Hi everyone,
I guess many of you are in huge pain with the KU990 new version, that is, the ones that cannot be unlocked using lg3g or mtty methods.
Here I would like to describe everything I tried so far and the current status I am locked in today.
My biggest mistake was to not backup my phone (the famous .nv2 file) at the very beginning ! I strongly advise people who wish to modify their phone somehow to first backup with LGMDP !! Otherwise you may end just like me...
I started with a SFR (VDF FRANCE) locked phone and, as I did not have the SFR sim card at that time, I tried to unlock it with both the lg3g and the mtty methods. Unfortunately the unlocking procedures did not work at all, although I ensure I tried everything. I finally read somewhere that the newest KU990 had a supplementary protection that could not be overcome.
In parallel I was able to manage to change the firmware to OPEN or VDF (EURO) versions ranging from v10a to v10j (using LGMDP). So it seems that there is no big issue there.
However at some point in the process (I guess the unlocking), my IMEI was changed. And my phone started to ask me to "Insert USIM card" or to refer to "Invalid USIM card" depending on if a sim was in or not. I understood that USIM was referring to international sim cards so I tried to reinstall VDF firmwares with VDF .nv2 and VDF Flex backups (still not mine), but this made my phone unusable as it displayed a nice yellow screen and the fact that some wallpaper file could not be found. Still I could solve this problem by I changing back to OPEN firmwares and .nv2.
Now I recovered the original sim card from SFR and was able to obtain the unlock code from their hotline. But as my IMEI has been changed, the unlock code fails now.
Thus I tried to reset or to change my IMEI back to what is written below the battery using either lg3g, mtty, QPST or NVEditor. This also leaded nowhere as even reading the IMEI with lg3g and mtty failed and as QPST and NVEditor revealed that the NV_UE_IMEI_I parameter was protected (NV_READONLY_S). I tried many different things with these tools but it does not seem possible to break the protection.
I guess my only chance now would be to insert my old IMEI into an existing .nv2 file. I have found some "NV2 - QCN TOOLS V1.4" that can do this but only on the KU20.
Does anyone has a tool allowing to insert a new IMEI in a .nv2 ?
OR
Did anyone go through the same difficulties and did finally find a solution ?
any help will be greatly appreciated )
please do not ask me how i did this or that for the moment, if I can solve my problem I will certainly return the favor to all of you later on.
Hello,
Have you tested the tools for the KS20, because the. NV2 is certainly quite similar.
@+
Thank you for your suggestion.
I tried the tool but first it returns a NV2 Status Error when I load any .nv2 file, second the IMEI is forced into 357323-01-XXXXXX whereas both my original and current IMEIs start with 353638-02, and third, although the tool indeed creates the file (I chose "Branded nv2"), the backup fails (LGMDP reports four NV ITEMs with NV_BADPARM_S with no more information) and I end up in Emergency mode.
A KU990 version of the tool might do the trick, if it is possible to specify the full IMEI of course. I can send my current nv2 file(s) if it can help anyone...
hi,
Can you send me by PM your backup NV2, the original IMEI and IMEI on your phone now.
By.
bl40
hello.sorry for my bad english.
a have a big problem with my lg bl40.
i flash the gsm with new rom , but i not make back up of the nv2 file.
download this file from internet but with different imei.
what can i du, pleas help my.
A valid nv2
Please can someone send a valid nv2 for lg P500, i`m from romania. many thanks
hi,
uses the search function it works fine
http://forum.xda-developers.com/showpost.php?p=22671293&postcount=52
hellp
pleace send IMIE code (nv2) for iran
my email [email protected]
tank you
Related
Hello everybody!
I have read lost of post regaring KS20 flashing procedure.
Most common is to:
1) backup NV2 with LGMDP
2) flash phone with desired ROM erasing EFS
3) restore NV2 settings
The only problem is that after restoring NV2 the phone says "Illegal use" and "Unavailable OTP Block" message appears on the screen, so the phone becomes unusable... :-(
We all should backup NV2 with QPST Service Programming instead of LGMDP.
However if you have a NV2 backup done with LGMDP only there is a solution
1) Flash with any ROM that does not cause "Unavailable OTP Block" error erasing EFS
2) Restore NV2 with LGMDP, but do not restart the phone!
3) Backup NV2 with QPST Service Programming to QCN file
4) Flash with the ROM of your choice erasing EFS
7) Restore NV2 with QPST Service Programming from QCN file
And that is all!
