Database Users

[SOLVED] Wi-Fi MAC Address changing every time wifi goes off/on or with reboot

A brief history of what I've been through before this issue:
My Pro came with 2.2 Froyo from verizon, then flashed Vanilla's CM7 v8 (which is the absolute best ROM I've tested for this phone); no wifi mac address problem here. Then I messed up by installing another recovery, semi-bricked, and forced to SBF to stock Verizon 2.3.3 gingerbread. Then rooted with Pete's Motorola Root Tools, flashed recovery, kernel, wiped, and once again to Vanilla's CM7 v8.
After all this mess, my Wi-Fi MAC address is changing every time wifi goes off/on or reboot, and this is pretty inconvinient for me since both my workplace and home networks have MAC address filter, and changing the router configuration every time I'm forced to reboot my phone is not an option.
YES, I've flashed the Kernel that the developer provides with the ROM.
YES, I've tried reflashing both the rom and the kernel the way the diveloper suggests, doing system/data/cache wipes in between.
NO, this was not happening the first time I've flashed this ROM.
Any suggestions?
Please help!!
SOLVED READ BELOW!

Fix found
Here's the MAC address fix for your Pros running CM7. If you have had an issue connecting to wifi, it's probably because each time the device's wifi is restarted, a new MAC address is generated which will clog up your router as you can easily run out of IP addresses to lease to each and every new MAC address that's generated each time your device's wifi is restarted. The link can be downloaded here. The instructions are simple:
1. Flash CM7MAC.zip (attached) in clockwork no need to wipe anything
2. "Activate it" by going into the terminal emulator app, typing "su" (without the quotes) then typing "mac-address-fix.sh" (without the quotes). A bunch of weird symbols should come up, but that's normal.
What this does is it auto-generates and writes your permanent MAC address to a file called called nvs_map.bin under /data/misc/wifi/nvs_map.bin. It will remain there and your MAC address will remain the same unless you wipe your /data whereas you will simply have to redo it
Note: if you get an error message in the terminal after doing the fix, make sure your Wi-Fi is turned on and you're connected to a network
For CM7, download -->

hi!
my phone does the same, each time WIFI is turned on it generates a temporary MAC address, but the file you mentioned (nvs_map.bin) can't be found in /data/misc/wifi...
could you help me please how the map_gen file is generated? i don't have CWM so i can't flash the zip file, but i have a terminal and two hands
thx

Do we have anything for Android 4.2?

negro_acdc said:
Here's the MAC address fix for your Pros running CM7. If you have had an issue connecting to wifi, it's probably because each time the device's wifi is restarted, a new MAC address is generated which will clog up your router as you can easily run out of IP addresses to lease to each and every new MAC address that's generated each time your device's wifi is restarted. The link can be downloaded here. The instructions are simple:
1. Flash CM7MAC.zip (attached) in clockwork no need to wipe anything
2. "Activate it" by going into the terminal emulator app, typing "su" (without the quotes) then typing "mac-address-fix.sh" (without the quotes). A bunch of weird symbols should come up, but that's normal.
What this does is it auto-generates and writes your permanent MAC address to a file called called nvs_map.bin under /data/misc/wifi/nvs_map.bin. It will remain there and your MAC address will remain the same unless you wipe your /data whereas you will simply have to redo it
Note: if you get an error message in the terminal after doing the fix, make sure your Wi-Fi is turned on and you're connected to a network
For CM7, download -->
Click to expand...
Click to collapse
Note: if you get an error message in the terminal after doing the fix, make sure your Wi-Fi is turned on and you're connected to a network
** How can I turn on Wi-Fi when there's no mac-address? No mac-address, no network! **​

Hi,
I tried running this shell script but seems like its not executed successfully ... reason i believe so is ...
1. i dont see any wierd symbols coming up ... just a pause for a couple of seconds.
2. i dont see the "/data/misc/wifi/nvs_map.bin' file in the said location.
Please help.
thnx

Mac addrs and imei problm
Hi, in my gionee ctrl v4s the problem is two types, i have seen after i was updated lollipop , one problem is tht, whn i reboot my phn thn my mac address automatically changed everytime.. And 2nt problem is tht my imei also erased whn i updated lollipop so plz help me...

this is the best solution
https://www.youtube.com/watch?v=8ejnFB5i5o8

Is there a solution for this in Marshmallow?

yes this is the best solution
Thanks. This process worked well on my lenovo s650 cyanogenmod 13 custom rom. But could someone explain what is really happening through this solution?

my oppo f1s 64gb, it was dead, recovered working fine, but each restart it changes mac id, and remove all wifi stored connections
is there any solutions?

