On Fri, May 25, 2018 9:32 am, Mike Banon wrote:
Directly flashing the SPI chip maybe be dangerous since the EC can interfere unless the SPI chip is desoldered.
EC will not interfere if the board will be powered off, and you could directly flash a SPI chip without desoldering by attaching a test clip to it (which is connected to a flashrom-supported programmer like a cheap CH341A). Examples of the instruction: https://www.flashrom.org/ISP , http://dangerousprototypes.com/docs/Flashing_a_BIOS_chip_with_Bus_Pirate (for CH341A its the same, just a connection scheme and flashrom commands are a little bit different)
FWIW, I had a cheap board without any power isolation and an SPI chip shared between EC and ME, and supplying power to the in-situ chip was enough to power up EC. That blocked me from doing anything useful. It's still on my pile to attempt to desolder some day and try again!