sudo -e '/boot/efi/extraconfig.txt'
# Disable
dtoverlay=disable-bt
dtoverlay=disable-wifi
disable_splash=1

# Tweaks
arm_boost=1
force_turbo=1
over_voltage=15
arm_freq=2100
core_freq=250
max_usb_current=1

# rpi-eeprom-update
dtparam=spi=on
dtoverlay=audremap
dtoverlay=spi-gpio40-45

# End
sudo '/usr/bin/rpi-eeprom-config' -e
[all]
BOOT_UART=0
WAKE_ON_GPIO=0
POWER_OFF_ON_HALT=1
NET_INSTALL_AT_POWER_ON=0
sudo zypper install 'flashrom'
RPI_EEPROM_USE_FLASHROM='1' '/usr/bin/rpi-eeprom-update'