Of course you have to switch USB settings with Engineering Menu after every flashing.
but i am now not able to connect with the computer,
what can i do?
In that case you should use Emergency Mode
Turn on device while pressing Send and Internet buttons.
A green LED will light.
yes it is done.
i found out i can only flash with chinese rom, but i really want an english one.
(my ks is bought in hk with chinese version)
can you advice me how to flash with english rom?
Well, you should be able to flash ANY ROM using one of those flash tools mentioned above.
I had Polish unbranded ROM and I checked several branded ROM-s like French, German, Polish and finally English (HKE).
If you are able to turn on your phone in emergency mode you should be able to flash it, and it does not metter what ROM do you use. The problem might be in ROM format. Do you have a standalone MZ file or flash.bin with additional files?
Try the branded ROM and pray.
When i turn on device while pressing Send and Internet buttons.
it didn't show a green LED light and didn't go to emergency Mode!
what should i do?? help...
1. Disconnect from USB
2. Press Send and Internet buttons and hold
3. Press Power On while you r still holding Send and Internet buttons
4. Then u should see a green led on, and ady to connect USB
hi cleverguy, after read your methods, I am really confused.
could you please tell the method to resolve "unavailable otp block" more clearly?
ps:could you release your MSN or mail address for me to contact with you?
Thanks a lot.
Visit my post pls
http://forum.xda-developers.com/showthread.php?t=405945
For OTP block result after flashing, there are two reasons:
1. You didn't check the "Erase EFS" option for flashing
2. Unbranded phone flashed with Branded or Hybrid rom, OR Branded phone flashed with Unbranded rom
So, in order to eliminate the occurrence of Reason 1., you must flash with "Erase EFS" option, if there after still coz you OTP Block or illegal use then it would be due to Reason 2, try flash with another rom
KS20 unavailable otp block
Hi Ray, the second you said caused my problem.
My phone is SFR French.
After read your post I have to raise a question: if I still want to flash a unbranded rom, how to solve the "unavailable otp block"? Do you have any advise? Thanks!
SFR French = Branded KS20
I think i have stated very clear in my post with the title "[How To] Flash Unbranded rom in Branded KS20"
Dun tell me you can't understand, unless you can't read english.
If you understand the steps and the rom that you need go ahead n do it, if you still hv no idea after reading my post, then i would say you r too smart to do the flash, i recommend you to stay with french.
Good Luck
Thank you ray, I have found the solution.
Hi guys
I own a greek Vodafone KS20. I bought it in Greece. I live currently in Sweden. The phone at some point had a problem with the touch screen and i sent it though UPS to Greece to be fixed by LG. The phone was working otherwise, appart from the touch screen. They claimed they fixed it, so i paid for the UPS to bring it back (80E all together). I received it today and the phone gives back the anavailable OTP block error while opening. LG Greece claims that they did nothing to the software.
So basically my question is if there is there any other reason that this error would occur besides a bad flashing procedure? They are not paying for the device to be delivered to them and i am not paying another 80E to do it again either.
And the second question, since my line of work is not with computers, is whether there is a kind soul here that would teach an old dog how to fix this step by step? Before Raykisi or abybody else jumps on my back ( ), let me say that I did read this and this but still i am not really sure how to take the first step. I can not get into the device so i cannot press anything on the dialpad.
If i get it right, the process would be to:
- Extract the current Rom or whatever.
- Patch it somehow
- Get it back in?
Is there anyway that i just overwrite it with a new one and be done since I dont wont to unlock the device, not to use an unbranded Rom, just to make it work again.
Thank you in advance for your help and understanding.
Easy problem, but y nobody trying to ask question in my own post?
Here is my own post:
http://forum.xda-developers.com/showthread.php?t=405945
Steps:
1. Find out your phone is Branded or Unbranded, the definition of that is in my post
2. Choose the right rom, Branded phone Branded rom, Unbranded phone Unbranded rom, for english there is not Branded rom so you need hybrid rom for Branded KS20, in my post you can find "English-HK-10a + French-voda-10f Rom", also if you are not after it, there is also a list of official Branded or Unbranded roms
3. Since your phone is hving "OPT problem", you can only flash your phone in emergency mode
Emergency mode: make sure usb is unpluged, turn off device, press and hold "send" and "browser" buttons then press power on, a green led should be turn on, connect it to LGMDP and flash it with the rom you get in step 2
Note: since you flash in Emergency mode your original .nv2 data in KS20 will be lost, if you did make a backup of it b4, restore it back to the phone after flashing, if you dun hv a .nv2 backup read my post at the very top you will find out how to get 1 from me
Also, to connect LGMDP to restore .nv2 file after flashing you ll hv to read this:
http://forum.xda-developers.com/showthread.php?t=396032
BTW, since you will lose your original .nv2 data (my .nv2 solution is not perfect) if you never make a backup b4, i would prefer you send it back to LG
Good luck
raykisi thank you very much for your help
If you feel this should be in your own thread then i can continue there.
