Will Upgrading the ROM re-lock a phone I had unlocked? - Android Q&A, Help & Troubleshooting

When you unlock the phone, what gets unlocked ? The phone or your sim card ? Here is my real problem:
I originally had the XDA 1 from T-Mobile, bought an XDAII on Ebay, was told it was unlocked, but it was not. Ran the xda2unlock program from your website, it unlocked the phone so I could use the phone itself with my old SIM card from T-Mobile. Now I see there is a new ROM from O2, the question is, if I run that, will the unit be locked once again, and since the Radio verison on the new ROM is 1.17, and the xda2unlock only works on 1.10 radio stack (as said on the download site here) will I then be stuck with a phone with a new ROM that is once again locked - that I won't be able to unlock ? I don't want to try this unless I am fairly certain it is a safe thing to do... :? :? :?

it wont re-lock the phone if you upgrade

When you unlock the phone, what gets unlocked?
Where is the information stored that determines if a phone is unlocked or locked then ? If it's on the SIM card itself, then I could see that a phone upgrade wouldn't (shouldn't) have any effect. If it's on the phone, wouldn't that lock/unlock information be overwritten when the phone's ROM is upgraded? :?

re-locked
Nope, I unlocked my XDAII then upgraded the ROM to the latest and nope it didn't relock it stayed unlocked!
TJ

It's not on the sim card

lock information is found in the bootloader of the device, so it wil be not affected due a normal firmware upgrade

so if I replace the boot loader of the device then will it unlock the locked phone.

Related

HELP Olipro Unlocker could not unlock my SIMLOCK BUT CID is unlock, Radio is flash

I used Olipro unlocker to Unlock my phone. My phone was T mobile UK Ameo.
I followed all the three steps and the CID is Unlock, Radio is flashed WITH 1.57 VERSION.
My Rom is flashed with AP 3 rom.
When I changed myT mobile sim card to Orenge sim CARD, It indicates the SIM is locked. I am not sure what I should do to unlock the SIM.
I am travelling overseas and want to use the phone outside UK.
Please need advice.
Thanks for everyone who read this thread but could not provide solution.
I used IME-CHECK software to unlock the phone. So the sim is now unlocked.

Just a new 8125 G4 installed cr96 6.5wm cant sim unlock please help

i got cr96 6.5 rom installed and i ran lokiwiz03a and got the sim unlock code . ok so i put my tmobile sim in and it never asks for the unlock code it just acts like its constantly searching for network . what do i need to do ? i was gonna flash back to stock rom but idk where to find it and im scared of bricking the g4
Mine is doing the same. Anyone know the solution?
Ok, I figured it out. I had cid unlocked and then upgraded to cr96. So I ended up flashing the rom to the official windows mobile rom and then running lokiwiz. Lokiwiz provided the sim unlock code and then I entered it into the phone while still running the official rom. I then flashed the cr96 and everything was unlocked. So basically:
1 flash original windows mobile rom
2 run lokiwiz and click sim unlock
3 write down the number it gives you
4 turn phone on with a non official sim in it
5 the phone will tell you the phone is locked and give you a place where you can enter the code that lokiwiz came up with
6 enter the code
7 flash to whatever rom you want
the above assumes you are already cid unlocked

[Q] Does having SPL and a flashed rom (miri's rom) mean my phone is unlocked aswell?

Just wondering if this means that my HD2 is unlocked. Also, is there anyway to check to see if it is without trying another sim card? Thanks
SPL & a Custom ROM will not SIM unlock your phone...if you bought the phone from from the carrier call them to get the unlock code or buy one online if you need SIM unlock.

If you are unlocked, will it EVER lock you down?

Sorry if that's a confusing question. So like... If I unlock right now on Bionix-V will it lock me down if I flash another rom (ANY rom)?
Because I plan on unlocking my phone early, and then switch to AT&T or travel to another country in the far-future. Just so I'm prepared and don't have to do last minute unlocks.
Dont know the answer to your question, but in the past I have unlocked every phone I have had through tmobile. I get the unlock code, have an old ATT sim card on hand just for this. I simply enter the unlock code when I slip in the att sim.
If you have the unlock code (usually sent via email from tmobile) saved somewhere, you can always re-unlock it if it gets relocked with a rom flash
When I bought my mobile, it was already unlocked. I've been flashing different ROMs since my purchase and so far it hasn't locked back down on me. However, I have seen my hubby's phone relock itself after a crash once and it's still completely stock - bloatware and all (very weird).

[Q] Unlocking bootloader on network unlocked phone

Hi all. Im about to order this phone on ebay and just have one final question. I am unaware if wether this phone was factory unlocked or unlocked from a network. I know on some phones (xperia) if they were network locked at any stage you cannot unlock the bootloader, is this the case with the HOX+?
So basically I want to know is there a possibility that I wont be allowed unlock the bootloader of this phone and be stuck on stock rom forever?

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