There appears to be new support for A/B partitions in the bootloader that might help: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#tryb

There appears to be new support for A/B partitions in the bootloader that might help: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#tryboot_a_b-mode https://www.raspberrypi.com/documentation/computers/raspberr... and https://www.raspberrypi.com/documentation/computers/config_txt.html#example-update-flow-for-ab-booting https://www.raspberrypi.com/documentation/computers/config_t...