Is it possible to flash the EEPROM chip(s) that hold MAC addresses?

[chrstrbrts]

Hello,

This is a networking related programming question, and I'm not sure if this is the right place for it. If anything, the mods will move it.

Anyway, as you know it's pretty easy to change the MAC address for network devices such as wifi transceivers, ethernet NICs, etc.

But, this change is superficial; it exists at the OS / software level only.

The "real" address is burned into an EEPROM chip (similar to the BIOS firmware chips I presume) located somewhere on the device.

Is it possible to flash that EEPROM chip and permanently change the address stored there just like you can flash the BIOS and change (possibly bricking your box) the motherboard firmware?

Thanks.

Moved to networking for lack of response in Programming -- Programming Moderator Ken g6

 

[chrstrbrts]

Any thoughts, guys?

 

[chrstrbrts]

Guess not....

 

[Fardringle]

Possible? Sometimes, maybe, with the right equipment?
Feasible? Nope.
Legal? Probably not.
Useful? Highly unlikely, and could cause problems if you changed it to use a legitimate address already assigned to another device.

 

[Elixer]

Of course it is possible, how do you think they got it there in the first place?
In fact, it is pretty darn easy once you acquire the correct tools.

 

[chrstrbrts]

Of course it is possible, how do you think they got it there in the first place?
In fact, it is pretty darn easy once you acquire the correct tools.

Can you tell me what tools I need to work with Realtek, Broadcom, and Intel devices?

Thanks.

 

[JackMDS]

It is OK to discuses issues like this. It is Not OK to give specific instructions.

Thread Closed.