yashsingh1/xdaforums huggingface dataset:
[LG Optimus L90] tetrismonkey:
D41510E to D41510C

Hello I just got this phone from T mobile It came with D41510E out of the box I have tried a few different root guides and none seem to work I read in another post http://xdaforums.com/lg-l90/help/root-methods-d415-arent-t2991925 that this guide can downgrade my phone to D41510c and then i can root the phone using TowelRoot... has anyone tried this? I am willing to try however when i put the phone in Firmware upgrade mode i only get the LGE Mobile USB Modem I don't get the LGE Mobile Composite USB Device

[IMG="Missing LGE Mobile Composite USB Device"]http://i20.photobucket.com/albums/b246/mortalembers/android/LGL90modemnousbhub_zpsa521ca35.jpg[/IMG]

not sure if i should run the LG Flash Tool

also When in Firmware update mode i see Rooted in red letter i don't know what that means because i am not rooted i even ran root checker and no root

[IMG="Rooted?"]http://i20.photobucket.com/albums/b246/mortalembers/android/IMG_20150114_152411_zpsdd4cc209.jpg[/IMG]

can anyone help me understand what i can do to get this phone rooted

Thank you
[LG Optimus L90] Nicole-28:
From my experience you should be fine but check in "Ports (COM & LPT)" There should be another AndroidNet device connected to it... from what I could tell this was the important device, also check with the LG Mobile Support Tool, if it can detect your phone and tell you the current Firmware version on it then the drivers are properly installed!

As for the Firmware Update mode showing rooted in red, it does not actually do a proper root check from what I can tell, it only looks for certain files associated with root, so if you've tried some methods to get root the files they left behind will make it show ROOT in red even tho in reality you have no root access.

Go ahead and run the LG Flash Tool, worst case scenario is that it wont detect your phone and wont flash.
[LG Optimus L90] james_fuster:
iam trying to flash when it gets to 15 % it stops and give this message

i have twrp custom recovery and cyanogen mod 11 rom
[LG Optimus L90] james_fuster:
thank you so much problem solved i had to restart phone into firmware upgrade mode
[LG Optimus L90] tetrismonkey:
Thank you for the help i Ran it just to see if it would work and everything worked great. I got a little worried the first time because i get some error on the Flashing tool saying it could not connect to the server and if asked if i wanted to cancel the job. I clicked ok and looked down at the phone and saw that the flashing had started but was now stuck at 8% after a min or so I pulled the battery and tried rebooting the phone. It went straight Upgrade mode and I was a little worried that it would be stuck in that mode. I ran the Flash tool again and got the same massage but this time i did not click ok and when i looked down at the phone it was still updating so i let it finish and and it rebooted and now I have 510c so thanks for all the help now to see about getting it rooted. :D
[LG Optimus L90] capnmorgan80:
B2Capp

Every time i start b2capp i just get a message that says it needs internet access. I ran the program as administrator and my internet runs fine. Does this mean something is wrong with my download or something else. I have already used this method in the past for my LG Optimus 3D, does this mean that i already have the needed usb drivers? I checked device manager and I'm pretty sure that everything needed showed up. If so, should i go ahead with the lg mobile tool, or try to manually find and download the specific drivers for my phone?

LG L90 TMO Wal-Mart Family Plan D41510e

Also, i am running Windows Vista
[LG Optimus L90] fmasoud:
B2C App Setup???

