Flashes a custom rom image for chromebox firmware on chrome devices

flash_chromebox.sh

#!/bin/sh
set -e

# Colors
C='\033[0;36m' # Cyan
Y='\033[1;33m' # Yellow  
R='\033[0;31m' # Red
NC='\033[0m'   # No Color

# Downloading flashrom
echo "${C}Downloading flashrom...${NC}"
wget -O flashrom.tar.gz https://mrchromebox.tech/files/util/flashrom_ups_libpci37_20240418.tar.gz && tar -zxf flashrom.tar.gz && chmod +x flashrom

# Downloading cbfstool
echo "${C}Downloading cbfstool...${NC}"
wget https://mrchromebox.tech/files/util/cbfstool.tar.gz && tar -zxf cbfstool.tar.gz && chmod +x cbfstool

# Downloading gbb utility
echo "${C}Downloading gbb utility...${NC}"
wget https://mrchromebox.tech/files/util/gbb_utility.tar.gz && tar -zxf gbb_utility.tar.gz && chmod +x gbb_utility

# Backing up current firmware
echo "${Y}Backing up current firmware...${NC}"
sudo ./flashrom -p internal -r backup.rom

# Extracting VPD from backup
echo "${Y}Extracting VPD from backup...${NC}"
./cbfstool backup.rom read -r RO_VPD -f vpd.bin

# Injecting VPD into coreboot
echo "${Y}Injecting VPD into coreboot.rom...${NC}"
./cbfstool coreboot.rom write -r RO_VPD -f vpd.bin

# Extracting and injecting HWID
echo "${Y}Extracting HWID...${NC}"
./gbb_utility backup.rom --get --hwid > hwid.txt
./cbfstool coreboot.rom add -n hwid -f hwid.txt -t raw

# Flashing firmware
echo "${R}Flashing firmware - DO NOT POWER OFF!${NC}"
sudo ./flashrom -p internal --ifd -i bios -w coreboot.rom -N