Hi !
I recently got a pixel 4a 5g (bramble), and when installing, I noticed there's a difference with respect other phones I've installed lineageos on, like motorola, xiomi redmi 4x (discontinued) and others.
On this pixel, and probably others, one needs to flash a boot.img, a dtbo.img and a vendor_boot.img, before sideloading lineageos. The vendor_boot.img is supposed to be the equivalent to the recovery.img.
On other phones there's only a recovery.img to flash, prior to sideloading lineageos.
Now, on this pixel majore version upgrades I see documented only the sideload of lineageos. For other phones I usually upgrade both, the recovery.img and then sideload the new major version of lineage. So not sure if I should then should flash all images, boot, dtbo and vendor_boot, when upgrading on major versions. I guess I could, but I'm wondering.
Moreover, even on same major OTA upgrades, I'm wondering what gets upgraded, if I have selected OTA upgrades to also upgrade recovery image, would it just upgrade the vendor_boot one, or would it flash all other images?
It's just that it involves flashing several other images, not matching the ones for other phones, :)
Thanks !