https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 19 Apr 2026 09:34:31 +0000 Thu, 27 May 2021 18:37:07 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=18967 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=18967&PID=87397&title=b450m-pro4f-spi-flash-header-j1#87397 Author: pc2005
Subject: 18967
Posted: 27 May 2021 at 6:37pm

Hello, I've recently got a new B450M Pro4-F board with Ryzen 3600. I'm planning to upgrade to more powerful ryzen in the future and eventually to install coreboot when it gets Ryzen support.

Because of this I will probably need to reflash BIOS often. I've found there is SPI flash chip related header "J1" on the board (9 pin, next to the chip). Can I get pinout of this header? I was able to measure 8 pins which go straight to the chip, but there is 1 more, which seems to be connected to ground via 17 ohm resistance. Is this pin necessary for the operation?

J1 header location]]> Thu, 27 May 2021 18:37:07 +0000 https://forum.asrock.com/forum_posts.asp?TID=18967&PID=87397&title=b450m-pro4f-spi-flash-header-j1#87397