In step 4 where can I find the B2C App Setup file? I cant find it. Please help me.
[LG Optimus L90] capnmorgan80:
I believe its been renamed LGUserCSTool.exe
[LG Optimus L90] olinojephanko:
find your phone on official lg site, go to product support-> software update-> and its usually step 2 LG MOBILE SUPPORT TOOL
[LG Optimus L90] mike2298:
Is it possible to relock the bootloader on the L90 D415 T-Mobile? TY in advance

Edit---

Lol just read title, I'm stupid, ty
[LG Optimus L90] Viggen66:
Delete
[LG Optimus L90] vicksz:
Please help, I want return to stock with offline flashing

Now i'm on CM 11, and I want to return to stock again. I follow step by step on the OP, but I can't get LG Firmware Upgrade screen (Pressing Vol Up and Connect to PC)

Can someone help step to return to stock with previous on cm 11 ?
[LG Optimus L90] IcipherPT:
Same issue here, can someone give us a little help? :)
[LG Optimus L90] james_fuster:
after 15% on flashing you get message that the phone is disconnected

remove the cable and shutdown the phone

press volume up and keep it and put the cable back to phone you will be in upgrade mode in few seconds

now press on computer retry

it happened to me b4 and i kept trying untill it worked its just annoying bcz you are afraid to lose the phone

---------- Post added at 08:55 PM ---------- Previous post was at 08:52 PM ----------

if you flash stock kdz bootloader is relocked and you lose root
[LG Optimus L90] jaknot:
hi IcipherPT & vicksz ,

do you already test the solution from james_fuster ?
[LG Optimus L90] IcipherPT:
Not yet, phone is not mine :\
[LG Optimus L90] luv.niraj16:
Help Me

i already using my phone d410 with CM 11........& i want to back my phone as lg firware (completely orginal)...

is that possible or not please help me sir please....?????:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(:(

---------- Post added at 01:24 PM ---------- Previous post was at 01:19 PM ----------

me also........anybody please help us......
[LG Optimus L90] el_rolas:
Nice Tutorial I accidentaly deleted a lot of system apps like contacts a LG backup and after this tuto everything works perfect.

LG L90 D400hn Telcel Stock Rom
[LG Optimus L90] kisoon:
New T-mobile L90 need help down grade from 10e to 10c

I have a L90 D415 from t-mobile. I am trying to down grade from 10e to 10c to get root.

When I install the USB drivers, in device manger I see

in modems: "LGE Android NETUSB Modem"

and in Ports and com I have "LG Serial Port Com 11".

Not sure if it made a difference.

Then I flash phone in firmware update mode, and the flash tool stop during half of the reading phone information process. Then it states that some error has cause flash tool to stop. A problem cause the program to working correctly . Window will stop the program and notify you...

Can anyone help?
[LG Optimus L90] kisoon:
Did you ever get your problem solve? I am in the same boat trying to down grade to 10c from 10e. The problem I am having is that in USB shows differently than OP. My phone shows up in ports as LG androidNET serial port

and in modem.

Also when in flash tool when reading phone, the program crashes.

Any suggestions?

[/COLOR]I guess I am answering my own question. If you are tying to root tmobile d415 10e by down grading to 10c. Follow the OP instructions, but when using the flash tool, when it tells you to click the read phone button. Skip that step and just push start. Also make sure your KDZ is in the same folder as the flash tool.
[LG Optimus L90] amy1997:
How to Root lg l90 D410

can you please teach me :confused:
[LG Optimus L90] Revivability:
Drivers cannot be installed, what do I do?

I desperately want my phone to be rooted again, but I am held up at literally only one thing. It's exceptionally awesome because I can't see how this is my fault since it is only specific to one part of this program. When I select "LGD415RD" it doesn't download any drivers, and is perfectly fine with sitting there doing nothing for an eternity. Every other device that I select will download the drivers fine. This seems to be a problem with the LG Mobile software tool only. Example: Nevermind can't post links.

How do I fix this, or where do I get the drivers? It's increasingly frustrating.
[LG Optimus L90] tetrismonkey:
yes mine is running pacman ROM now and runs great hope you get it worked out not sure if I can be much help
[LG Optimus L90] BigShwag:
I have tried all sorts of drivers, none seem to work, including the obvious ones (LG Driver, Universal ADB Driver). I can get it recognized in CM11, but in download mode the only device I see is "Fastboot interface (Google USB ID)". My phone hasn't worked in two days and I am increasingly becoming hopeless. :(
[LG Optimus L90] racenrich:
Just a heads up to say this restore method works well! I've done it twice now with 2 of 2 successful.

