
1- IF YOUR device came with v10j out-of-the-box YOU most flash v10j TWRP (why? B'cuz your device probably have the new hardware rev. And v10j TWRP is for that)
2- IF YOUR Device didn't come with v10j you CAN flash either TWRP v10i or v10j
Try that and report back

help with security error bootloop bootloader

hello i have lg flex 2 sprint it was on 5.0.1 ZV4 i just tried to root it by flash ZV6 root system through dd command
after flash the rootsystem image the phone reboot to lg logo with security error then it go down and black screen i still can enter download mode..
please any body can help me to restore stock rom maybe im on zv6 rooted system

I've never even heard of a ZV4 for the Flex 2, I thought we started with ZV5 originally when the phone was released in mid-2015, guess I just missed that one entirely if it does exist.
If you can enter download mode (you said you can) then I strongly suggest you flash the ZV8 TOT file found in the link provided in this instructional post:
http://forum.xda-developers.com/g-flex2/general/guide-lg-g-flex-2-stock-firmware-to-t3037593
Since we don't have a KDZ or TOT for ZV9 or even the latest ZVB firmware you have to flash those manually (not using the LG Flash Tool but the Send_Command.exe thing along with dd while the system img file is on the internal storage of the device.
I guess my one question would be: why haven't you updated when new firmware has become available, or did you just get this Flex 2 recently and it had ZV4 on it and you just never bothered.
If you do this right you can get everything working in under 30 minutes, and have even rooted ZVB ready to go (there's a rooted ZVB system img available now too, search the threads and you'll find the link to download it).
Be careful, read all the instructions, take your time, and good luck.

thank you very much for your help but I want tell you that I cant get the storage because the phone cant startup it just bootloop on security error so I cant put anything on the storage how I can transfer the file to storage
or can I flash it through lg flash tool?

I bought this phone from ebay and it come with zv4 I think who has it didn't do any updates