I use a Pixel 7a with Iodé. Rooting with Magisk worked well. I patched the init_boot.img and flashed the patched img with adb sideload.
(init-boot.img extracted from iode-4.7-20231209-lynx-fastboot.zip → iode-4.7-20231209-lynx-img.zip → )
After the OTA update root got lost so I had to flash again the patched init_boot.img.
I didn’t touch vbmeta.
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