Both CM11 and PAC seems to have to many reboots, hiccups and a couple other odds and ends to be a daily driver for me.

So back to stock, towelrooted and SuperU...thanks for the awesome how to!

Rich K.
[LG Optimus L90] BigShwag:
Yes, I am in the same boat. Do you have the D415? Skeptical as to whether or not that matters, but misery loves its company I guess... Did you figure it out by the way?
[LG Optimus L90] Warimation:
I believe in Windows 8/8.1 drivers dont work

Enviado do meu LG-D405n através de Tapatalk
[LG Optimus L90] shinobisoft:
You are correct.
[LG Optimus L90] Suicide_Machine:
Thanks for this. I used this guide with some others to root the D415 with no problems. Install the old KDZ, used flashify to install TWRP, boot into recovery, wipe Dalvik/caches, install rom, wipe again and boot.
[LG Optimus L90] BigShwag:
Thank you both for the confirmation. I was starting to think that was the issue! I'll just use a school computer to do the deed lol. Just got a Nexus 4 for my main phone, but will keep an eye on your progress for the sake of my L90! Thanks for all of your work so far, and for persevering in the future if you so choose!
[LG Optimus L90] Beast90909:
L90 United States

Has anyone tried this on the D415 version of this phone?

Also do you need to activate USB debugging before you start?

Thanks
[LG Optimus L90] locki:
I have problem to have correctly running drivers for MTP ... i already tried everything but not success
[LG Optimus L90] gorankx:
any idea how to install custom recovery ?
[LG Optimus L90] radioactive_guy:
Cant flash

I tried everything but still the flasing tool doesnt detect my phone when asked to re connect my phone plese help btw i m using win 8

---------- Post added at 01:26 AM ---------- Previous post was at 01:08 AM ----------

i cant connect on my win 8 pc whenever it asks to reconnect during flashing it doesnt detect my phone please help
[LG Optimus L90] gorankx:
thats probably because w8, try w7
[LG Optimus L90] gdjindal:
First of all buddy no need to quote the whole post. Please remove it,

I have used this tool and flashed kdz around 50 times with XP, Win 7, Win 8, Win 8.1 and also with Win10 (Tech. Prev.) with No issues. So follow these tips:-

If you are unable to find devices in device manager as shown in screenshot, that means device drivers are not properly installed.

Reason for missing devices in device manager could be faulty USB Data cable or faulty USB Port on PC, For faulty USB Cable try another USB Cable and always use LG Original Data Cable and if you are using any USB Hub or USB Extension please remove it. Phone should be directly connected with PC with USB Cable only. If still not working then try with another PC.

LGE Mobile USB Modem and LGE Mobile USB Composite Device are very important in Device manager to successfully flash fdz
[LG Optimus L90] roosxter:
Does anyone have a mirror to the 10c kdz, i cant get any to download. Im on 10e and cant root, pls help
[LG Optimus L90] pick.orion:
[MENTION=4646325]gdjindal[/MENTION]

Hi, I followed the instructions on your post and went through entire thread but I cannot seem to resolve my problem. When the flashing tool asks to connect USB again, by pressing retry doesn't work. I cannot go into software upgrade mode on my phone. Pressing VolumeUp button and then connecting the USB doesn't work for me. Also, when I boot my phone without anything attached, it says secure booting error. Do you have any idea to resolve this issue? Apparently, I accepted the OTA update without locking and unrooting the phone. Please help. Thank you.
[LG Optimus L90] radioactive_guy:
Same here

Same problem here please help me too my pc doent recognise my device
[LG Optimus L90] polist:
Which windows version do you have?
[LG Optimus L90] radioactive_guy:
I tried it on both wi 7 and win 8
[LG Optimus L90] kprsnt:
download drivers and install latest from lg site..

http://www.lg.com/in/support-mobile/lg-LGD410

this may solve ur problem,,.

