[Q] Change BT Mac Addr on CM9 - TouchPad Q&A, Help & Troubleshooting

I'd like to change the bluetooth mac address of my TP to match my phone so I don't need to keep repairing my sixaxis.
I've been all over google for hours, have found commands for changing the BT mac in CM7, and I have found /data/misc/bluetoothd folder with another folder under it with the mac address, I have also tried creating nvmac-bt.info under /data/ with the new mac, nothing seems to work.
Any ideas? Thanks in advance.

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How to spoof captivate MAC address?

Does anyone know how to spoof the MAC address on a Captivate. I can't seem to find the nvram.txt file anywhere, or if there is another way I would appreciate it. Thanks.
Why would you?
Cuz im testing my network at home, and I want to see if it shows my new MAC address.
Only thing I can think of is enabling mock locations in development, but i'm not sure if that involves MAC addresses.

Can't find proper bluetooth address

I'm running CyanogenMod on a CDMA verizon Galaxy Tab 7. Bluetooth tethering is not working correctly, and it seems to be because hci0 has a bluetooth MAC address of "43:29:B0:00:00:00". This seems to be a generic bt address used when it can't find the address of the device, and this address causes problems for networking.
According to the /init.rc, the bluetooth address should be read from "/efs/bluetooth/bt_addr":
setprop ro.bt.bdaddr_path "/efs/bluetooth/bt_addr"
But I don't have an /efs directory and I can't find any files under /sys that contain the hardware address.
Does anyone have a correct bluetooth address (run "hciconfig" from the shell to show it) and if so can you tell me where the ro.bt.bdaddr_path in /init.rc points to?
I have the same problem from ICS AOKP 29, milestone 5, and also with Team nightlys.
Has anyone a solution for this?
Why is changing the BT mac adress?

Problem with mac address

Anyone know how to edit or force android to read the mac address of the phone?
Because my brother has a optimus black like me with rom Macay and i have cyanogemmod and we both have the same mac address.
comands like: ip link set..... our ifconfig....
don´t work.
and the software don´t work:
Wireless Mac Changer
The mac addres is associated with your net adapter, meaning its (or should be) unique and exclusive.
In theory, two devices cant have the same mac address. Furthermore, in most countries, its illegal to change the mac of a device, and it must be done by modding the hardware.
Are you sure your router isnt giving the same IP to both phones? That could be a possible error.
It is easy to change it:
Search nvram.txt (should be in /etc/wifi/ or something) and set permissions that you can edit it. Edit "macaddr=XX:XX:XX:XX:XX:XX" as you want and save. After it set permissions to default (note down before edit) and reboot. Done!

[GUIDE] Wi-Fi MAC address changing

Hello everybody!
This is my first contribution for the O4X community. Hope you like it!
I have managed to change the Wi-Fi MAC address of my device and now I share this technique with you.
What is a MAC address?
A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. It may also be known as a burned-in address, an Ethernet hardware address (EHA), hardware address or physical address. (Source: Wikipedia)
Why would somebody change his/her MAC address?
- To access the internet where it is restricted to particular addresses.
- To hide his/her illegal activity. (Though this is not effective enough since the Android system sends product information and a lot of other things to the Google servers and I'm sure that previous IP addresses could be searched for if somebody does something really nasty.)
Is it legal to change the MAC address?
As far as I know, it is. However, I firmly discourage you on doing anything illegal with changed/unchanged MAC.
Let's do it!
What do you need?
- A rooted device.
- A file manager that can explore the root filesystem.
How does this exactly work?
Normally, the Wi-Fi driver gets the MAC address from the built-in chip then it writes the address to '/data/misc/wifi/config_mac'. This is done at a very early stage at bootup, I didn't check when, probably in native binaries or somewhere at the framework (though I doubt the latter). This is the original burned-in address. This cannot be changed with software modifications, but only by soldering off the chip from the motherboard and rewriting its contents. Our Wi-Fi device is a Broadcom BCM4330. It has very good built-in features and the open source driver can be found in our kernel sources. So what you have to do is editing the '/data/misc/wifi/config_mac' file with a modified address.
Before you change your MAC address in any way, turn off Wi-Fi! I recommend writing down your original address somewhere (just to be extra secured).
- If you delete the file or use an invalid one (e.g. 000000000000, ffffffffffff or 133713371337), Wi-Fi will stuck at turning on and you need to do a reboot to get it working again.
- Since the file is created everytime again at boot, it is not persistent. If you reboot, it is gone. If you would like to use it permanently, create a script (like 'echo "001122334455" > /data/misc/wifi/config_mac') with some script manager application and set it to run at each reboot.
I did not test this on CM. Since CM has the Wi-Fi module built into the kernel (Anybody knows why??), it may not work. Somebody pls try and report.
Every custom modification to devices have risks. Use this at your own risk!
Have fun and enjoy!
Hi, thanks for the support
I would like to say that I have managed to change the mac adress on the Cyanogenmod (cm10.1) by editing a file called "bcmdhd.cal", which is located in system/etc/wifi; the line is for example
macaddr=00:90:4c:c5:12:38
Click to expand...
Click to collapse
I only change the "38" with "39".
I have to edit it before installing the rom (every time I install the rom, I must say ), because my sister has another 4X, and with the same mac adress the router goes crazy
Thanks for pointing it out. :good:
Does the bcmdhd.cal editing change the MAC persistently? I assume it does.
Sent from my LG-P880
Adam77Root said:
Thanks for pointing it out. :good:
Does the bcmdhd.cal editing change the MAC persistently? I assume it does.
Sent from my LG-P880
Click to expand...
Click to collapse
yes, i change it in the zip, then after the install the wifi menu reports the new adress.
EDIT.... i found that my trick worked on the first nightlies of the cm10.1; your way does work on the stable cyanogen and last nightly
sorry for my english...
I just use MAC Address Ghost from the play store
arx-7-arbalest said:
Hi, thanks for the support
I would like to say that I have managed to change the mac adress on the Cyanogenmod (cm10.1) by editing a file called "bcmdhd.cal", which is located in system/etc/wifi; the line is for example
I only change the "38" with "39".
I have to edit it before installing the rom (every time I install the rom, I must say ), because my sister has another 4X, and with the same mac adress the router goes crazy
Click to expand...
Click to collapse
I know this is an old thread, but this post of yours just solved a problem I've been having for months.

How can I change my Mac Address? (REDMI 8)

Everytime I used any mac address changer it just revert back to normal/can't change. Does someone know to change it?
1) I don't know if there is a way, you can Google it
2) why would you even want that??
Zêlgréz said:
Everytime I used any mac address changer it just revert back to normal/can't change. Does someone know to change it?
Click to expand...
Click to collapse
MAC address = Media Access Control address
Kind of physical address of your device.
This unique address is given by the manufacturer who got a special address range/area from the IEEE (Institute of Electrical and Electronics Engineers).
So it is something a user should not be able to change.
Maybe you mixed it up with a different type of address

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