Revert back to Stock - LG Optimus 2x

How can I revert my LG 2X back to stock? Currently running CM10 with the new bootloader. I have found multiple threads about this but I'm afraid to brick my phone because there all outdated.
Can someone provide me with a step-by-step guide thats more up-to-date?
Thanks very much.

Well you won't get that kind of guide, cuz only small part of users still using p990 (my guess) got back to stock, so all the guides are a bit outdated but shouldn't brick your device. Saying it short, use the old guides
Sent from my LG-P990

Easy method:
Use smartflash to install an old baseband like 20S. Then use LG update tool to flash the latest stock for your region. Alternate, use AIO tool to flash both baseband and stock. You will need to download .kdz file and extract it to fls and bin file in AIO tool prior to flashing. Fls are baseband and bin are the rom

Related

Possible way of getting ROOT + 4G (HSDPA) speed for p925 (rogers or at-t)

Hello everyone, I know post are existing in the development section for this but I think I may have a way to get 4G speed on p925(g) (rogers optimus 3d and at-t lg thrill) combined with root.
EDIT #2: If kdz flashing worked for you but isn't working anymore for no reason, please read this before asking : http://forum.xda-developers.com/showthread.php?p=22023493&posted=1#post22023493 lg effers blocked the acess to kdz flashing since their last version updater
I'm not a pro Dev but mods will be happy, before posting I READ and try to post something usefull.
As I was searching a way to get a better bb for my rogers optimus 3d I found many interesting things but all were uncomplete.
1. The LG Optimus 3d seems to simply be a LG thrill (don't be fooled by the G in P925G it seems many ppl are just ommiting the G to do shorter)
2. This post : forum.xda- developers.com/showthread.php?t=1449021
(pull off the two spaces after xda-)
Showed me that there was a working stock gingerbread ROM from Brazil that is having the right frequencies to give 4G on rogers (tested by myself and it's a GO!) and on at-t.
The only problem with this rom is that currently There seems to be no way to root it (not even the latest superoneclick 2.3.3 can do it).
So basically it's not that bad because you've got the choice of getting STOCK GINGERBREAD WITH 4G SPEED ON P925 by flashing v20a kdz (follow first link)
But many of us want to get further. ROOT + 4G is almost a requirement for a phoen to be respected according to me and many other.
So acording to the post there is 4 THEORETICAL ways to get root + 4G on a p925
1. Follow the instruction in the post, and if you're one of the lucky bast**ds for who the second kdz installation doesn't push the european bb well you're good to go but even after 5 times repeating the process the bb was always getting flashed.
2. Get the superoneclick guys craking, so we can get Root access on the brazilian ROM
3. Get who knows who cracking the brazilian or european kdz file to isolate the bb (from brazilian) or the ROM (from european) and then flash them in the according order to get a rootable ROM + the brazilian bb together (we know they are compatible since bast**ds from #1 are still getting data).
4. Install only the ROM from someone who would post an european .bin (without bb) of v21a to be installed over the full brazilian kdz.
So basically i'm widening the call for this .bin file search but I think there might be another way!!!!
I've seen phones reacting different ways when combining a froyo baseband on a gingerbread ROM.
a. the phone bootloops
b. there is no signal but phone boots fine
So basically if the p925 is doig b. it would be possible at the place of searching a v21a bin (that seems hard to find) flash a rootable froyo bin . So I'd like to know if any of you still have one of the rootable bin that were found in this post : forum.xda- developers.com/showthread.php?t=1246678
I would have already tried for myself but since megaupload closed fileserve does not support share anymore....
So if someone could provide me with
a. one of the rootable .bin file in this post :
forum.xda- developers.com/showthread.php?t=1246678
and I'll tell ya if it's a WIN or if we have to get back craking!!!
b. Tell me if this workaround fits:
1. Flash V20a brazil kdz (found here forum.xda- developers.com/showthread.php?t=1449021
2. Flash a rootable froyo .bin using this method
forum.xda- developers.com/showthread.php?t=1244490
3. Root the froyo ROM
4. Install CWM
5. Flash a gingerbread rom made for p920 NOT FOR p925
6. TELL US THE RESULT!!!
BE SURE TO KNOW WHAT YOU ARE DOING BEFORE FLASHING KDZ AND BIN FILES... I'M NOT RESPOSIBLE FOR ANYTHING HAPPENING TO YOUR PHONE. BUT IF AS ME YOU GOOGLE AND READ YOU'LL PRETTY MUCH ALWAYS FIND A WAY TO UNBRICK... DON'T ASK I WON'T DO THE GOOGLE FOR UNBRICKING YOU!!!
so I know it's a long post but.. I prefered to go into details and expose my point right with all the sources article
Good luck to all and KEEP ON CRAKING!!!
the guy who google for hours before posting
bapkssist
Ill see if i still have the rootable .bin froyo tonight when i get a chance if you wanna do that nd let me know how it goes cuz im curious
Thrill 4g on O3D
Thanks in advance, I can't wait to see if I get there rooted gingerbread with proper radio.... It's been a looooong wait.
If someone could repost the bin I would try it.
https://rapidshare.com/files/3124156028/BIN_LGP925AT-00-V10e-310-410-AUG-10-2011_0.ZIP
---------- Post added at 04:48 PM ---------- Previous post was at 04:47 PM ----------
try that out its the thrill froyo bin
Does not work. It still restores the froyo baseband. If you delete the baseband from the folder the flashtool won't work at all.
I don't think that's going to happen yet
Sent from my PG86100 using XDA App
You can flash just the .bin file i thought
Thrill 4g on O3D
I couldn't it just kept saying error in the lgflashtool. With the fls and bin in the same folder it flashed but replaced the radio in the process.
Hmm i wish i had time to get on the comp and try this on mine right now
Thrill 4g on O3D
jznomoney said:
I couldn't it just kept saying error in the lgflashtool. With the fls and bin in the same folder it flashed but replaced the radio in the process.
Click to expand...
Click to collapse
I'm going to try it when I get home, and i'm going also to try with a blank .fls file just to see if it flashes nothing.
Don't know if it's my windows 7 environment but i'm getting some trouble even before the software trying to flash... I enter the .dll file then the .bin without the .fls and when I click ok the program automatically crashes... Any idea what it could be so that I can try to flash the froyo bin over my v20a baseband?
Are you running as admin?
Thrill 4g on O3D
doahhh thanks very much trying this right nao!
No... didn't do anything... I'm getting a local environment error... :-(
Try rebooting comp and do it
Thrill 4g on O3D
I reebooted many times, but have you tried the method for yourself??
ooops just found the problem.. I was using a wrong dll it was crashing the app sorry guys
Going to try the method right after a good nand backup
No i havent had time been busy working i only get on here on my breaks
Thrill 4g on O3D
Now that I managed to repair my LGFlash tool.. it's my kdz utility that seems broken.... when in R&D test tool I follow instructions.. after clicking normal web upgrade test and upgrade start. At the place of getting the clear registery country choosing and everything.. I get only Lg updater to open and tell me my firmware is already up to date.. Any solution to this so I can FINALLY test my method...
b.charles.gagne said:
Now that I managed to repair my LGFlash tool.. it's my kdz utility that seems broken.... when in R&D test tool I follow instructions.. after clicking normal web upgrade test and upgrade start. At the place of getting the clear registery country choosing and everything.. I get only Lg updater to open and tell me my firmware is already up to date.. Any solution to this so I can FINALLY test my method...
Click to expand...
Click to collapse
LG closed that so we can't do it anymore.
OMG.... A chance I'm already on a rooted rom.. They are truly making us struggle to get good roms on this phone.. an again we are pretty much screwed to get the right baseband on our phone... If anyone finds a tutorial or anything to do so.. HELP!!