I had the same when i updated to lollipop..
[LG Optimus L90] polist:
From where have you downloaded lollipop?
[LG Optimus L90] radioactive_guy:
It was official OTA update from LG
[LG Optimus L90] radioactive_guy:
No response

The drivers dont work Still i have the same problem
[LG Optimus L90] johntrela:
This tutorial is not working for me i installed drivers on three different pcs and nothing usb driver is not installed... only modem and COM .

is there any outher way to flash stock rom via ADB or anything else??? plz help me!!
[LG Optimus L90] NetDog75:
Hello,

Enough to me from Android 5.... :rolleyes:

I downgraded my D410 back to 4.4.2. This is OK, and usefull... however, I know, have better version, the 4.4.4.

Where can I download the offcial kdz? (4.4.4 of course. )

Somebody can help me?

Thanks
[LG Optimus L90] gorankx:
there is no oficial version .4.4.4 however there are custom ROM-s CMW 11 and CMW 12 as well ome tohers, BTW I'm also thinking going back from LP because no custom recovery and no xposed working.
[LG Optimus L90] lordnihilusmd:
Can't enter software update Mode

I have the latest LG L90 drivers but the phone doesn't enter in software update mode , the only thing that i get is download mode.

How to enter software update mode ???

p.s. i'm on stock rooted 4.4.2 with unlocked bootloader and TWRP

update: i've figured this cr@p out ... To be able to enter in SW Upgrade mode you need laf.img for d415 and when in download mode, just type: fastboot flash laf laf.img
[LG Optimus L90] xanscorp:
No idea why, but for some reason the LG Flash Tool doesn't work anymore. Worked when I downgraded to 10c to root the phone, but now I have the Lollipop kdz file that I want to flash. The LG Flash Tool never gets beyond 15% though. And for some dumbass reason, my system doesn't show the LG listing in USB Controllers, only in modems.

I've tried different ports and different cables. Even using the same drivers I used to root, it isn't working, and it's just pissing me off. Any help would be appreciated, before I start kicking the crap out of everything and everyone I encounter.
[LG Optimus L90] Solenz:
I'm trying to flash the D415 Lolipop KDZ via LG Flash Tool but after flashing, the phone won't go past the T-Mobile screen. Help pls.
[LG Optimus L90] Daisuke1988:
anyway you could provide that laf.img? i seem to have lost mine.i too have the d415 on stock 4.4.2
[LG Optimus L90] lfom:
This thread links to a file that has laf.img for D415:

http://xdaforums.com/lg-l90/general/guide-fastboot-l90-d415-t2827825

Hope this helps...
[LG Optimus L90] xanscorp:
If you have your laf.img still you can use Rashr or Flashify to flash the stock bootloader to enter Download mode and flash the kdz with LG Flash Tool. It removes root, but there is a method to root that works on Lollipop. I'll update with the link in a bit... Here it is:

http://xdaforums.com/showthread.php?t=3072568
[LG Optimus L90] shinobisoft:
Check this thread

for laf.img.

My LG L90 Utilities can also be used to restore the laf partition image. ;)
[LG Optimus L90] BLiapis:
Hi, im trying to install the drivers for my LG device but it fails.

I downloaded the B2CAppSetup.exe which installed some kind of PC suite software (that only installs USB drivers?) and when i try to locate my phone model, its just not there on the list.

The phone is not recognized in Windows8.1, although i have a working debugging USB drivers for the Sony phones that i frequently update with new firmwares.

Any ideas? Thanx .-
[LG Optimus L90] xanscorp:
Try using the. LG Mobile United drivers. They are recently updated. http://www.xanscorp.com/lg-optimus-files
[LG Optimus L90] TMG1961:
I keep getting the message the phone is disconnected from the pc. I can click on retry a million times but it just keeps saying the same.

