yashsingh1/xdaforums huggingface dataset:
[LG Optimus 4X HD] Aeternus Eternus:
1. ANEUBK

2. P88020a-EUR-XXX

3. Lock

4. Don't know

Stock V20a JB, installed a few days ago.

What does this even mean...
[LG Optimus 4X HD] nedooo:
That you can unlock it if you want, but still you wil gain almost nothing since there is no actual use of unlocked bootloader, and since it is not unlocked for all manny will avoid 4X crippled by LG...
[LG Optimus 4X HD] emanoj.i9103:
1. AINDBK

2. Eur-XXX

3. Yes - Unlocked

4. IND black black

Edit: Seems First from India to unlock o4x... :)
[LG Optimus 4X HD] ronhoover88:
Really :p

Did India get open euro update officially?
[LG Optimus 4X HD] nedooo:
Wow didn't know India is in Europe now, maan those continents move fast :eek:
[LG Optimus 4X HD] Timbol.:
Hast du mit dem Service tool geupdatet?

Weil bei mir steht auch ich hätte die 10h :/ sorry for speaking german but i cant write this sentence in english.
[LG Optimus 4X HD] LamerDuck:
do you own the telekom branded version?

these are still on 10h
[LG Optimus 4X HD] @non4:
AGBRBK

234-000

No- Security error

GBR BLACK BLACK

Sent from my rooted P880
[LG Optimus 4X HD] laufersteppenwolf:
"did you update via service tool? 'cause mine says v10h, too"

;)
[LG Optimus 4X HD] nedooo:
Even LG thinks India is in Europe, such retards...now they dare to shi# about how unlock is for Open Euro market...nooo shi#!!!

They think we all are retards, a@@holes!!!
[LG Optimus 4X HD] tobixdev:
i think i have something in common.

I have a branded phone too just here in austria. I emailed LG if there is any way to unlock or how long the update needs. If you want can inform you about the response from LG
[LG Optimus 4X HD] Timbol.:
No, i own it at media markt.

Is it possible that 70% of the users in this thread are german? :D
[LG Optimus 4X HD] JOZA-SB:
1 AHUNBK

2 EUR-XXX

3 Yes unlocked

4 Black Black
[LG Optimus 4X HD] Agamemmnon:
I did a rollback to v10h, and try to update, but the Service Tool says there is no Update for me.

I have the ASWSBK 232-10 this is Switzerland, and for that there is still no Update.

I try to unlock my bootloader since 3 Days, absolut heavy, no luck!

Maybe it goes when the official Update for Switzerland is release.
[LG Optimus 4X HD] Newbleeto:
1. APRTBK

2. 268-01

3. Can't unlock, tried ALL the methods :\ Get unauthorized error

4. PRT BLACK BLACK

It's a vodafone branded phone. Hope someone finds a workarround, bought this phone yesterday and having a locked BL really bums me out!
[LG Optimus 4X HD] tobixdev:
@agemenonn(or so^^) i think we have the same problem.

I emailed LG today when we can expect the update for 232-10
[LG Optimus 4X HD] S.M-A-RT:
1. ANLDWH

2. EUR-XXX

3. Unlocked

4. NLD WHITE WHITE

5. Vodafone

:D
[LG Optimus 4X HD] gaviii:
1. APOLBK

2. EUR-XXX

3. Unlocked

4. POL BLACK BLACK

Before I had v10h, I dont know which version.
[LG Optimus 4X HD] DavidXanatos:
I also have a 232-10 it seams though i bought it in wienna austria from a big PC retail store (DiTech) so i guess its not a swiss only version
[LG Optimus 4X HD] Agamemmnon:
Yes, 232-10 is Austria and Switzerland, and there is unfortunately no Update:mad:

I send yesterday a Mail to LG Support and they told me they do not know when the Update comes for 232-10.
[LG Optimus 4X HD] DavidXanatos:
That sounds like a problem, I hope there will be an update as well as a unlock.
[LG Optimus 4X HD] tomkaehm:
Cay anyone help me?

1. ADEUBK

2. 262-000

3. no

4. DEU BLACK BLACK

5. Netzclub (O2)

I've charged my phone to 100%. Than i connected the phone with my pc. After that I typed "adb reboot-bootloader" in CMD.exe.

After that the phone has rebooted and the LG logo is showing. Than I typed "fastboot oem unlock".

Then I typed "unlock it" in the phone.

