From 4811a7683e1f111ca2d2611915b082bd1fe9f080 Mon Sep 17 00:00:00 2001 From: Leah Rowe Date: Wed, 18 Dec 2024 06:16:24 +0000 Subject: [PATCH] note about prepping t480 usb bios updater Signed-off-by: Leah Rowe --- site/docs/install/t480.md | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/site/docs/install/t480.md b/site/docs/install/t480.md index 5ed2250..f0cb737 100644 --- a/site/docs/install/t480.md +++ b/site/docs/install/t480.md @@ -263,8 +263,22 @@ and it can be downloaded here:\ NOTE: T480s (S model) doesn't have EC UART support yet, so it doesn't matter yet which version you update to on the S model.** +Prep a USB stick with it: + + geteltorito -o t480_bios_update.img /path/to/your/downloaded.iso + +Now DD it to the raw USB flash device: + + dd if=t480_bios_update.img of=/dev/sdX bs=4M conv=fsync status=progress + +You must disable SecureBoot, and enable legacy/CSM boot, and boot it in BIOS +mode, not UEFI mode. Make sure your battery is well-charged, and boot it with +a battery and with the power supply plugged in. Select *option 2* in the menu, +to update your BIOS, which also updates the EC firmware. This is the Lenovo +BIOS/UEFI updater. Once you've updated, you can flash Libreboot. + Please ensure also that you've already dealt with the Thunderbolt issue, which -is described above. +is described above. After all of this, you can flash Libreboot. Find videos online of how to disassemble this, and/or find Lenovo's own service manual online. Otherwise, observe: