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Hi everybody,
I recently upgraded my GT-N7000 to stock 4.0.4 firmware. I had unlocked it before in a dirty way (apparently, with 2.3.6, it was enough to put null bytes in the nv_data.bin file at the correct offset), which happens to not work anymore, since now the MD5 file isn't recomputed when it's incorrect, but instead restored from the backup (.nv_core.bak).
So, I tried the most popular solution, GalaxSimUnlock (com.spocky.galaxsimunlock on the playstore), which is not free any more (the app itself is free, but at the time you click on unlock, a payment of 2€ is required to proceed).
I wanted to try another solution, Galaxy_S Unlock, but if I read the comments correctly, it's not permanent, and has to be run at every reboot.
As a personal challenge, I began reverse engineering the nv_data.bin file format and the way the MD5 file is computed (it's NOT standard MD5, of course). Well, I managed to permanently unlock my phone by zeroing the simlock bytes, computing the new MD5, and putting the result in /efs/.
So, I was wondering if the method is already known and public and I just missed it, or if people would be interested to hear about it? I could also make a free (for real) app, which would be my first android app (another little challenge for me).
Anyway, if someone can tell me more about the state of the art of sim unlocking, that'd be great, so I know if I'm wasting my time or not.
Also, I'm pretty sure the method will work on any modern samsung phone.
Thanks in advance!
Still waiting for answers, but I decided to start anyway to develop the application.
Any information will be greatly appreciated
fhoguin said:
Hi everybody,
I recently upgraded my GT-N7000 to stock 4.0.4 firmware. I had unlocked it before in a dirty way (apparently, with 2.3.6, it was enough to put null bytes in the nv_data.bin file at the correct offset), which happens to not work anymore, since now the MD5 file isn't recomputed when it's incorrect, but instead restored from the backup (.nv_core.bak).
So, I tried the most popular solution, GalaxSimUnlock (com.spocky.galaxsimunlock on the playstore), which is not free any more (the app itself is free, but at the time you click on unlock, a payment of 2€ is required to proceed).
I wanted to try another solution, Galaxy_S Unlock, but if I read the comments correctly, it's not permanent, and has to be run at every reboot.
As a personal challenge, I began reverse engineering the nv_data.bin file format and the way the MD5 file is computed (it's NOT standard MD5, of course). Well, I managed to permanently unlock my phone by zeroing the simlock bytes, computing the new MD5, and putting the result in /efs/.
So, I was wondering if the method is already known and public and I just missed it, or if people would be interested to hear about it? I could also make a free (for real) app, which would be my first android app (another little challenge for me).
Anyway, if someone can tell me more about the state of the art of sim unlocking, that'd be great, so I know if I'm wasting my time or not.
Also, I'm pretty sure the method will work on any modern samsung phone.
Thanks in advance!
Click to expand...
Click to collapse
I would love to hear about the zeroing the bytes!
fhoguin said:
Hi everybody,
I recently upgraded my GT-N7000 to stock 4.0.4 firmware. I had unlocked it before in a dirty way (apparently, with 2.3.6, it was enough to put null bytes in the nv_data.bin file at the correct offset), which happens to not work anymore, since now the MD5 file isn't recomputed when it's incorrect, but instead restored from the backup (.nv_core.bak).
So, I tried the most popular solution, GalaxSimUnlock (com.spocky.galaxsimunlock on the playstore), which is not free any more (the app itself is free, but at the time you click on unlock, a payment of 2€ is required to proceed).
I wanted to try another solution, Galaxy_S Unlock, but if I read the comments correctly, it's not permanent, and has to be run at every reboot.
As a personal challenge, I began reverse engineering the nv_data.bin file format and the way the MD5 file is computed (it's NOT standard MD5, of course). Well, I managed to permanently unlock my phone by zeroing the simlock bytes, computing the new MD5, and putting the result in /efs/.
So, I was wondering if the method is already known and public and I just missed it, or if people would be interested to hear about it? I could also make a free (for real) app, which would be my first android app (another little challenge for me).
Anyway, if someone can tell me more about the state of the art of sim unlocking, that'd be great, so I know if I'm wasting my time or not.
Also, I'm pretty sure the method will work on any modern samsung phone.
Thanks in advance!
Click to expand...
Click to collapse
i have the same problem can you pls tell me or give a tutorial on how to do it pls.
Any update on your apps? Will be great if we could use it. Tks
For the past half a year, I have been using Carbon rom on my Lenovo K3 Note, and it was fine, until it started slowing down. So, I decided to change it to another rom (Nexus), and the next thing I know, my SIM card is no longer detected.
Turns out, the IMEI was wiped.
How would I go about restoring this?
The things I have done:
MauiMETA = Never detects my phone. Places it into meta mode, but the light never turns yellow. Tried on 3 computers, and had no success on getting it to work. For two of the three, I couldn't find drivers for mt65xx and CDC.
MTK Droid Tool: The option to change the IMEI remained permanently greyed out, and was never given the option to change it.
Official rom: Didn't work. Currently using it, and still the same error (Null). Tried factory resetting it, no change.
Engineering mode: Always gave me an error when trying to enter command, never accepted it.
IMEI.EXE: Everything worked, except the IMEI's never changed in my device.
Have tried multiple roms, multiple wipes, SPFlash, CWM (Even ended up installing it again because I wiped my entire phone with SPFlash), and pretty much every trick I could find.
I need this think working in 12 hours.
EDIT: Problem was resolved with trying "official" roms until one allowed me to update within the rom. The Update that was installed via Lenovo's bootloader fixed it. The finished product was that of an untouched phone; I had to reinstall a bootloader, root, and a new rom.