1. It is a vodafone mobile, it has the logo, so it is branded.
2. So since it is a greek vodafone mobile i guess that this rom is the correct one????
Greece Vodafone 10g (DZ-KS20-00-V10g-202-05-APR-2-2008+0.dz)
I found it in your thread. Can i flash directly with this Rom?
3. To flash it I need the LGMDP program as you said. I downloaded it and the folder has 4 different versions: Euro, H3G, Open and US. I guess i should use Euro???
4. Will the LGMD recognise by the LGMDP program when i connect it to the USB in emergency mode? How will i know if it is recognised?
5. Are there any special settings in the LGMDP program that i have to select before flashing?
6. If i understand correctly after flashing in emergency mode it is certain that i will lose the nv2 information. I dont have a backup since i was not responsible for this error. I can send you the IMEI so that you send me an nv2 file for my phone. Does this nv2 file work for sure in branded phones? Because you said in the first post that the last digit is always different. What is the possibility it doesnt work from your experience? If it is very low maybe i can take the chance but if not, as you said maybe it is safer to pay another 100E and get it back to LG.
Thanx again for your help
Edit: Not to get me wrong, i understand that there is no responsibility whatsoever by you guys here, whatever i do, i do it myself. I am just trying to understand what are my chances of fixing this darn thing myself.
1. correct
2. correct, but you also can flash to any other language as long as they are Branded rom, or make a hybrid rom
3. I only used Euro b4, hvn't try other version
4 As long as you switch your phone to emergency and connect to USB, LGMDP will recognise it,
but for normal mode which you will use after flashing to restore .nv2 file you hv to follow this post: http://forum.xda-developers.com/showthread.php?t=396032
To restore .nv2 manually by LGMDP Read this (from post #104 to #118):http://forum.xda-developers.com/showthread.php?p=2531611#post2531611
5. Just try to play around with LGMDP, it is not complex, the only tricky thing is, you can press "Original" or "DZ" buttons to switch between two flashing mode
6. with my Branded .nv2 file, you can use with any branded rom, if you want a perfect imei no. you hv to go for LG, if you dun mind the last digit would be different then go for me
Your .nv2 file is ready to pick up, but you didn't send me your email address
If you need further help pls post in my post pls
*Edit: continues here
http://forum.xda-developers.com/showpost.php?p=2599095&postcount=124
cleverguy said:
Hello everybody!
I have read lost of post regaring KS20 flashing procedure.
Most common is to:
1) backup NV2 with LGMDP
2) flash phone with desired ROM erasing EFS
3) restore NV2 settings
The only problem is that after restoring NV2 the phone says "Illegal use" and "Unavailable OTP Block" message appears on the screen, so the phone becomes unusable... :-(
We all should backup NV2 with QPST Service Programming instead of LGMDP.
However if you have a NV2 backup done with LGMDP only there is a solution
1) Flash with any ROM that does not cause "Unavailable OTP Block" error erasing EFS
2) Restore NV2 with LGMDP, but do not restart the phone!
3) Backup NV2 with QPST Service Programming to QCN file
4) Flash with the ROM of your choice erasing EFS
7) Restore NV2 with QPST Service Programming from QCN file
And that is all!
Of course you have to switch USB settings with Engineering Menu after every flashing.
Click to expand...
Click to collapse
Could you teach me how can I
" 2) Restore NV2 with LGMDP, but do not restart the phone!"?
it was restarted automatically after restore NV2 file and then display OTP Block. What can I do?
I was try to Backup NV2 with QPST "after restart and before OTP block".
it was success to save QCN file. But it still no phone after restore QCN file.
Any idea?
PLease help, thanks.
Boris6 said:
Could you teach me how can I
" 2) Restore NV2 with LGMDP, but do not restart the phone!"?
it was restarted automatically after restore NV2 file and then display OTP Block. What can I do?