Seems its pretty common for MediaTek chipsets.
Thanks for the video link!

{ISSUE FIXED} Lenovo IdeaTab A3000-H IMEI Problem

Dear Friends, I have Flashed the latest " A3000_A422_000_006_130517_WW_CALL " Firmware. Now My Tab is Not Showing any IMEI numbers. When i check through *#06# the imei display dialog box Both IMEI Fields showing INVALID IMEI. Also I cannot Make Calls or Send SMS messages when i am in 3G/HSDPA mode. If i try to make a call it will automatically Disconnects right away i dial the number. But if i switch to 2G mode, then it will allow me to call. Then i tried other Lenovo Firmwares also. But still the same IMEI and calling Problems there with the all Firmwares. I think something Badly Happened to My Tab. Please Help me to Fix It. Pictures attached. thanks.
EDIT : IMEI ISSUE FIXED on 28th OCTOBER 2013
Video Tutorial by Me..

azam426 said:
Dear Friends, I have Flashed the latest " A3000_A422_000_006_130517_WW_CALL " Firmware. Now My Tab is Not Showing any IMEI numbers. When i check through *#06# the imei display dialog box Both IMEI Fields showing INVALID IMEI. Also I cannot Make Calls or Send SMS messages when i am in 3G/HSDPA mode. If i try to make a call it will automatically Disconnects right away i dial the number. But if i switch to 2G mode, then it will allow me to call. Then i tried other Lenovo Firmwares also. But still the same IMEI and calling Problems there with the all Firmwares. I think something Badly Happened to My Tab. Please Help me to Fix It. Pictures attached. thanks.
Click to expand...
Click to collapse
I also downloaded this software and it works well with me?
Be sure that your tablet is A3000-H and not A3000-F

agsao said:
I also downloaded this software and it works well with me?
Be sure that your tablet is A3000-H and not A3000-F
Click to expand...
Click to collapse
I hit the Format option in flash tool..
So it formatted the NVRAM folder..
nvram is the folder contains imei, wifi and related data.
that was an accident. now am searching for a fix..

azam426 said:
I hit the Format option in flash tool..
So it formatted the NVRAM folder..
nvram is the folder contains imei, wifi and related data.
that was an accident. now am searching for a fix..
Click to expand...
Click to collapse
it is very important issue.
please help us if you can to solve IMEI related problems.
is any "nvram" folder for each users special to him or not?

have fixed your issue ? if not then i can solve your problem it happened with my phone i was able to restore it.

【qzsu0420】发一个写IMEI工具，手机串号丢失可以试试！！收藏备用-联想A3000论坛-ZOL中关村在线
http://padbbs.zol.com.cn/2/118_10878.html look at this！

Like bnbhaohao90 said
use imei.exe via cmd
Code:
imei.exe imei_sim1 imei_sim2
replace imei_sim1 and imei_sim2 to your imei
you will get file "MP0B_001_NEW"
rename to "MP0B_001"
then copy it to /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
then chown and chmod
via adb
Code:
adb.exe shell "su -c 'chmod 660 /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001'"
adb.exe shell "su -c 'chown nvram.nvram /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001'"
OR via terminal
Code:
su
chmod 660 /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
chown nvram.nvram /data/nvram/md/NVRAM/NVD_IMEI/MP0B_001
Edit: Sorry I did not see the date of this forum

IMEI Issue fixed..
thanks for your support guyz..
See 1st Post for More info..