As I disconnected the phone CMD.exe showed that:

Than I had restarted the phone and in Hidden Menüs is written "Lock".

Can anyone help me?

Sorry for my english. Im German. :D
[LG Optimus 4X HD] laufersteppenwolf:
hmm, what about using the SEARCH?
[LG Optimus 4X HD] Timbol.:
A lot of people have this problem... Me too. Im from germany too ;)
[LG Optimus 4X HD] nedooo:
NOOBS read carefuly: adb reboot oem-unlock is enough for unlock (if LG lets you)...

There is also two step process that need fastboot drivers:

adb reboot bootloader...than if your phone is recognised as fastboot device (needs installed fastboot drivers) when it reboots to LG logo it is in fastboot mode and will responde to commands that starts with fastboot...now type fastboot oem unlock (no dash ;)) adn if retarded LG approved unlock for you chose unlock on phone...

Mistake made by NOOBS is that when you type adb reboot oem-unlock fastboot commands are pointless and unrecognised...
[LG Optimus 4X HD] Dadovvv:
After some problem with fastbood driver..finnaly gain status unlocked.

1.AHUNWH

2.EUR-XXX

3.yes

4.HUN WHITE WHITE
[LG Optimus 4X HD] LamerDuck:
you did everything right, its just that your phone is not allowed to unlock by LG and at the moment we dont know how to get around that:(
[LG Optimus 4X HD] LGaljo:
Probably unlockable! ASWSWH

Hello everybody. I come from Slovenia and am using ASWSWH version on official Jelly Bean Open Europe SW. It has been flashed like EUR-XXX. When I enter adb reboot oem-unlock it gives me option to unlock bootloader. Then a pressed and disconnect cable and it started a factory reset. Then haven`t happend nothing for cca. 10 min, so I reseted a phone. I mark my phone as unlockable. I will try again when I came home.
[LG Optimus 4X HD] Manholas:
My equals

:confused:I hesitate to make the bootloader unlock. I bought mine at Ensitel and is equal to yours. I wish I informasses now desbloqueas you and what is your process that was you employ yourself.
[LG Optimus 4X HD] Dexter_nlb:
is this not some kinky stuff??? (sorry, could not skip the comment, google rulez)
[LG Optimus 4X HD] Samu23el:
Thanks for the hard work guys!
[LG Optimus 4X HD] Manholas:
OK

I'm a noob and have little fear of messing up. Effectively will unblock after collecting some information. I will carefully knowledge that I have no more to give.
[LG Optimus 4X HD] LGaljo:
ASWSWH unlocked

I succesed to unlock my phone.

1. ASWSWH

2. EUR-XXX

3. unlocked

4. SWS WHITE

5. Mobitel - Slovenia
[LG Optimus 4X HD] tomkaehm:
It does not work. Security error or so.
[LG Optimus 4X HD] GizModio:
1. AGBRBK

2. 234-000

3. no

4. GBR BLACK

So Is that it? expect no unlock?

Optimus 4x for sale...
[LG Optimus 4X HD] @non4:
Not for now, there may be a way as its same phone but we need to dig deeper

Sent from my rooted P880
[LG Optimus 4X HD] Kanad:
Dear emanoj.i9103,

Can you please post the step by step guide of bl unlock that you followed?

Regards,
[LG Optimus 4X HD] LamerDuck:
ok, slowly a pattern gets visible there.

Usualy ASWSWH as a swiss phone is not unlockable, but when you are logged in in an "unlockable" country, it will flash to EUR-XXX and unlock.

so its not the IMEI, but the carrier (country) you are logged in, that decides if your phone unlocks.

so dexter_nlb was right in the end, he suspected this from the start. propz lad^^

so, now we just need to make a nice holiday and have the time and the nerves to spend it with unlocking our phones.

or someone in poland or slovenia could open a "phone unlock" business, selling unlocked o4x phones over amazon to countries that are not on the unlockable list^^

jk.

we'll find a way to unlock every single damned phone.

someone from germany was able to unlock a 262-000 with an O2 card inserted, it may be possible that O2 is not on the LG list of "locked carriers".

can someone with 262-000 from germany try the official unlocking method with an inserted O2 card?
[LG Optimus 4X HD] laufersteppenwolf:
dunno about O2, but t-mobile worked fine for me ;) maybe borrow a t-mobile sim ;)
[LG Optimus 4X HD] @non4:
If its as simple as that three is a no go

Sent from my rooted P880
[LG Optimus 4X HD] tomkaehm:
262-Unlock

I had quest LG this: "Did you plan to make a update that i can unliock the bootloader of my german version of LG P880 (ADEUBK). I have V20a Jellybean but I can't unlock the Bootloader with this Firmware."

and it was answered me:
[LG Optimus 4X HD] fire3d:
i got these mail too, we had useres with leaked roms and unlocked bootloaders, so what they wrote is not true.

