#Normal os to bootloader

adb -d reboot bootloader
fastboot devices

#Flash LinageOS

fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash init_boot init_boot.img
fastboot flash vendor_boot vendor_boot.img
fastboot flash recovery recovery.img
adb -d sideload filename.zip

#Add ons (google apps)
#click yes on signature fail for only addons
#Click Apply Update, then Apply from ADB, then adb -d sideload filename.zip for all desired packages in sequence.
#When presented with a screen that says Signature verification failed, click Yes. It is expected as add-ons aren’t signed with LineageOS’s official key!

adb -d sideload MindTheGapps-14.0.0-arm64-20240612_135921.zip