I was try to Backup NV2 with QPST "after restart and before OTP block".
it was success to save QCN file. But it still no phone after restore QCN file.
Any idea?
PLease help, thanks.
Click to expand...
Click to collapse
did you backup your own branded nv2 file with LG MDP?
If yes, you can reflash the unbranded rom with two mbn files "amss..." and the "partition" mbn file replaced by the three of your branded rom, and then restore your nv2 file, the problem will be solved and your own imei can be back again.
i tried to solve my problem for 1 day before i make this thread.i have an unbraded ls ks20 with english rom v10c.i tried to pass a greek rom (v10g vodafone).after flash it and the phone start setup shows me a message "illegal use" so i went back to english rom.since then my phone doesn't conect to the network "no service".everything else works fine .what should i do?did i kill my brand new lg ks20?
i really need help!
Never flashed before - but you need a special file (nv?) that is unique to your phone. If you didn't back that up, yes you killed it ! If you did search XDA for instructions on how to restore it.
You can do this step to find your signal.
1.backup your ks-20 NV file,the file you can backup from firmware.
2.firm ENG rom and chose ERASE ESF.
3.complete the flash,you can go in the system,and find Windag_open.cab install on the device,and open engineer mode.
4.open firmware,only flash nv file,since reset ,you will find the signal.
I do this to find my signal
lol, He loss calibration data from handset!!!! If there is no service after flashing without NV backup, only way to resolve that problem to flash the NVRAM with backup of another handset and correct IMEI and BT address.
To everyone,
If u need .nv2 file, pm me with ur imei no. and email address, i can generate one for you, but the last digit, which is calculated by your phone, would likely to be different and also i can only generate branded .nv2 since i only got branded .nv2 file. It could be work in unbranded phone but just u need to flash a branded rom or hybrid rom to use with it.
thank you raykisi you are the best it works 100%.
LG KS20 Network Problems
Sorry,
My e-mail is [email protected]
I can't help you with only your email address
Read the posts in my signiture pls
LG KS20 Network Problem
I have read it. Again, many thanks, specially to you; everithing from there was very helpfull.
I will give you the IMEI number: 357323-01-137914-1
I have managed to write the IMEI to the phone with QPSt; do i need to do something else?
If i conect back with QPST shows the IMEI (without the last digit)
Unfortunatell i don't have a valid backup for the nv file
Any help will be great
Ths in advance
Hi raykisi,
I still have my .qcn file... but what I'm trying to do is a little bit different: put a KS20 rom on a MS25 mobile (similar mobile that we have here in Brazil).
I tried to recover my network config using my qcn backup but I couldn't...
My phone always shows "No Service".
Tooo bad...
;(
Hope you can help me...
Thanya
What does ERASE EST do? Why would you think this whole procedure will help find the signal? I asked because my KS20 doesn't find any signal in a lot of places but my wife's KS20 does. I am wondering if there is anything I can try to resolve my problem. Thanks.
sam_sun said:
You can do this step to find your signal.
1.backup your ks-20 NV file,the file you can backup from firmware.
2.firm ENG rom and chose ERASE ESF.
3.complete the flash,you can go in the system,and find Windag_open.cab install on the device,and open engineer mode.
4.open firmware,only flash nv file,since reset ,you will find the signal.
I do this to find my signal
Click to expand...
Click to collapse
Hi to all
I have one LG KS20 here..
Version info:
ROM - v10b
Bootloader - v10b
Modem firmware - v10b
ROM date - 2008-03-07
So - I have a problem here.. When I put the SIM card inside and power ON the phone - I can use Wi-Fi but there is no Network... I read a lot here in this forum and find that if somebody flashes the mobile without backup the NV file - problem... So I did not flashed this mobile.. I just take it and when I insert SIM card just nothing happened... After that I checked the IMEI number - its something like 0000023000000<0
Can somebody explain me what and where is the problem and how to solve it...
Thanks in advance
Best Regards
i have the same problem.for three days try to solve it.i use avery way that appears in the forum and general in the internet.i didn't make it.finaly i send it back to lg for service.i wish you good luck.
pacienta said:
Hi to all
I have one LG KS20 here..
Version info:
ROM - v10b
Bootloader - v10b
Modem firmware - v10b
ROM date - 2008-03-07
So - I have a problem here.. When I put the SIM card inside and power ON the phone - I can use Wi-Fi but there is no Network... I read a lot here in this forum and find that if somebody flashes the mobile without backup the NV file - problem... So I did not flashed this mobile.. I just take it and when I insert SIM card just nothing happened... After that I checked the IMEI number - its something like 0000023000000<0
Can somebody explain me what and where is the problem and how to solve it...