Also they wrote:
[LG Optimus 4X HD] @non4:
Works for euro open users but perhaps not others. Need confirmation from a UK 234-000 user that even with official update it doesn't unlock. I will then send a screenshot of their post to LG and try and get an answer off LG dev team

Sent from my rooted P880
[LG Optimus 4X HD] letitgetme:
1 AHUNBK

2 EUR-XXX

3 Yes unlocked

4 Black Black

with t-mobile sim inside it was giving securety error, but after factory reset and turning on with TELE2 sim it unlocked with adb reboot oem-unlock
[LG Optimus 4X HD] nedooo:
So this could be something sim and original provider should match and maybe unlock is possible???
[LG Optimus 4X HD] gordon0001:
232-10 is the provider drei.at in austria.

i've got also a ASWSBK phone but 232-05 (which is orange.at; if i would insert an A1(another provider in austria) simcard i would have 232-01) and phone is unlocked.

swiss is 228-XX

source: http://code.google.com/p/android-so...le&r=f5fd4235cf143c9dcc12c6105c54162b579a029b

note: all except 232-10 (drei.at) gets ANEUBK which is available for download
[LG Optimus 4X HD] Agamemmnon:
Aha ok, many thanks for the Infos.

But ASWSBK is for Switzerland, or not?

Do you now when the Update comes vor Austria?
[LG Optimus 4X HD] emanoj.i9103:
Phone connected to computer in adb mode.

In command prompt,

adb reboot-bootloader

And followed by below command in fastboot mode

fastboot oem unlock

Choose unlock using volume buttons, and power button to select. I waited for a couple of minutes and forced reboot by removing battery. It was unlocked.

Note: I was unable to flash insecure boot image and recovery via fastboot but did that successfully within Android terminal with su permissions.
[LG Optimus 4X HD] Tim_Pan:
no,we can flash images with fastboot commands,but only in "adb reboot oem-unlock" fatboot mode.

E:\LG_P880_ROOT\platform-tools>fastboot flash recovery recovery.img
sending 'recovery' (6612 KB)...
OKAY [ 1.620s]
writing 'recovery'...
OKAY [ 0.925s]
finished. total time: 2.549s

and we get security errors in "adb reboot-bootloader" mode.

btw, my phone was unlocked in this mode.
[LG Optimus 4X HD] tobixdev:
I Phoned them on tuesday they said they didnt have received the update from LG yet.
[LG Optimus 4X HD] skryptus:
Guys, there's already two threads for discussion of the bootloader unlocking methods: the general one and the one for german phones. This one is for the information whether your phone is unlockable or not, so please, keep it to posts with the respective information.
[LG Optimus 4X HD] breaky9973:
Thai model with Thai V20A also unlockable

1 ATHABK

2 P88020a-ESA-XXX

3 Yes unlocked

4 Black Black
[LG Optimus 4X HD] nedooo:
Yup, just read it again and same conclusion.

Question do you know how to reboor fastboot, well it is following command: adb reboot bootloader, and now you are in fastboot mode...wonder why you couldn't flash in fastboot, well from your post you never went to fastboot mode...
[LG Optimus 4X HD] emanoj.i9103:
That is what I have mentioned.

adb reboot bootloader

Where are you seeing difference?
[LG Optimus 4X HD] tiflao:
someone try this ?

http://bbs.gfan. c o m /forum.php?mod=viewthread&tid=5887598&extra=page%3D1
[LG Optimus 4X HD] Shuny:
This can't work.
[LG Optimus 4X HD] peter_altherr:
1. ANEUWH

2. EUR-XXX

3. yes

4. GLOBAL/GLOBAL N N EI GSM ->taken from the info given by the csm.lgmobile.com + imei link as i am more than 10.000km away from my phones box :)
[LG Optimus 4X HD] Shuny:
1. ADEUBK

2. 262-000

3. no

4. DEU BLACK BLACK
[LG Optimus 4X HD] roesti91:
Well, I also got an ADEUWH and I already have the V10h EURO OPEN flashed, but the v10h flash did not change the "Factory Version" to anything beyond: -262-000- in the Hidden Menue.