Plz Heeeeeeeeeeelp !!!
When i flashed this firmware .. not complete ... appear error ... My tab doesn't open !! .. what can i do ?????

khaled_2006579 said:
When i flashed this firmware .. not complete ... appear error ... My tab doesn't open !! .. what can i do ?????
Click to expand...
Click to collapse
try to reflash it, my tablet is a1000f, so i used a program made by the devs in lenovo forums to fix it, try searching for [your lenovo device] fix tool in google, it shoukd boot up

i have aproblem i lost my imei and install the software but
i have aproblem i lost my imei and install the software but my lenovo dident detected what i do
thanks

hello
any one upload nvdata backup file for me please...
i formated my A3000 and now stoped on a screen that im not saw this yet...
http://www.mediafire.com/view/isxszwfdnw0yj9l/DSC_0010_1470353373341%5B1%5D.jpg

imei:certi fail

I have a new SM-N900
AP:N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI5
MAIN BAND : N900XXUBMI2
BUILT NO : JSS15.JN900OZSUBMI5
KERNEL : 3.4.39-1624790 [email protected] # 1
The problem is it founds network with a ! eclamation on network.Can't get calls or net connection.
All others are working.
when hit *#0011# it says "IMEI : CERTI.FAIL"
i'm not sure if it's a EFS problem.
Is there any solution ?

daraza said:
I have a new SM-N900
AP:N900ZSUBMI5
CP:N900XXUBMI2
CSC:N900OZSBMI5
MAIN BAND : N900XXUBMI2
BUILT NO : JSS15.JN900OZSUBMI5
KERNEL : 3.4.39-1624790 [email protected] # 1
The problem is it founds network with a ! eclamation on network.Can't get calls or net connection.
All others are working.
when hit *#0011# it says "IMEI : CERTI.FAIL"
i'm not sure if it's a EFS problem.
Is there any solution ?
Click to expand...
Click to collapse
EFS is signed. if it fails its check it give the same symptoms you have id lean towards efs failure

gazeddy said:
EFS is signed. if it fails its check it give the same symptoms you have id lean towards efs failure
Click to expand...
Click to collapse
Can you please explain a bit ? Didn't get it properly...
I tried install a rom with Odin but it failed at setup.img.
Maybe i didn't find the original rom.
A help will be very useful.
Thank you.

daraza said:
Can you please explain a bit ? Didn't get it properly...
I tried install a rom with Odin but it failed at setup.img.
Maybe i didn't find the original rom.
A help will be very useful.
Thank you.
Click to expand...
Click to collapse
The efs contents are signed if the contents change the signature is broken. think of a seal on bottle of drink once opened its no longer "sealed" and the contents may not be what you expect. this either causes bootloop or no network as the phone ignores the details

gazeddy said:
The efs contents are signed if the contents change the signature is broken. think of a seal on bottle of drink once opened its no longer "sealed" and the contents may not be what you expect. this either causes bootloop or no network as the phone ignores the details
Click to expand...
Click to collapse
if i understand correctly i can not save the phone back ?
or is it possible to get it saved via installing a new rom or official rom once ?

daraza said:
if i understand correctly i can not save the phone back ?
or is it possible to get it saved via installing a new rom or official rom once ?
Click to expand...
Click to collapse
id say chances are your only option is to try an official rom

why should i have such a problem on a new phone ? any cause you think ?

Changing MAC ID

Can someone help me to change my phone's mac id.i hav kitkat ROM.
Plz give detailed steps as I am new to these things.
(Phone rooted)

Abhimanyu_1997 said:
Can someone help me to change my phone's mac id.i hav kitkat ROM.
Plz give detailed steps as I am new to these things.
(Phone rooted)
Click to expand...
Click to collapse
For permanent change, go here.
For temporary change, go here.
Temporary change is easy to do, but MAC id will change once you switch wifi on/off or reboot.
Permanent change, might work or not depending on the kernel, and is surely a complicated process.
So the choice is yours

use Pry-fy
Abhimanyu_1997 said:
Can someone help me to change my phone's mac id.i hav kitkat ROM.
Plz give detailed steps as I am new to these things.
(Phone rooted)
Click to expand...
Click to collapse
you can use app like pry-fy. download it from pay store.

