[Aastra MAC ADDRESS Error]

Find that if I install any firmware version 3 my phone changes the MAC Address in the settings of the phone. Version 2.6.0.2019 works fine.

[Aastra MAC ADDRESS Error]

If you can help me I appreciate it

[Aastra MAC ADDRESS Error]

Hi, sorry but I consider it too risky to send you what you request.

[Aastra MAC ADDRESS Error]

I have some aastra 6731i that stop working. After reviewing and reinstalling the firmware, I look that the cellphone have a different MAC ADDRESS. Other than the sticker attached to the phone below. How can I change this MAC ADDRESS or how can I fix these phones error