[Q] How to SIM unlock LG Optimus T - Optimus One, P500, V General

Guys .. I have an LG Optimus T P509
I did install the stable version of CyanogenMod 7 from the topic
http://forum.xda-developers.com/showthread.php?t=946354
However, I bought the unlock pin number but whenever I put a different sim card other than Tmobile for example ATT, the phone wouldn't ask for unlock code and ends with no signal at all. Even when I search for networks can't find anything.
I was thinking may be I need to flash it back to the original stock rom. And if so where can I find it?
Any help
Thanks

I haven't unlocked my phone yet, but it sounds like you need to apply the sim unlock pin. The phone is not going to automatically prompt you to do so, you have to do it manually. just open up the phone app and dial
2945#*500#
replacing 500 with whatever the model number of your phone is. For me, it's 509. Also, I may be wrong but I'm pretty sure you need to flash back to the stock firmware in order to do this.

Yeah you're right ... I was able to do the unlock once I flashed the stock firmware, I got my unlock code from eBay, pretty cheap cost me only $5 and then after unlocking it, I flashed the CM7 and it's working absolutely with no probs.
Thanks for passing by

So how do those unlock codes work? Is there one that works for all phones, or are they unique from phone to phone?

I believe unlock codes are unique to each phone's serial number. Some phones, like my HTC Desire Z (a.k.a. T-mobile G2) can be unlocked by other means, a software script or the like. I don't know if this can be done for the Optimus T.

DevilMosin said:
Yeah you're right ... I was able to do the unlock once I flashed the stock firmware, I got my unlock code from eBay, pretty cheap cost me only $5 and then after unlocking it, I flashed the CM7 and it's working absolutely with no probs.
Thanks for passing by
Click to expand...
Click to collapse
I have the same issue, how did you flash back to stock firmware? Where did you get it from and what are the steps..

stock firmware
this goes without saying but you *really* should have made a backup of your stock ROM before flashing anything. That is where i got mine. However, if you need the stock firmware, you should be able to revert to stock using KDZ. I have not had great success with KDZ though (bricked two phones, successfully restored the WRONG firmware to the third phone, but was able to flash the original backup I made over the V10E firmware)
Just a thought, but I probably need to sim unlock my phone again since I had to flash KDZ

Related

How to flash firmware on X10a?

