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Philip_w is offline Philip_w
2010-11-05 , 23:19
Posts: 3 | Thanked: 0 times | Joined on Nov 2010
#1
I recently had my N900 replaced under warranty by Nokia (due to the micro USB breaking as seems to be common)

I noticed that the new device has a significantly different MAC address for the Wireless LAN device than my previous N900.

The previous MAC began A8:7B:39: not surprising to see an A8 identifier in a device with an ARM A8 chip.

But the new device has a MAC address beginning 30:38:55:
Has there been a change in the chip used for wireless I wonder?

Anyone have any info on this?
Thanks
 
wmarone is offline wmarone
2010-11-05 , 23:26
Posts: 1,746 | Thanked: 2,100 times | Joined on Sep 2009
#2
Originally Posted by Philip_w View Post
I recently had my N900 replaced under warranty by Nokia (due to the micro USB breaking as seems to be common)

I noticed that the new device has a significantly different MAC address for the Wireless LAN device than my previous N900.

The previous MAC began A8:7B:39: not surprising to see an A8 identifier in a device with an ARM A8 chip.

But the new device has a MAC address beginning 30:38:55:
Has there been a change in the chip used for wireless I wonder?

Anyone have any info on this?
Thanks
No. MAC addresses are assigned on a per-device basis and are not hard-coded into the chip. Both of those are assigned to Nokia, and the A8 in the first one was probably a complete coincidence.
 
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javispedro is offline javispedro
2010-11-05 , 23:42
Posts: 2,355 | Thanked: 5,249 times | Joined on Jan 2009 @ Barcelona
#3
And if the MAC changed the entire device was probably changed.
 

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Philip_w is offline Philip_w
2010-11-05 , 23:46
Posts: 3 | Thanked: 0 times | Joined on Nov 2010
#4
Originally Posted by javispedro View Post
And if the MAC changed the entire device was probably changed.
oh I know the device was changed, I have receipt saying so.

I had assumed (incorrectly it would seem) that the A8:7B:39 identifier was one Nokia and assigned to them for use with their A8 based devices, but as wmarone says just a coincidence.

I also couldnt find any reference the vendor ID for the new MAC, which made me curious.
 
lma is offline lma
2010-11-06 , 00:08
Posts: 2,802 | Thanked: 4,491 times | Joined on Nov 2007
#5
I think the MAC address is stored in the config mtd partition (at least that's how it is on the N8x0s, retrieved by /mnt/initfs/usr/bin/wlan-cal and set via /sys/devices/platform/wlan-omap/cal_mac_address at boot time) so it's theoretically possible, however unlikely, that it's the same device flashed with a new config. It doesn't say anything about the chip in any case.
 
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