[Q] How to flash back to stock rom and unroot my P970?

Dear All brother
I just want to flash back to stock rom and unroot my P970 like initial status. Is there any tools or method to do so?
It's very simple, just follow the Tutorial: LG P970 (P970H) unbrick/flash using SmartFlash Tool and install whatever version of firmware you had initially, you can find V10 firmwares on the Firmwares LG P970, P970H thread.
If you want to get to the official V20 firmware, just upgrade your phone using the LG program (the one that came on the CD with your phone).
This way you'll have an "official ROM" on your phone and it won't be rooted either (it's just like it came "from factory").
Btw, you'll loose the root and the recovery functionality, but i think that's what you wanted in the first place
EDIT : replaced Samsung with LG, i was reading up on modifying my Samsung Spica and somehow mixed up the postings
verszipo said:
It's very simple, just follow the Tutorial: LG P970 (P970H) unbrick/flash using SmartFlash Tool and install whatever version of firmware you had initially, you can find V10 firmwares on the Firmwares LG P970, P970H thread.
If you want to get to the official V20 firmware, just upgrade your phone using the samsung program (the one that came on the CD with your phone).
This way you'll have an "official ROM" on your phone and it won't be rooted either (it's just like it came "from factory").
Btw, you'll loose the root and the recovery functionality, but i think that's what you wanted in the first place
Click to expand...
Click to collapse
Samsung??? LG????:what::banghead:
Samsing is getting into the heads of people it seems...
Anyways he is right flash your stock fw with smartflash
Sent from my LG-P970 using XDA
Thanks all!!!

