If loaders from other tools,and those available on internet won't work,then are u expecting us to contact vivo software developer for loader,Any leaving it without a satisfactory reply.
you need test different loaders -that work with your device
and please respect a little, when you contact us.
we are always working on providing the best to our users
loaders have to test them from factory firmware and different patch version firmwares.
-all teams protect their files! or add certain protocols