I unlocked bootloader and rooted, I usee DSU Loader and dd command to extract boot.img from the device. (search it)
Note that the device must be before 2022-04-30 compile time to unlock bootloader, latest firmware blocks unlocking.
I'm searching fro DSU loader info — never used it before — and reading up on it. Thanks for the pointer.
Just for more details if I may:
— dd boot partition — understood; Looking now for how to via DSU loader.
— Then you patch via Magisk Manager I assume, right?
— How do you then flash back to phone? DSU loader again? Or is that where it's “magic ” comes in, it creates a virtual partitIon somewhere, placed modified boot there and you boot off of it?
— If the above is the case, do you boot modified via some boot combo?
— If it isn't the case, could you briefly describe?
I'm trying to find a pre-end-of-April device seller online now… :O)
BTW — is there a clean reflash or something option to rescue Vivo devices — if you brick it after root? Just factory reset from Recovery would do I guess.
Reason being — sometimes you're too eager to do somethIng and end up in a bootloop — happens to me from time to time - and I guess here the risk would be significant having to freeze all the China bloatware…
I would think there is Recovvery reset — but best to ask, I've never seen a Vivo device…