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How to change your mac address [XT926]

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#1 falk0069

falk0069

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Posted 22 March 2015 - 10:10 AM

In case anyone else out there is looking how to permanent change their mac address on the razr hd, I found the file responsible:

/system/etc/firmware/wlan/prima/WCNSS_qcom_wlan_nv.bin

 

Which is actually a symbolic link to:

/persist/WCNSS_qcom_wlan_nv.bin

 

You need to use a hex editor instead of a text editor to modify it.  The mac address starts at the 11th byte.  All I did was I used ES File Explorer to copy the file to a windows share, edited using a hex editor (XVI32), copied it back using ES File Explorer, and rebooted.

 

hexedit.png

 

Copying and pasting to either location should work.  I did the one in /system not realizing it was a symbolic link and it worked fine and ES File Explorer maintained the link.  However, it probably would be better to modify the one in /persist since that is the real location.

 

Also in case you want to double check, the permissions on the file are 660 (-rw-rw----) and the owner:group is wifi:wifi.  Copying over the top of the existing file kept these settings.

 

Cheers


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