What's a known, working procedure for flashing a different firmware on my X10a? Currently it's got an AT&T R2CA016 firmware on it and I want to debrand the phone.
I've went through numerous guides, using the PC Companion and Update Service to replace files, problem is, the software tells me my phone is up to date, additionally there's no "Re-install" button on this software, so using the SE software seems useless.
I also looked at XS++ which couldn't connect to my phone. If anyone has an AT&T phone and has debranded it in the last month, please let me know which procedure you used.
FYI, I've backed up my APN using APN Backup & Restore.
Thanks.
aln688 said:
What's a known, working procedure for flashing a different firmware on my X10a? Currently it's got an AT&T R2CA016 firmware on it and I want to debrand the phone.
I've went through numerous guides, using the PC Companion and Update Service to replace files, problem is, the software tells me my phone is up to date, additionally there's no "Re-install" button on this software, so using the SE software seems useless.
I also looked at XS++ which couldn't connect to my phone. If anyone has an AT&T phone and has debranded it in the last month, please let me know which procedure you used.
FYI, I've backed up my APN using APN Backup & Resture.
Thanks.
Click to expand...
Click to collapse
I was stuck on 020 for ages, the old method (replacing the files) no longer works and if it does it complete luck. the method i used to debrand can be found at this thread http://forum.xda-developers.com/showthread.php?t=683793
download the version for your region, country or whatever. follow the instructions to install the 026 generic firmware and viola its debranded with the latest firmware
vengeance1990 said:
I was stuck on 020 for ages, the old method (replacing the files) no longer works and if it does it complete luck. the method i used to debrand can be found at this thread http://forum.xda-developers.com/showthread.php?t=683793
download the version for your region, country or whatever. follow the instructions to install the 026 generic firmware and viola its debranded with the latest firmware
Click to expand...
Click to collapse
Thanks, I'll give it a try later this afternoon. I just reading up on the Omnius method? It seems to rely on decrypted ROMs, which contain "phone.zip" and "android_xxx.zip". Any particular page to start reading the relevant information on? There's a 103 pages in that thread!
aln688 said:
Thanks, I'll give it a try later this afternoon. I just reading up on the Omnius method? It seems to rely on decrypted ROMs, which contain "phone.zip" and "android_xxx.zip".
Click to expand...
Click to collapse
Not to familiar with that method i dont think, i didnt read much into though (as i was getting ready for the 2.1 update)
the one i used was easy enough to use, basically click the exe which brings up a command prompt file, connect your phone in flash mode, hit any key and let it do its thing, worked perfectly first time after trying the switch the files method about 12 times
http://forum.xda-developers.com/show...49#post8170549
use the firmware files on there instead of the other one, thats the one i used
vengeance1990 said:
Not to familiar with that method i dont think, i didnt read much into though (as i was getting ready for the 2.1 update)
the one i used was easy enough to use, basically click the exe which brings up a command prompt file, connect your phone in flash mode, hit any key and let it do its thing, worked perfectly first time after trying the switch the files method about 12 times
Click to expand...
Click to collapse
I don't see any firmware links on that page, it's actually on the next page, page 43. A generic X10a R2BA026 firmware is listed there. I might give that a go, either way, SEUS of PC Companion is out in regards to flashing my phone, they won't work.
I was able to debrand the phone by flashing with a generic X10a R2BA026 using EXploid one click guide, however it is still locked to ATT. Anyone knows how to unlock the phone? Thanks.
Deadx10 said:
I was able to debrand the phone by flashing with a generic X10a R2BA026 using EXploid one click guide, however it is still locked to ATT. Anyone knows how to unlock the phone? Thanks.
Click to expand...
Click to collapse
What guide did you use to debrand your phone? Can you give me a specific link?
I'm not bothered if it's locked to AT&T, I just want the AT&T garbage removed from it, I thought rooting would do that, but rooting just gives me super-user access to muck up the phone by deleting crucial system files!
UPDATE: I used the Grospolina method, here. So far so good, at least my phone boots! This method worked fine.
Deadx10 said:
I was able to debrand the phone by flashing with a generic X10a R2BA026 using EXploid one click guide, however it is still locked to ATT. Anyone knows how to unlock the phone? Thanks.
Click to expand...
Click to collapse
If you're trying to use it on a different GSM network, You can Always go to one of the unlocking companies on the net...They use your IMEI number to unlock the phone.
OTHERWISE, If you're with AT&T, You CAN call customer care, Tell them you're traveling over-seas with your cell phone and you need it to be unlocked to use one of the UK's GSM Sim cards...
That's how I would do it personally
aln688 said:
I also looked at XS++ which couldn't connect to my phone. If anyone has an AT&T phone and has debranded it in the last month, please let me know which procedure you used.
FYI, I've backed up my APN using APN Backup & Restore.
Click to expand...
Click to collapse
You SHOULD be good to go! Once you Root it with the generic firmware...If not, I'm CONFIDENT you can find someone to help ya on here with reflashing it to AT&T's Stock Firmware. I went through the entire root, rebranded mine (since I was talking about taking it back to AT&T for the Captivate) And have re-rooted it again without a hitch
I followed this guide, as posted by Grospolina, and it worked perfectly, flashing it to a R2BA026 ROM. The root option also worked, and I installed the Market fix. In general, this IS how I want my phone, no AT&T garbage-ware installed. I'm content with this.
I tried other flashing guides, involving SEUS and PC Companion, all of them were a waste of time, due to a) The software kept telling me my phone was "up to date", and b) There was no "re-install" button to re-install the ROM on the phone. I WAS going to try Omnius which I suspect is a "pay-for" option, but this Grospolina guide worked 1st time. Many thanks to you Grospolina!
Now I can be busy re-installing some apps I wanted, and possibly restoring my APN file, I'm unsure if I need to at this point.
Diesel984 said:
If you're trying to use it on a different GSM network, You can Always go to one of the unlocking companies on the net...They use your IMEI number to unlock the phone.
OTHERWISE, If you're with AT&T, You CAN call customer care, Tell them you're traveling over-seas with your cell phone and you need it to be unlocked to use one of the UK's GSM Sim cards...
That's how I would do it personally
Click to expand...
Click to collapse
I called AT&T and they said that under some policies between AT&T and Manufacturer, they can't release the code. They asked to have the original owner of the phone to call in since I don't have the account with AT&T. I got this phone off Ebay, so I can't have the original owner to call in. I wonder if there is any other way to unlock it, because it is dead to me now since I can't use it under any other network....

[Q] How to Unlock with Cable?