Thanks in advance
Best Regards
Click to expand...
Click to collapse
It seems like ur NV is not there.Try using QPST to restore back ur nv2.If u said u didnt flash or reflash ur original ROM then just send it back to LG
Someone can help us??? I need any NV backup from KS20. Who can help us?
SOS
silence.i think there is no solution.lg in greece send my phone back unfixed.because it is unbranded.in greece lg ks20 appears only with vodafone brand.we really need help.
To everyone,
If u need .nv2 file, pm me with ur imei no. and email address, i can generate one for you, but the last digit, which is calculated by your phone, would likely to be different and also i can only generate branded .nv2 since i only got branded .nv2 file. It could be work in unbranded phone but just u need to flash a branded rom or hybrid rom to use with it.
LG KS20 Network Problem after i flashed a EN ROM
Hi Everyone.
My name is Costin.
I have a strange problem. I have flashed the Enghlish ROM, and i have managed to recover the IMEI number bach with the QPST tool but still no network.
Any ideea???
Can someone help me?
I would like to thanks to all the members of this site, was a grea help to onbtain necesary tools for my phone.
You can't simply use QPST to repair your imei complete, you can't repair no network problem in this way to, you must hv a working .nv2 file with you and restore it back, read the posts in my signiture pls
I've just got a new ks20 ... had the rom V10b-00-262-02-10-OCT-21-2007 (OS 5.2.1626.3) ... I tried to update my rom ... but the "LGMDP_1.5_Build_12.13" always show "No phone" under the phone columm ...
I have done the same as the thread " [How To] Connect KS20 with LGMDP + Free Unbranded .nv2" of raykisi ...
I don't know which step I had fault ... plz help me ...
Here what I've done :
1. Install "LG Corona USB Driver" in computer
2. Change necessary settings in engineering menu
At device:
-Enter this code to dialpad: 2676625720#
.....4. Port Setting → 1. Diag Setting → 1. USB Set for Diag → “OK” → “Back”.
.....4. Port Setting → 1. Diag Setting → 2. USB Switching → “LG Composite -DUN, DIAG”.
-press Done and soft-reset the device. (by turn off and on, I did)
3. Install "WinDiag_Open.cab" in the device and soft-reset it ...
4. Plug the usb cab to PC, at this step the PC found 3 new hardware and Installed completely (A port, A usb and ... something i forgot)
5. Run LGMDP_1.5_Build_12.13, click Select port, the LGMDP_1.5_Build_12.13 can found the port COM5 but there's always "No phone" under the phone columm and NONE the Model
I tried 2 time on a XP PC and a Vista Laptop ... Help me ... plz ... I need my nv2 to play with my new device ...
Thanks you very much ...
(my english is bad ... sorry)
btw .. how to know the phone is branded or unbranded ... my phone start up is only LG logo and then Windows Mobile welcome screen and then today screen .... is it unbraded ... it can be waranted by the LG ???
Hallo,
I'm new in the forum, i was advised to register here in order to try and find solution to a problem my ks20 has after flashing a rom.
I tried today for the first time to flash a rom in my new ks20(i bought it yesterday used with cooked rom on), i followed this guide http://forum.xda-developers.com/showthread.php?t=369481.
When my phone tried to open, after flashing, this message came up "illegal use unavailable OTP Block".So i flashed another rom in order for the phone to open. With the new rom it opened but it had lost IMEI number and cannot connect with any phone network.
I have made a nv backup with LGMDP but when i try to use LGMDP to restore it i have the same message as before "illegal use unavailable OTP Block" when the phone turns on.
I tried with different roms branded and unbranded. I also tried this http://www.myphone.gr/forum/showthread.php?t=181820&page=360
I dont know what went wrong, nv backup procedure was complete, why do you think that nv backup is not good? I am ready to through the phone away
Maybe you can provide me a solution or another nv backup with my imei ( as i read somewhere in here) if the one i have made is not good.
Thanks , waiting for your help.
LGMDP_EURO that i used to change the rom created two folders: one is called NvBackup and the other folder is named with my imei number, i used both .nv2 files that are included is these folders but every time the result after restoring was the message "illegal use unavailable OTP Block".
I don't know what to do!