I am using a lg g2 mini

Running linux and using all in wine
[LG Optimus L90] xanscorp:
With what program...or is this in shell terminal...also is the phone on normally, or in Download mode?
[LG Optimus L90] TMG1961:
I used wine in linux, but yesterday i installed windows 7 in virtualbox. But even there with the drivers installed the phone isnt detected.

The phone is in download mode. I still have a working G2, but at the moment i am too scared to even get close to custom mod or rooting with that one.
[LG Optimus L90] xanscorp:
If you're using Linux, especially Ubuntu, you just need the repositories. See the following page...http://lifehacker.com/the-easiest-way-to-install-androids-adb-and-fastboot-to-1586992378.

Personally I prefer Linux to Windows myself.
[LG Optimus L90] TMG1961:
I already had that done. The problem is that when i hoop up the phone it isnt detected by either adb or fastboot.

So far i tried about everything i found online but up till now no luck
[LG Optimus L90] shinobisoft:
Do you also have the appropriate file in rules.d ? I'm drawing a blank at the moment as to the exact path of the file along with it's name... LOL

EDIT:

51-android.rules needs to be placed in /etc/udev/rules.d. This requires root permissions. Attached please find my working copy of 51-android.rules.

sudo gedit /etc/udev/rules.d/51-android.rules

Paste the contents of my 51-android.rules.txt to the file that was created by gedit from the command above and then save and reboot
[LG Optimus L90] TMG1961:
Done that and rebooted. But when i plug phone into usb i get 9 volumes on my desktop. The phone itself stays dead, just a black screen.
[LG Optimus L90] shinobisoft:
I'm not sure if my screen turns on when I attach it to my PC. Not sure about the 9 volumes either. I only get 2 devices...
[LG Optimus L90] TMG1961:
I think i really messed up the poor phone.
[LG Optimus L90] shinobisoft:
Lol. I hope not...
[LG Optimus L90] MicroMod777:
I flashed the LP kdz but my wife likes the KK better. Can I flash the KK kdz without loosing data?
[LG Optimus L90] shinobisoft:
No. All kdz flashes update/modify every partition
[LG Optimus L90] xantanion:
Offline flashed from 4.4 to 5.0.2 with keeping my data. Kdz offline method
[LG Optimus L90] epicelite:
When I type in my IMEI (quadruple checked for errors) it just loads a blank page with a "Back to Home" link and no download ever appears. I have turned off add blocker.

What do?

PS: Will towelroot work on 5.0 or what do I re-root it with?
[LG Optimus L90] TheHeretic666:
problems

Hello, I did what you told and cant install, I included 2 pictures.

Phone: l90 d405
[LG Optimus L90] Warimation:
I followed his steps on win8.1 and worked.. D405n variant

Enviado do meu LG-D405 através de Tapatalk

---------- Post added at 01:06 AM ---------- Previous post was at 12:59 AM ----------

Go to l90 stock lollipop thread, there are several kdz links to download..

Don't know if towelroot works, I used a 1click root found in l90 forum and worked good..

Enviado do meu LG-D405 através de Tapatalk

Edit:

For kdz files

http://xdaforums.com/showthread.php?t=3047754

To root and other stuff..

http://xdaforums.com/showthread.php?t=3084987
[LG Optimus L90] mrufka81:
want my kitkat back

I would have a go and root my LG L90 but... After I typed my IMEI I realized it will be Lollipop root... Do you have any idea how to go back to KitKat? Hard reset to factory didnt help, it gives me Android 5.0 strai away. Upgrading my phone to it was the biggest mistake... I want my kitkat back :( Please help!
[LG Optimus L90] gorankx:
You have to flash KK kdz file to go back to KK although i don't know why would you want to go back.
[LG Optimus L90] H84:
where do you find kk kdz files ??
[LG Optimus L90] dobrun.franjo:
:)

flashed stock lollipop on my d405n and everything went fine!