OK so here's the problem.
I have a AT&T Aria A6366 Intruder, It was updated to the 2.2 OS when it came out. I have since unrooted it and now have a custom OS on it. I have decided to switch carriers so I need to unlock it.
I went to E-bay and paid for a unlock code. Went to input the code and says it's invalid. So I purchased the code again from a different company and the same code was given to me.
I have tried to do a Factory Reset and different OS versions. Still no dice.
I have been told by one of the people that I purchased the code from that I may need to have it unlocked though a cable. The problem that I have is that I can't seem to find any info about how to do this for this phone anywhere. When I searched the forum I found info for other phones but not the Aria.
Does anyone have any ideas that I can try to get this unlocked.
I have 5 attempts left to unlock it.
Thanks in advanced for the help.
I know it's not fun dealing with AT&T customer service, but they SHOULD give you the unlock code for free as long as you meet the requirements listed here: https://www.att.com/esupport/article.jsp?sid=55002&cv=820. My suggestion is to try going this route to see if they give you the same unlock code. If they give you the same one, then you should worry about trying other methods. If the representative insists on asking WHY you want to unlock the phone (even though you shouldn't be required to tell them), you can just say you're planning a trip overseas or something.
Another thought is that maybe your phone needs to be on stock firmware for an unlock to be successful (or at least, a ROM that is based on stock firmware). I'm not sure if this is true since I've never unlocked my own Aria. If I were you I'd probably make a backup, then install Liberated 2.2.2, and see if you can unlock when in that ROM. I wouldn't try more than once though because you don't want to waste your unlock attempts.
The other way to unlock the phone is to use a separate device that connects to the phone via USB port and puts it into a sort of service mode. The device is called an "XTC Clip". You might able to find a local shop that has one of these and can do the unlock for you. Otherwise you'd have to purchase one for yourself.
I had original OS the first 3 attempts.
drumist said:
Another thought is that maybe your phone needs to be on stock firmware for an unlock to be successful (or at least, a ROM that is based on stock firmware). I'm not sure if this is true since I've never unlocked my own Aria.
Click to expand...
Click to collapse
Just so you know, your device does not need to be on a stock rom. As long as the rom you are using is for your device (of course), and your networking is working correctly, then it should work.
---------- Post added at 09:08 AM ---------- Previous post was at 09:07 AM ----------
chrisk1152 said:
I had original OS the first 3 attempts.
Click to expand...
Click to collapse
This question may seem foolish but, are you using a valid (still working) SIM card of a different company when trying to enter the unlock code?
No I am not, I was using an old T-Mobile one. The code sellers said it would work fine.
chrisk1152 said:
No I am not, I was using an old T-Mobile one. The code sellers said it would work fine.
Click to expand...
Click to collapse
It wouldn't hurt to try one which is active...

[q]lg o1 sim unlock issue

Hello there, yesterday I bought an unlock code to sim-unlock my Optimus One and be able to use my device with other carrier.
I'm supposed to enter the code after the following key sequence:
2945#*500#
I've seen 3 different videos on youtube and it works just fine, but in my phone, when I enter that key sequence nothing happens, I've tried to do it with my current sim, with no sim, and with other carrier's sim and still nothing happens, so I never have the chance to enter the code I bought.
Has anyone else had this isssue?
I use CM7 nightly most recent update (#36?), cm7 stock kernel, link2sd, no overclock...
May it be rom related?
google told me that code is a LG service code, so I would sugguest to try it with the stock rom.
DJNoXD said:
google told me that code is a LG service code, so I would sugguest to try it with the stock rom.
Click to expand...
Click to collapse
Thanks, I'll give it a try
For unlock your phone, you need stock rom
In this thread, you have stock rom in zip format
http://forum.xda-developers.com/showthread.php?t=1309744
I'm use it for unlock my phone since any problem, and after I'm restaure my backup with my custom rom

[Q] How to Unroot Galaxy S2 i-777 ATT outside of USA ?