Please if anybody has a clue
what rom did you last install?
Was it the branded or unbranded version?
The last rom was Greece Vodafone 10g it is branded.
The problem when i tried to install a cooked rom which i think it awas also branded.
My phone is vodafone branded
did you restore your nv2 in emergency mode?
no i installed a new rom (so that the phone could turn on ok even with wrong imei) and i tried to restore with the phone turned on
shut down your phone, start emercency mode(press : "Send" "Browser" "Power") a green led will shine on your mobile and connect it, and try to restore your back up nv2
how can i do that from emergency mode? i don't have "nv Default" option, also there is no "reset database & contents"
if you have msn send me your email adres in a private message.
Unfortunatelly i dont have msn but i have facebook account.If you have one we can talk from there
sure is the same
I have sent you my account by pm
rickou26 saved the day.
Thank you very much
pagia said:
rickou26 saved the day.
Thank you very much
Click to expand...
Click to collapse
Hi pagia,
I have completely the same story as you.
Could you please share how did you solve it ?
Thanx
Switchke said:
if you have msn send me your email adres in a private message.
Click to expand...
Click to collapse
Hi Switchke,
I completely have the same story as pagia, could you please help me ?
I do not have msn but a pm could I send my pm ?
Thank you in advance.
zezika said:
Hi pagia,
I have completely the same story as you.
Could you please share how did you solve it ?
Thanx
Click to expand...
Click to collapse
Did you solve your problem?
If not give rickou26 your imei number and ask him to make you a backup nv2 file.
use the program MTTY because it's only USB or has unlock without backup (like me) and has still bluetooth activated car solve the imei and bd address problem with that (should be works with usb cable also) :
1) get the phone recognized by windows and activate modem serial port interface
bluetooth perifs-> properties -> services -> check the 2 boxs
3) start -> programs -> accesories -> communication -> hyperterminal ->
set a name and modem port (should be found in step 1)
'call' (yellow phone)
4) type "AT" (without quotes) should see "OK"
5) type ATZ (activate echo)
6) AT%IDDE to unlock
7) AT%IMEI=X,X,X,X, ....
(15 chars) replace X by IMEI code or what you want
8) AT%BTAD=X,X,x,x,x,x ...
(12 chars from 0x0 ->0xF) same for bluetooth address, warning : the digits are in little endian (inversed)
9) switch off and on and the bluetooth should work again without asking for BD address
this method has worked for a KU380 only by bluetooth without install third party program to backup or repair and should works for other phones
help this dummy out ...
i met with the similar issue....
flashed my ks20 to upgrade to win 6.1
lost IMEI, bluetooth ID,...
QPST recognises the fone in 'download mode'...
so what can i do to recover my fone?
hi
hi all, i have just the same problem with ks20. I dont have imei and i do not backup the nv files. My phone is just a pda, no signal. On the back of the phone my imei is 357323-01-085909-3. Please help me, i have email [email protected]
Hello guys,
I bought a new S20 Ultra, 2 days ago, it was on Android 10, when I tried to update it via OTA, it showed a toast saying "registration failed".
So not knowing this is a problem, I simply downloaded Odin and Frija, used Frija to get the same exact ROM with the same CSC (XXV: Vietnam), and flashed it, so far all good, after starting, the sim card was showing "emergency calls only", I tried literally everything: Network reset, restart, re-flash another ROM, another CSC (no matter what I did, CSC didn't change on the phone).
I noticed that I can't change the network provider (stuck on Automatic, and shows a toast saying: "Error while searching for networks").
*#06# shows the IMEI code written on the back of the phone.
About Phone also shows the same IMEI code on the back of the phone.
*#0011# shows: IMEI Status: NG
I have searched a lot in this forum and others, and found that I should have backed up my EFS folder, following the instructions in this comment, I rooted the phone, and used Root Explorer, inside the EFS folder, there's no "nv_data.bin" file, I wanted to delete the IMEI folder, but had to do a backup first, then things went south flashing TWRP, so I stopped and re-flashed a stock ROM (removing root and everything).
I went out to a local repair shop, the person said that the phone isn't reading the sim, and it should be unlocked using a box (hardware unlocking). But I think that Chimera would do the job, but I don't understand why they only have a yearly sub, while some people need to use it just for 1 day :/
If anyone went through this problem, or has any idea, please let me know.
Thank you!
UPDATE: Apparently on the back of the device, it says: LIVE DEMO UNIT NOT FOR SALE.