The phone remembers it is a 262-000 although it got a EUR-XXX flashed and is running this V10h fine.

How can I change the "Factory Version" to -EUR-XXX- ??? Then it might take on the EUR-XXX @v20a also in the next flash ....
[LG Optimus 4X HD] paul-ac:
1. ADEUWH

2. 262-000

3. no

4. DEU WHITE WHITE
[LG Optimus 4X HD] LamerDuck:
does not seem possible at the moment.

we are stuck and perhaps need to wait until the official firmware is out, it seems.

but lets see, maybe somebody finds a way the next days.
[LG Optimus 4X HD] roesti91:
Well, the v20h flash does not need to check the IMEI at all. All it needs to read is this "Factory Version" String (which is not replaced by a normal firmware flash) and then say: NO unlock for you.
[LG Optimus 4X HD] nedooo:
Did anyone tried to flash EURO 10a, maybe not all .kdz have this string included???

I will try now to flash EURO 10h with UpTestEX_mod2_marwin - CS_EMERGENCY and will report in few minutes...

I noticed one thing: While I flash new kdz in the end it goes from iParam 95 (few times) and jumps to 100 and than 0 - reboot???

So EURO 10h is a no go, wont boot after flash...now 10a...
[LG Optimus 4X HD] roesti91:
One would require the TRUE factory firmware image of the EUR-XXX/ANEUWH which writes every last firmware bit back to factory EUR-XXX - I dont think it exists for this phone???
[LG Optimus 4X HD] tiflao:
Waitting news
[LG Optimus 4X HD] nedooo:
Well I have to wait cca. 45 min. for v10a kdz in meanwhile I will try official LG Update Tool...funny it tels me that I have EURO v20a and that is latest no need to update?!?

Now I choose recovery and entered IMEI model and Serial Number...it's updating to v10h (can be seen in C:\ProgramData\LGMOBILEAX\Phone)...maybe it will boot this time (btw it boots JB normaly just that it's not EUROXXX).
[LG Optimus 4X HD] nbock97:
sorry I have to tell you nope - I had Custo Nexus updated to v20 -> downgrade to v10h euro open for root -> update to v20 -> kept root -> unlocked bootloader and installed CWM!!!

(all stock firmwares which I had before where euro open)

1. CustoNexus 0.99

2. v20 eur-xxx

3. yes

I don't got that think with csmg.lgmobile.com and the IMEI and I also don't know the label (where do i find?) but my phone is unlocked! v20 eur-xxx
[LG Optimus 4X HD] future81:
You already downgraded to euro open so it's the same case as all those had unlock bootloader
[LG Optimus 4X HD] nedooo:
I did use asian firmwares, maybe that was problem???

Stil doing official LG web recovery update...maybe it will fix it...

NOPE wont boot ICS...but this workshttp://xdaforums.com/showpost.php?p=38838927&postcount=7 (did got some scary image like don't touch cables on phone screen, after power button press for 10 sec. ICS rebooted)
[LG Optimus 4X HD] nbock97:
AW: Locked or unlockable? Please post your info

I thought because you wrote you got back and got 206 or what ever and not eur-xxx

and to asian firmware yeah maybe the support from mails did always says euro open will get bootloader unlock! ok lg hong kong annnounced jelly bean for 1st half but did they also announce open bootloader (for hong kong)??
[LG Optimus 4X HD] juanacevedo:
Great.. My phone came from Taiwan. Does that mean I'm screwed as far as uovking the bootloader goes?
[LG Optimus 4X HD] nedooo:
Well mine is from Europe and I'm screwed :eek:
[LG Optimus 4X HD] Vosetal:
My too (ACWTBK) unlocked and rooted without problems.

:good:

1.ACWTBK

2.V20EUR-XXX

3.Yes

4.CWT Black Black
[LG Optimus 4X HD] chinhan5129:
Information

1. ASTLWH

2. V20EUR-XXX

3. Yes

4. STL White White
[LG Optimus 4X HD] Subhajitdas298:
Please tell what about AINDBK? Is it unlockable?
[LG Optimus 4X HD] laufersteppenwolf:
if can work, but this is not the way LG made the bootloader unlockable.... use "adb reboot oem-unlock" that's the official command, and not someone thinks it is/could be
[LG Optimus 4X HD] momothecat:
edit by me: sorry...wrong post
[LG Optimus 4X HD] tosco22:
1. ADEUBK