Hi all
I have a galaxy s2 i777 ATT - I can't find its own place on this forum so please forgive me if this in the wrong section
My S2 was unrooted and then I loaded omni kitkatt on it which locked my sim . big noob mistake I feel really dumb believe me.
Now I had unrooted it in the with odin and loaded Siyah ics to finally root it because the sim got locked. I live outside of the USA and nowhere near an ATT network. It has the CWM recovery on it
So all was well until someone ( my nephew ) decided to load omni again and then he loaded Carbon on it
The strange thing that is happening right now is that I do see Superuser in the settings but my sim is still locked I tried to use galaxys2 unlock but it doesnt do anything.
No biggie right but now it turns out my USB port is not working.
So here are my questions :
- How do i get my phone back to stock without a pc and root it (I live outside of the usa thats why I believe my sim gets locked ) so we can use the phone again to call
or
- Can I use mobile odin to load the stock version of android back on it and then unroot it again so I can unlock my phone ?
- Can I try to use frama root to check if my phone is really rooted and if so can it help root my phone ?
For now I'd just like to get it back to stock and root it ( so I can unlock my sim)
I need your help .
Thanks
Maddie
The good news is that you're in the right place, so welcome!
Next, I'm guessing you're still on Carbon? If so please look in System Settings >About Phone and please tell us the rom, kernel and modem version currently installed on your device. It's always good for us to know your full setup.
Regarding the sim issue I have virtually no experience with it, but I do know you can simply call AT&T and they should supply the unlock code (if you have a working phone, of course). You may have to supply your serial and IMEI #, both of which can be found on the battery, so probably best to have that handy if you call them.
You don't have to be on bone stock to unlock your phone, you just need the unlock code... and hang onto it for as long as you own your i777!
Have you tried the GalaxSim Unlock application? Here is a link to download the free version. You may find that you can unlock your rooted phone without flashing back to stock. I have limited experience with this application. I recently sold an AT&T SGH-I897 Captivate which I unlocked successfully with this app while it was rooted on stock Gingerbread. The purchaser wanted KitKat so I loaded CyanogenMod 11 onto it, and checked that the unlock was still present.
To answer your other questions:
I'm not sure why you are asking to "unroot" the phone after returning to stock. As far as I know, you need to be rooted to unlock the phone unless you have the unlock code from AT&T.
You can flash stock firmware with mobile odin. The stock package does not contain root, so your phone will automatically be "unrooted." If you go this route, I would suggest you use the I777UCMD8 stock tar from the Download Repository.
From stock UCMD8, you can successfully root the phone with Framaroot using the Aragorn exploit.
SteveMurphy said:
The good news is that you're in the right place, so welcome!
Next, I'm guessing you're still on Carbon? If so please look in System Settings >About Phone and please tell us the rom, kernel and modem version currently installed on your device. It's always good for us to know your full setup.
Regarding the sim issue I have virtually no experience with it, but I do know you can simply call AT&T and they should supply the unlock code (if you have a working phone, of course). You may have to supply your serial and IMEI #, both of which can be found on the battery, so probably best to have that handy if you call them.
You don't have to be on bone stock to unlock your phone, you just need the unlock code... and hang onto it for as long as you own your i777!
Click to expand...
Click to collapse
Hi thanks for helping out this is what I got:
CARBON-JB-NIGHTLY-20130929-0603-i777.zip
Kernel version
[email protected]#1sunsep2906:36:49 edt 2013
ROM: CWM based recovery v6.0.3.8
I cant find modem version
I'm in south America and I had bought the phone from the usa unlocked.
When Omni was loaded on the phone it locked my sim and I never had received an unlock code.
So when I went back to stock my sim still stayed locked so I rooted it again with Siyah ICS via odin so I could use galaxy unlock to get my sim working again.
How would I go about getting that unlock code for my sim from Att ?
Do you think I could email att ? I did find my serial number and imei #
The reason I wanted to go back to stock and than unroot it with the siyah ics kernel is because that seems to be stable for my phone.
Yes I have tried using galaxy unlock but it doesn't work it doesn't read the Imei nr and the sim stays locked
Honestly it looks like my phone is half rooted now
BTW the the sim being locked is more like a carrier locked I can't use the sim with my local telecommunnications company.
Thanks again.