If flashing stock doesn't help, and you have no kind of backup of where the imei resides, you likely need a service center to hopefully help.
But know that any talk of manually inputting imei numbers is not allowed on XDA, as its illegal in most areas.
Good luck!
Darth said:
If flashing stock doesn't help, and you have no kind of backup of where the imei resides, you likely need a service center to hopefully help.
But know that any talk of manually inputting imei numbers is not allowed on XDA, as its illegal in most areas.
Good luck!
Click to expand...
Click to collapse
So it isn't as simple as entering the two codes under my battery into some location, and rebooting?
I'm currently in Europe, and have no idea how any of that works (Studying abroad).
RocketPenguin1 said:
So it isn't as simple as entering the two codes under my battery into some location, and rebooting?
I'm currently in Europe, and have no idea how any of that works (Studying abroad).
Click to expand...
Click to collapse
That talk is not allowed, as I said. Inputting numbers falls under tampering and is illegal in most areas, as I said.
So try flashing stock, if you can. But without some sort of backup, you may be out of luck unfortunately.
Please keep number inputting talk off XDA, or I will need to close this thread. :good:
UPDATE: So, I flashed another "official" rom, which initially didn't work. However, it did give me the option to upgrade, which I did. With that upgrade, the IMEI is back, and my SIM card works.
Thing is, the ROM is almost entirely in Chinese.
How would I change my rom without wiping the IMEI?
Please post the link to download the ROM you used.
I have the same issue and even service centers failed to attempt this.
Thanx and regards
Raju
Chennai
You can easily rewrite imei number using snwriter tool, google it.
I can no longer seem to be able to install custom roms,ive tried the resurrection remix rom and the cm13 rom but both are asking for a password after it installs and reboot(like when you encrypt the phone) so i cant access anything and my google password does nothing nor have i set another password
All i can do is the three finger recovery and reflash a full stock rom which does work.
I have checked the OEM unlock in developer options as well and full wiped before installing roms.
There shouldnt be any anti theft on the phone because afaik i have disabled all the anti theft options so there should be no reason why it asks for a password.
Does anyone have any idea why this is happening?
Does anyone know if doing a full factory reset through twrp instead of through the phone could be the reason why?
Good to see someone else is also having this ****ing stupid problem. I've been struggling with a way to fix this as well. I'm on the EVA-109 with a single SIM and its been giving me this problem no matter what I do. I read through one of posts on the CM 13 thread which stated you need to use Surdu's tweaked TWRP in order to not have the password booting problem. It'd be nice to get an official response from Surdu on this as he hasn't mentioned the need to use his version of TWRP.
Although, despite trying this I'm still having the password problem at boot but it might be worth a try if you do it. I'll pass you the link - Do let me know how it goes, though I wouldn't place all my faith in this. https://forum.xda-developers.com/p9/development/twrp-t3493979
I have the latest aosp extended rom(from march 8th) flashed, now every time when I use pattern to unlock my device, the first time nothing happens.
Same unlocking GUI showed up even when I use the right pattern.(If I provided wrong pattern intentionally I got informed that the pattern is wrong).
After I gave the pattern the second time there is one notification telling me that the "setting app" keeps stopping blabla
Can someone help me here please? Thanks!
Delete pattern before applying the update and set it again after update is done.
There is some twrp-installable zip which cleans the pattern, have a look.
Hello there.
I've got another problem with my lancelot. I've managed to rooted it successfully and install waveos, however, I still got an issue with no gsm data. I've found out, that my imei is missing - after typing *#06# phone shows you only hex serial number. It also does not show anything in system page in options.
I've read something about and tried to put back original imei back from the sticker. However, hydratool cannot open mtk module - it opens and before it is even able to load itself fully, it forceclose with no errors in log (it is the only module that it cannot open, rest works fine XDn't) and rest of the "tools" are simply crap.
What can I do? I did not have imei even when rolled back to miui 12 (I though it might be the issue, but it is not).
Here is a nice full guide that searching it certainly took less than writing this post ==> done by VD171
Make sure to thank him if you successfully solve the issue.
On a side note: Learn how to search stuff, it will save a lot of time for you and others.
XDHx86 said:
On a side note: Learn how to search stuff, it will save a lot of time for you and others.
Click to expand...
Click to collapse
You are definitelly right. I simply spend whole day on this and got actually tired of looking stuff, that leads to paid solution. I've even though of manual editing corrupted parts of rom (nvram etc), have working nvram from other phone as a correct matrix to do so.
Hope it works, I'll try it tommorow.
buczek0711 said:
You are definitelly right. I simply spend whole day on this and got actually tired of looking stuff, that leads to paid solution. I've even though of manual editing corrupted parts of rom (nvram etc), have working nvram from other phone as a correct matrix to do so.
Hope it works, I'll try it tommorow.
Click to expand...
Click to collapse
To edit nvram partition you need to flash engineering ROM first.
Hydra tool works, but it only works on engineering ROM, like I just said. And it's actually one of the main tools to fix IMEI.
Also Hydra tool isn't paid, what are you talking about?
XDHx86 said:
To edit nvram partition you need to flash engineering ROM first.
Hydra tool works, but it only works on engineering ROM, like I just said. And it's actually one of the main tools to fix IMEI.
Also Hydra tool isn't paid, what are you talking about?
Click to expand...
Click to collapse
Hydra ain't paid? That's good to know. I've got problem starting it though, mtk exe forced close itself before it loaded itself with no errors in logs, so I gave it up. I'll not have time today to do anything here, but I'll try in the following days.
I just assumed that changing imei is paid, just like getting rid of simlock years away.