2. 262-000

3. yes, unlocked

4. DEU BLACK BLACK

5. Simyo/Spain
[LG Optimus 4X HD] Benny100:
1. ADEUWH

2. 262-000

3. no, locked

4. DEU WHITE WHITE

Windows 7 32Bit - "Security Error" :(

Windows 8 64Bit - "Security Error" :(

Kubuntu 12.10 - "Security Error" :(
[LG Optimus 4X HD] JustChris20:
What is your provider, i have O2 prepaid (Tschibo), I think prepaid not working. 262 07, 262 02 seems working i don't know.

send from my rooted P880
[LG Optimus 4X HD] Benny100:
I have testet O2 Prepaid and Vodafone Prepaid not worked.

1und1 Vertragskarte 16h wait not worked Permission Denied!
[LG Optimus 4X HD] JustChris20:
So it seems so prepaid cards or reseller cards not working :mad:

send from my rooted P880
[LG Optimus 4X HD] hernestwisnu:
1. AIDNBK

2. 262-xxx

3. yes, unlocked

4. IDN BLACK BLACK

5. Telkomsel/Indonesia
[LG Optimus 4X HD] pescaero:
cuando lo comprastes?
[LG Optimus 4X HD] Apoena:
English please!
[LG Optimus 4X HD] theofficialpimp:
Are we supposed to unlock the boot loader with LG's unlock method or does it come unlock with the software update?
[LG Optimus 4X HD] tosco22:
Last January 2013 (Amazon, v10h, ADEUBK)
[LG Optimus 4X HD] laufersteppenwolf:
i've got a prepaid card, and it unlocked just fine....

it has to be unlockable somehow, LG confirmed that all german (german-open) phones are unlockable...

it won't come unlocked, only unlockable. just use "adb reboot oem-unlock"

or have you ever seen a device that came already unlocked? ;)
[LG Optimus 4X HD] cupidstunt:
Both Samsung and Sony ship phones with unlocked bootloaders

Edit: only Samsung sell unlocked phones, the Sony's are unlockable
[LG Optimus 4X HD] Apoena:
(OT)

Really? which one?
[LG Optimus 4X HD] ronhoover88:
Most of their phones(international release) not US variants
[LG Optimus 4X HD] LtBullheart:
1. ADEUBK

2. 262-000

3. yes, unlocked

4. DEU BLACK BLACK

5. Free mobile/France
[LG Optimus 4X HD] Apoena:
Sorry, I searched around and I couldn't find anything on it. I'm not doubting you, but I never heard of that. Then again, I don't remember having to unlock the bootloader on my SGS2 to install custom ROMs.... but it's been a long time
[LG Optimus 4X HD] laufersteppenwolf:
no, samsung does not ship unlocked bootloaders. they're just accepting everything, but increasing the flash counter. if there weren't the flash counter, they'd be unlocked, but they aren't really unlocked ;)

alright, so back to our 4x HD bootloaders :D
[LG Optimus 4X HD] mateuszd:
1. AGBRBK

2. P88020a-234-000

3. Unlock

4. GBR BLACK

5. Orange UK
[LG Optimus 4X HD] arnookie:
How did you UNLOCK bootloader on AGBRBK? WHAT PROCEDURE AND FILE DID YOU USE? PLEASE TELL US HOW!!!!!!
[LG Optimus 4X HD] RATTAR:
ADEUWH

262-000

unlocked:yes

DEU BLACK BLACK

TMOBILE

Yes, i know the last two signs of the first entry says it is white but on the box ist DEU BLACK.
[LG Optimus 4X HD] boonkui:
[MENTION=3506654]Flying_Bear[/MENTION] - Glad for your handset. I have the same handset on Starhub Singapore SIM. My phone was rooted. I could not unlock - the phone stayed at Download Mode till I pulled USB cable, after that it stayed at Unlocking Bootloader message. After forced reboot, I found that there was no factory reset done and bootloader was still locked. Any tips?
[LG Optimus 4X HD] Flying_Bear:
none that i can think of that you can't read here on the forum. check and recheck that you have proper drivers installed (both adb and fastboot). i unlocked back when 20a leak was first out, try to find first of the guides that were written, i used that one, and sadly i can't find it atm. if you want to, try flashing ANEU 20A instead of ASEA rom (this made my device list itself as eur-xxx)
[LG Optimus 4X HD] atomanti74:
Hi,