Changing mac id to specific one
gks131 said:
you can use app like pry-fy. download it from pay store.
Click to expand...
Click to collapse
Sry for late reply........Actually i want to change mac id to access a mac is filter network....so i need to change it to a specific mac id(I hav mac id with access to the network)....

Abhimanyu_1997 said:
Can someone help me to change my phone's mac id.i hav kitkat ROM.
Plz give detailed steps as I am new to these things.
(Phone rooted)
Click to expand...
Click to collapse
Detailed Procedure which i found working on my device ( Lenovo A 6000 + )after lots of attempts. Hope it helps someone.
1. Take backup of all data.( Incase of data loss, which i haven't experieced with expeerience of araound 20 times rooting)
2. Root your phone using kingoroot (via PC ) (my preference --you can root any way you want )
3. Check root sataus using root checker app (Its in playstore )
4. Make sure you have Super User (App which guarantees root access) .Its is installed automatically when rooted via Kingoroot software.(Or install it from playstore)
6. Install ESFile Explorer from playstore (again its my preference,you can use any root explorer )
7. Enable root explorer option in ES File Explorer(Grant root access when asked)
8. Directory to change mac id
Device -> sys -> devices -> soc.0 -> a000000.qcom,wcnss -> wcnss_mac_addr.
9.Open the file in ES Note Editor and change the mac to whichever you want.
10. Switch on aeroplane mode and off it.(Then only mac id changes).
Note:-
1. Mac ID is reset when resetted .(Switching wifi on and off doesn't affect)
2. The above procedure works in stock ROM (lollipop and kitkat )
Plz reply if any probs...I figured it out after too many attempts as i am quite new to these things.

EFS Recovery Guide [Snapdragon only]

This guide is for those who have lost their IMEI, have corrupted EFS, or erased EFS partition. So, follow these under your own risk, it may or may not work, and if something happens or doesn't happen, then i am not to blame. So, once again i will not take credit for bricked phones or something along those lines, however i will take full credit if this works for you. I will also provide assistance to those who could not restore their EFS following this guide.
Before proceeding with this guide, backup what you have left. Use twrp to backup and in case something goes wrong and your problem escalates, you can restore using twrp backup.
Restore EFS
Change IMEI Number

Restore EFS
Do this if and only if you believe your EFS is corrupted, or you somehow erased it. If you are not sure about it, then simply follow the next guide to change you IMEI number. In most cases people loose their IMEI only and not the whole partition. Again, it may or may not work, so do this on your risk, and i am not to blame if anything bad happens, but if you do succeed, then don't forget to give me credit.
Note:
If your EFS is erased or corrupted, your IMEI and Baseband will be shown as unknown. In this case recover the EFS following this post, and then change the IMEI following the next post. If your IMEI is shown as 0, then you EFS is safe and most probably your IMEI is gone. In that case, no need to recover EFS, only change the IMEI number following my next post.
In TWRP, backup of kate wont show on kenzo and the backup up kenzo wont show on kate. In case no backup is shown even if you are using the right device, then try the dump flashing method or try changing the TWRP recovery.
Flashing this will only restore your EFS partition, but the IMEI will still be gone, so you will have to follow the next guide to change your IMEI.
Even after flashing a new EFS, you Mac and BT address will not recovery. The android system will assign a software generated address to both devices. Dont worry cause even without the EFS partition there will be a Mac and BT address assigned to your device and both the things will work normally.
If your Baseband is still unknown, even after flashing a new EFS, then try flashing latest radio file. It can be found in any firmware update package, either the official or the one from the strix.
1. Download the required files from the link given below.
EFS Backup[Kenzo] - Contact me if someone has backup of this.
EFS Backup[Kate] - Contact me if someone has backup of this.
2. Extract the Dump Backup files and flash them using the following commands.
Code:
fastboot flash modemst1 modemst1
fastboot flash modemst2 modemst2
3. Now reboot and voila you have you a new EFS partition at your disposal.