the i rooted with DP TOOLS and again everything is ok.

then i installed busybox and trickster mod and something interesting...... the default min cpu freq is set to 787200 and i wanna know why!

i set it to 300000 to 1190400 as it was in kit kat but settings dont stick (when i press home and then go back to app it reverts to stock freq

is this something lollipop specific or is it a bad flash or smthng

??
[LG Optimus L90] Edvinoske:
This happens every time!

http://i.imgur.com/tGdwamb.png
[LG Optimus L90] CompMaestros:
lg firmware rom link not working for me. Any other link?
[LG Optimus L90] xanscorp:
What's your exact model number?

---------- Post added at 09:27 AM ---------- Previous post was at 08:59 AM ----------

Seems like updates are needed. What other programs do you have would would contribute to the MSVCR100.dll module? (Visual Studio, Word, any Microsoft suites, basically.

It may also be where the program is installed to. (For some, the module has issues reading based on its installed location for some stupid reason. OSX from what I read occasionally has/had this problem). Where are you running the LGTools program from; desktop folder, Program Files, etc..
[LG Optimus L90] RodrigoCunhaSilva:
Hello ,

I have a little problem, my cell phone caught in a way that does not turn over until it seems to be unloaded.

I need to reinstall the original aparlho Stock to return to normal, but I can not enter the recovery or download mode.

The computer recognizes the device but can not do the procedure to install the stock .

(I'm using Google translator , I'm sorry if you have not comprehensive )
[LG Optimus L90] mrufka81:
I dont like Lollipop. Mainly because it eats my battery even when all apps are off. I dont like the look of it as well but mainly the battery. It had a great life when I had KitKat, and it was what I loved my phone for. I used to charge every 3 days, now I must do it every single day. When I put my imei there isnt kitkat available, just the new android. If anyone has an idea how to help me I will be extremely grateful.
[LG Optimus L90] Edvinoske:
vs2013

office 2013

thats about it

its installed in C:/

d405n

No need for kdz as of now :)
[LG Optimus L90] sanads:
where is kitkat 4.4.4 firmware downlaod link d410 india??????
[LG Optimus L90] CompMaestros:
Firmware link is dead.

Please provide the working link.

I'm looking for L90 dual kitkat firmware for India.
[LG Optimus L90] ghostface:
D405n back to kk

Hi, flashing Lollipop (V20a) on my D405n works flawlessly, but when i want to downgrade to kitkat (V10b, but tried V10c also), it gets stuck on 4% on PC and error pops out....and the phone even doesn´t start to communicate (0% and nothing happens at all). Does anybody know why is that? Thanks in advance!
[LG Optimus L90] LivingOak:
If you specify which error pops out, we can help you better.

If your phone is still working , do hard factory reset first, then try to flash again.

You can also try reinstalling LG Drivers or even trying on another OS(Windwos 7/Windows 8.1).

Also don't forget to connect USB directly to the USB port on the motherboard(not front USB of your cabinet).

About the phone not communicating :

When you connect the phone in firmware mode, you should see something like 'LGE Mobile Composite USB Device' in device manager.

If it doesn't show, the LG software can't communicate with the phone. Check drivers again.
[LG Optimus L90] rustycz:
lg-phone-firmware.com

i've got the same problem, no matter what .kdz file im trying to flash (10a, 10b, 10c...) it gets stuck on 4% (tried hard reset before flashing)... it does say: "upgrade stopped due to an error"

Stock Lollipop works awfully on my phone (405n).
[LG Optimus L90] ghostface:
Thank you for the tips. As Rustycz says: "upgrade stopped due to an error". I don't know where the problem is, because flashing lollipop kdz works just fine. But flashing of kitkat doesn't even start on the phone.

Edit: OK, solved my problem. If anyone else got this problem. Win XP solved it for me..it is a well known problem and it can be done via virtualbox. I used win xp 32 bit SP 2 in virtualbox just for this purpose and it works.