I'd like to get magisk running on my Caterpillar Cat S42. Since there are no stock ROMs floating around, and no official TWRP builds, I need to extract the boot image somehow - both for magisk, and to have a backup in case things go sideways. Since the S42 is an A/B device, it will not have a separate recovery image, but a boot image that also takes over the recovery functions, if I understand correctly.
However, this feels like a chicken-or-egg problem - I don't dare install a self-build TWRP image over the boot image without the ability to recover in case TWRP won't load system. But I can't extract a stock boot.img without a custom recovery*, and I can't get magisk running for root acces