Change IMEI Number
Requirements:
Root
USB Debugging is turn on
Windows Driver Signature is turned off
ADB and Fastboot Binary Files
Latest MiFlash Installed for the latest drivers
1. Connect your device to pc and open the adb folder. Then open a command promt window.
Code:
>> [B]Shift + Right Click[/B] anywhere in the adb folder
>> Click on [B]Open Command Window Here[/B]
2. Type the following command to enable Diagnostics mode. Allow debugging if asked.
Code:
adb shell
su
setprop sys.usb.config diag,adb
4. Download the IMEI Changer from the link given below.
IMEI Changer [Credit: Archeolot]
5. Now, open the imei changer, and enter imei number in both the fields. And click on start. After a moment it will show as passed. If it fails make sure that you have followed the points i stated.
Note: Make sure that the driver in driver management under ports is listed as "Qualcom HS-USB Android DIAG 901D" and not as "Marshall London HS-USB Android DIAG 901D". If it is listed in any other name, then go to driver management and update driver. Select browse driver, then let me pick driver from a list. Then select "Qualcom HS-USB Android DIAG 901D" and then finish.

WOW.. Thanks mate..
It's gonna very Helpful for me & other ppl.. ??
Sent from my Redmi Note 3 using Tapatalk

didn't work..
showing error as no diag even after typing those commands
kindly help me

nuk.nama said:
showing error as no diag even after typing those commands
kindly help me
Click to expand...
Click to collapse
At what part, the imei change or flashing.

The simplest, and the fastest guide to restoring EFS and IMEI! I haven't backed up my EFS and this revived my phone! Much apprecieated!

Broski32 said:
The simplest, and the fastest guide to restoring EFS and IMEI! I haven't backed up my EFS and this revived my phone! Much apprecieated!
Click to expand...
Click to collapse
Glad i could help mate. Can you confirm your mac address and bluetooth address, whether it is same or changed.

archit.bajpai.ab said:
Glad i could help mate. Can you confirm your mac address and bluetooth address, whether it is same or changed.
Click to expand...
Click to collapse
Can't confirm. My EFS partition was so corrupted from trying other tutorials to restore my IMEI that I didn't even bother backing it up because I thought that it could have been changed already (tried writing to NVRAM with QPST). Since I don't have my original mac and bluetooth addresses written down anywhere (I haven't written them down myself and I don't think they are to be found anywhere on the box or on the phone) I think the only way to check it would be to compare my current addresses on the phone to the addresses contained in your EFS backup. Can you extract them so I can check if they match or not?

Broski32 said:
Can't confirm. My EFS partition was so corrupted from trying other tutorials to restore my IMEI that I didn't even bother backing it up because I thought that it could have been changed already (tried writing to NVRAM with QPST). Since I don't have my original mac and bluetooth addresses written down anywhere (I haven't written them down myself and I don't think they are to be found anywhere on the box or on the phone) I think the only way to check it would be to compare my current addresses on the phone to the addresses contained in your EFS backup. Can you extract them so I can check if they match or not?
Click to expand...
Click to collapse
The mac address and bluetooth address in the efs are my own. I only changed the imei so that no one else can copy it, i didnt know anyway to change mac address. Besides the mac address doesnt matter that much, and i dont think that we will ever be on the same wifi network.
If you dont know then i can explain, that the mac address is required to maintain switches and broadcast in the router, so it technically does not matter.
You can change it later with some apps or use it like that if you wish, if i find any way to restore you mac i will post it too. In the mean time just post a snapshot of wifi mac and bluetooth address so that i can compare them with my own.

So, using this way, one can change the IMEI no. also?

mGforCe said:
So, using this way, one can change the IMEI no. also?
Click to expand...
Click to collapse
Yes, just use the imei changer in the rar file to change your imei. But make sure to backup or atleast note down your imei before doing so.

archit.bajpai.ab said:
The mac address and bluetooth address in the efs are my own. I only changed the imei so that no one else can copy it, i didnt know anyway to change mac address. Besides the mac address doesnt matter that much, and i dont think that we will ever be on the same wifi network.
If you dont know then i can explain, that the mac address is required to maintain switches and broadcast in the router, so it technically does not matter.
You can change it later with some apps or use it like that if you wish, if i find any way to restore you mac i will post it too. In the mean time just post a snapshot of wifi mac and bluetooth address so that i can compare them with my own.
Click to expand...
Click to collapse
Current addresses on my phone:
MAC - 00:0a:f5:a9:XX:XX
Bluetooth - 7C:7F:F0:82:XX:XX
Left out some numbers just in case they are mine. For the purpose of checking that will still be enough