GT-i9300 Sim Problems

Hi everyone. I'm having problems with my new sim card.
I am in the UK and i recently switched from o2 to iD mobile however the new sim card is not working. It says it's connected to iD network but emergency calls only. If i put the old sim card back in it works fine again. I also tried a friends iD sim card and it has the same problem. I thought it was perhaps locked to o2 only but it doesnt ask me to enter a network or an unlock code? Very confused.
Phone is rooted.
Device Model: GT-i9300
Android Version: 7.1.1
CyanogenMod version: 14.1-20161209-NIGHTLY-i9300
Would really appreciate any help
The phone won't prompt you for a network code unless you're on a stock rom. Custom roms can't interface with the simlock.
If your phone has ever seen 4.3 or later you'll need the code from the carrier at cost unless you've completed a contract and then they must unlock it for free.
I have a 4.3 btu rom if you have a btu phone: https://drive.google.com/file/d/0B4vTiHTBB629OVlvY0pkcXN4ak0/view?usp=drivesdk
If it has the O2 logo on the boot screen then DO NOT USE THAT ROM
Beamed in by telepathy.
shivadow said:
The phone won't prompt you for a network code unless you're on a stock rom. Custom roms can't interface with the simlock.
If your phone has ever seen 4.3 or later you'll need the code from the carrier at cost unless you've completed a contract and then they must unlock it for free.
I have a 4.3 btu rom if you have a btu phone:
If it has the O2 logo on the boot screen then DO NOT USE THAT ROM
Beamed in by telepathy.
Click to expand...
Click to collapse
Right, so you think get the phone back to a normal rom then use an unlock code?
It was/is a pay as you go phone. It's about 2-3 years old i got it off the wife when she got a new one.
When it boots now all i get is the custom cyanogen logo i believe, definitely not showing o2.
btw what exactly is a btu phone?
thanks for the advice
Download the latest stock rom from sammobile.com and flash it via Odin.
jsculldog said:
Right, so you think get the phone back to a normal rom then use an unlock code?
It was/is a pay as you go phone. It's about 2-3 years old i got it off the wife when she got a new one.
When it boots now all i get is the custom cyanogen logo i believe, definitely not showing o2.
btw what exactly is a btu phone?
thanks for the advice
Click to expand...
Click to collapse
A btu phone is the worldwide unlocked edition. Carphone warehouse sells such phones as well as carrier editions, like o2, ee, 3 etc which is why i asked about the carrier splash screen.
Flash stock rom, insert new sim, enter network unlock code, flash whatever you want.
Beamed in by telepathy.
shivadow said:
A btu phone is the worldwide unlocked edition. Carphone warehouse sells such phones as well as carrier editions, like o2, ee, 3 etc which is why i asked about the carrier splash screen.
Flash stock rom, insert new sim, enter network unlock code, flash whatever you want.
Beamed in by telepathy.
Click to expand...
Click to collapse
Thanks. Still in the process of attempting this(I'm slow)
So now i'm downloading the o2 firmware.
Then flash it over via Odin
Unlock phone via code
Then i'm free to use my new sim card and reinstall custom firmware like cyanogenmod without it un-unlocking itself?
thanks again for all the help btw!
By "flash whatever you want" if you want to reinstall a custom rom you'll need root. To get root you can flash chainfire autoroot (recommended) via odin or use one of those apps that claim to do it for you.
The main point is you have to be on a stock rom to network unlock the phone. There is no way around that.
Beamed in by telepathy.
shivadow said:
By "flash whatever you want" if you want to reinstall a custom rom you'll need root. To get root you can flash chainfire autoroot (recommended) via odin or use one of those apps that claim to do it for you.
The main point is you have to be on a stock rom to network unlock the phone. There is no way around that.
Beamed in by telepathy.
Click to expand...
Click to collapse
Yeah i should be able to get it rooted ok not too worried about that.
I've now flashed the stock rom onto the phone. So next step is unlocking.
I've seen there are apps that can unlock it for you, such as galaxsim. If i unlocked through this method and then flashed a new firmware do you think the unlock would remain?
thanks for all the help/advice!
Ok going a bit crazy with this now
I downloaded this firmware
http://www.sammobile.com/firmwares/database/GT-I9300/O2U/
I downloaded the one at the top of the page, flashed it via odin and its working fine etc. However it still isnt asking me for an unlock code and gives me the same emergency calls only.
So confused, not sure what else to try.
Put a sim card in from another network for the code prompt but you will still need a code. The only way to unlock it is to pay the original carrier who first issued the phone, the store it was bought from, or a phone repair shop.
When you have the code from the carrier, put the sim from another network in, enter the code when prompted and it'll immediately unlock for ALL carriers.
If you take it to a store they do the unlock process for you.
Galaxsim is old and defunct, for use on devices never updated.
The nvram edit doesn't work after 4.2.
Beamed in by telepathy.
shivadow said:
Put a sim card in from another network for the code prompt but you will still need a code. The only way to unlock it is to pay the original carrier who first issued the phone, the store it was bought from, or a phone repair shop.
When you have the code from the carrier, put the sim from another network in, enter the code when prompted and it'll immediately unlock for ALL carriers.
If you take it to a store they do the unlock process for you.
Galaxsim is old and defunct, for use on devices never updated.
The nvram edit doesn't work after 4.2.
Beamed in by telepathy.
Click to expand...
Click to collapse
Yeah that's the thing i still have my old o2 sim and if i put that in it works fine. Then when i try to put my new iD sim in it just sticks to emergency calls.
I think we're im at now is i have an o2 locked phone but because of previous firmware changes it wont prompt me for an unlock code. Also i tested both sims in another phone and they work fine.
Might take it to a shop today see if they can fix it.
O2 wouldn't have relocked the phone. The only thing I can think of is a software issue.
Did you have the correct apn dialled in?
Beamed in by telepathy.

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