[Q]Reverting OB back to Stock Firmwire

Hello there, I have some issues with the speaker in my OB, so I need to send it to LG for repairs. My Question is how can I completely revert my OB to Stock (Unroot, Stock Firmwire and removal CWM)
Regards
EDIT: I checked in the The Big N00B how-to! Thread and this referred me to the R&D Test Tool, but they sugest the SMARTFLASHTOOL because those issues with B2C.
So my question is rather, what is the best way to unroot my device so LG has no clue that it has been rooted at the moment?
acidr4in said:
Hello there, I have some issues with the speaker in my OB, so I need to send it to LG for repairs. My Question is how can I completely revert my OB to Stock (Unroot, Stock Firmwire and removal CWM)
Regards
EDIT: I checked in the The Big N00B how-to! Thread and this referred me to the R&D Test Tool, but they sugest the SMARTFLASHTOOL because those issues with B2C.
So my question is rather, what is the best way to unroot my device so LG has no clue that it has been rooted at the moment?
Click to expand...
Click to collapse
smartflash and lge extract tool.
ty, what does the lge extract tool do?
And is there anywhere a tutorial?
acidr4in said:
ty, what does the lge extract tool do?
And is there anywhere a tutorial?
Click to expand...
Click to collapse
lge extract tools gets your bin an fls files from a kdw file so you can flash your phone thru smartflash.
thank you

[Q] Flashing KDZ on p990hn Problem

I have a p990hn which I am trying to flash back to the stock v25H kdz from Fido(Canada).
I have been following the instructions located here: http://forum.xda-developers.com/showthread.php?t=1264289
but still no luck. It seems to stop flashing halfway through and does nothing for 10 minutes or more.
The flashing seems to have gone as far as to overwrite CWM.
The logs from the KDZ software updater can be seen here: http://freetexthost.com/scll2sawf6
Any help would be appreciated. Thank you.
Edit: Got it to work by using NVflash to revert to V10b then upgrade to V25H using the UpTestEX_mod2_marwin.exe and LGTools. KDZ files just would not go. General instructions can be found here: http://www.lg-phones.org/how-to-flash-lg-optimus-2x-to-android-2-3-4-gingerbread.html and the later part of this post: http://forum.xda-developers.com/showthread.php?t=1287236 (there is a thread for these exact method in the o2x forums but I was too tired to find it, rest assured, it worked for me.)

[Q] noob guide / back to stock

Background :
I have owned motorola/samsung/htc devices so far. I got ATT thrill real cheap on craiglist. It had cwm 6.0.1.9 and data/cache/systems were wiped.
What I did :
I flashed cm7 for P920. everything worked but baseband imei would not show up then I flashed cm10 nightly. baseband showed up (v20p) but still no imei.
I looked into forum for thrill and optimus 3d and found various thread on this subject. reading those this is what I understood. There are few threads on flashing back to stock ( resurrection thread was recommended) there are few threads on process of bringing back imei. I tried resurrection thread but omap driver would not install on vista 64 for me. I am going to try vista 32 or windows 8 64.
What I need:
I believe resurrection guide it the right way to go. (I want confirmation on this)
I want to go back to ATT stock with working imei and baseband. (or any other stock stable you suggest)
Understand basic functions, tutorial about this phone (wiki / noob thread/all things thread)
I came across term kdz (is that similar to flashable odin file on samsung?) and want to learn working of lg flashtool want to understand why there is a separate omap flash tool.
I also noticed that baseband are part of v20(number)p(letter) files (probably stock) files. Are there any cwm flashable baseband files?
This thread will return you to stock. Just follow its "LG Tool" guide. http://forum.xda-developers.com/showthread.php?t=1491870
Sent from my LG-P925 using xda app-developers app

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