Broski32 said:
Current addresses on my phone:
MAC - 00:0a:f5:a9:XX:XX
Bluetooth - 7C:7F:F0:82:XX:XX
Left out some numbers just in case they are mine. For the purpose of checking that will still be enough
Click to expand...
Click to collapse
Yup, they are not mine. Mine start with 64:cc and so on for both mac and bluetooth. They may be software generated or may be your own, technically i am not sure.
Edit: did you use imei changer to change imei no. Or are you using the default values. If you are using the default values, pls post them too. If you change them, then give your review, ie was it hard or easy, did you encointer any problem, stuff like that.

archit.bajpai.ab said:
Yup, they are not mine. Mine start with 64:cc and so on for both mac and bluetooth. They may be software generated or may be your own, technically i am not sure.
Edit: did you use imei changer to change imei no. Or are you using the default values. If you are using the default values, pls post them too. If you change them, then give your review, ie was it hard or easy, did you encointer any problem, stuff like that.
Click to expand...
Click to collapse
After flashing your EFS backup both IMEI values were set to "0". On the default values I don't think the phone would be able to register on any network with the sim inside, but I haven't tried that. Then I flashed my IMEI with the app you provided in the .rar. Set my IMEI same for both slots because I've got only one written down on the box so I think it is set how it should be out of the box. After that I've rebooted to EDL and flashed global developer rom. And it's all working, I'm able to make calls from both sim slots, however didn't try having 2 sims inside.
All in all the process is very easy, definitely the easiest out there. I haven't encountered any problems, however I think others may have a problem with drivers to get "Qualcom HS-USB Android DIAG 901D" working. Mine was working already because I tried this tutorial before. Thank you for this guide, and providing your backup

Broski32 said:
After flashing your EFS backup both IMEI values were set to "0". On the default values I don't think the phone would be able to register on any network with the sim inside, but I haven't tried that. Then I flashed my IMEI with the app you provided in the .rar. Set my IMEI same for both slots because I've got only one written down on the box so I think it is set how it should be out of the box. After that I've rebooted to EDL and flashed global developer rom. And it's all working, I'm able to make calls from both sim slots, however didn't try having 2 sims inside.
All in all the process is very easy, definitely the easiest out there. I haven't encountered any problems, however I think others may have a problem with drivers to get "Qualcom HS-USB Android DIAG 901D" working. Mine was working already because I tried this tutorial before. Thank you for this guide, and providing your backup
Click to expand...
Click to collapse
Enjoy your revived phone buddy.

Thanks buddy!!!!! you saved my phone

pandyajoe said:
Thanks buddy!!!!! you saved my phone
Click to expand...
Click to collapse
It do what i can do buddy...

Guys. I messed up my phone by restoring a nandroid backup from a different one.
I was able to restore my IMEI using some qualcomm tools. My problem now is that fingerprint scanner won't work on any rom, even official.
Any idea what else I have messed Up? I don't think restoring this efs will fix my fingerprint scanner. Is fingerprint scanner info in a different partition?

chr0m said:
Guys. I messed up my phone by restoring a nandroid backup from a different one.
I was able to restore my IMEI using some qualcomm tools. My problem now is that fingerprint scanner won't work on any rom, even official.
Any idea what else I have messed Up? I don't think restoring this efs will fix my fingerprint scanner. Is fingerprint scanner info in a different partition?
Click to expand...
Click to collapse
Have you checked with miui7 stock rom. As far as i know there are three sensor modules for fingerprint, on of them is goodfix which is currently not supported by many roms. If your is goodfix then it will not be supported too. You can flash miui rom to check whether the fingerprint works or not...
If it doesnot work, then try to resotre your nandroid backup agaian. This tym simply untick efs.