Intel Motherboards - Unable to change Mac address with ASrock Mactool

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Unable to change Mac address with ASrock Mactool

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=8001
Printed Date: 03 Aug 2025 at 8:03pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Unable to change Mac address with ASrock Mactool

Posted By: klong123
Subject: Unable to change Mac address with ASrock Mactool
Date Posted: 10 Mar 2018 at 8:08am

I am getting the invalid mac address error but I cannot seem to assign a mac address as every time I receive this error -

Has anyone encountered this before? The error code is status=1 but I cannot seem to find any documentation on what is going on.

The only thing I could find remotely close is this ftp://ftp.tyan.com/Broadcom/LAN/BCM57XX/v7.6.2/DOS/UserDiag/b57diag.pdf on page 111 it mentions "/* ERR_IND_REG_ERR 1 */ "Got 0x%08X @ 0x%08X. Expected 0x%08X"," however, I have no idea what any of this means.

I have also tried using another tool such as TMAC but I am wanting to change the mac address not just spoof it as I am getting the error.

Replies:

Posted By: badbri
Date Posted: 10 Mar 2018 at 11:09am

Did you see this:
https://forums.tweaktown.com/asrock/50936-mac-address-invalid-cmos-flash.html" rel="nofollow - https://forums.tweaktown.com/asrock/50936-mac-address-invalid-cmos-flash.html
after reading it all,
take a second look at post #9 on that page. You might be able to use that info.

Posted By: wardog
Date Posted: 10 Mar 2018 at 11:48am

" rel="nofollow - First, you shouldn't have even dinked with searching the net for a resolution.

Did you receive the flashing file you are using now directly as a result of contacting ASRock?

If not, stop now and contact them.

This phone # to ASRock is Pacific Time, CA, so 3hrs diff from you. Normal business hours.

1-909-590-8308

Had you, as is customary when seeking help, listed what motherboard your are attempting this on I could have helped you tonight.