From https://grapheneos.org/releases#cheetah-stable cheetah-factory-2024010400.zip

The included flash-all.sh contains this, which looks like a cut and paste error:

fastboot flash --slot=other bootloader bootloader-cheetah-cloudripper-14.0-10825040.img
fastboot --set-active=other
fastboot reboot-bootloader
sleep 5
fastboot flash --slot=other bootloader bootloader-cheetah-cloudripper-14.0-10825040.img
fastboot --set-active=other
fastboot reboot-bootloader
sleep 5

    studog That's not an error. It's to flash the firmware to the inactive slot, set it as the active slot, reboot into it, then repeat to get up-to-date firmware on both slots. Our web installer does the same thing, but the web installer has proper error handling unlike the standard Android flashing scripts so it's a lot more robust.

      Awesome. The part I missed was this fastboot --set-active=other being a toggle.