Anybody tried unlock bootloader 216-30?
[LG Optimus 4X HD] future81:
check this i think he has starhub too http://xdaforums.com/showpost.php?p=40437346&postcount=4183
[LG Optimus 4X HD] funkstex:
1. ASWSBK V10H_00

2. EUR-XXX v20a (now after an afternoon of trying to unlock... cm10.1 nightly flashed in 5min)

3. yes

4. SWS BLACK BLACK

5. Discoplus/Germany, although the device was bought at eteleon

I'm searching for openpdroid.zip for p880 but cannot find it... does anybody knows where to find?
[LG Optimus 4X HD] boonkui:
Thanks. It worked ;) I followed the adb and fastboot method. I needed to update my fastboot driver too. :cool:
[LG Optimus 4X HD] domieatworld:
232-10

1. AHASBK V10D

2. AHASBK V20A - 232-10

3. No :(

4. HAS WHITE WHITE

5. 3drei(Hutchison-Austria)

first I flashed the official europe open firmware. I tried to unlock it and get the LG security denied error(official method)...(I did a clean install every time)

now I am on the official has/hutchison(austria) firmware. I tried to unlock too. with the official procedure I got just the LG logo and then the battery charging logo.

then I tried to unlock it with this commands: "adb reboot-bootloader"....I just got the Lg logo. then I typed: "fastboot oem unlock"...my pc wanted to install the fastboot driver. I installed it. I tried it again. "adb reboot-bootloader"---}Lg logo---} then I typed: "fastboot oem unlock"......on the display I had the option to unlock the bootloader or not. I choose to unlock it. at the cmd was to see: bootloader is unlock now. after that I removed the usb-cable and the battery.

but in the hidden menu stays: it is locked :(

if I repeat this commands I get the message that it is already unlocked...

I mailed to the carrier (3drei) if there any official way to unlock it because I read that it depends on the carrier if it is unlockable or not. they wrote my back that the give no support for this I should contact LG....

:(:(:(

by the way. for me is the europe open firmware better than the hutchison austria firmware...
[LG Optimus 4X HD] j4w3l:
Same config, German phone, with 262-000, same country here (but B&You/France for the carrier), and "Permission Denied" :'(

How did you manage to unlock your BL ? Which method ?

Merci d'avance !! :)
[LG Optimus 4X HD] tiflao:
+1 please

Enviado desde mi LG-P880 usando Tapatalk 2
[LG Optimus 4X HD] sPEADy:
I have some stupid Questions :P

1. Is it possible to Lock the Bootloader again if you get it unlocked by any means?

2. How does this effect yoour warranty on the phone?

3. Do you lose your warranty?
[LG Optimus 4X HD] Agamemmnon:
The officially Update for Switzerland is out, but is the same as Germany and Europe, i make a MD5 Checksum

Switzerland Version MD5 b471179c5bddb4f49dac051f87fa6423

German Version MD5 b471179c5bddb4f49dac051f87fa6423

Euro Version MD5 b471179c5bddb4f49dac051f87fa6423

You look it is the same Software, my guess was right, it is IMEI and Carrier dependet, you can flash what you want.
[LG Optimus 4X HD] LtBullheart:
I used the official method posted by laufersteppenwolf ( showthread.php?t=2224020 )

- the phone was rooted

- I charged battery to 100 %

- I waited at least 2h with data connection activated

- used Archlinux 64 bits to perform adb operations :

1) check if adb sees your device with 'adb devices'

2) run 'adb reboot oem-unlock'

- device reboots and asks if you want it unlocked by pressing VOL+

- after you pressed VOL+, it writes 'Download Mode !!!' in red and notifies you it will perform a factory reset, wait until it says 'Done... Now ready!' (it was really fast)

- unplugged the usb cable and pulled out the battery

- putted battery back and rebooted, then I checked the bootlader status in hidden menu ( 3845#*880# )

and voilà, it said Unlock

Since, I successfully installed ClockWorkMod using ROM Manager and now happily run CyanogenMod 10.1

Good luck

Edit : I never flashed any leaked version and I used the official LG Tool to upgrade to v20a.
[LG Optimus 4X HD] tiflao:
When u updated your sim is on the phone?

Enviado desde mi LG-P880 usando Tapatalk 2
[LG Optimus 4X HD] LtBullheart:
The phone was bought the 03/19/2013 without SIM on amazon.de. Since then, I always have in it the sim card from my carrier 'Free mobile'.