Installing CUDA 9.2

Hello i have installing cuda 9.0 and i want install cuda 9.2.
Then, do i need desinstall cuda 9.0 befor install 9.2 ?
… do i need install both cuda ?
Some one can help mee.
Thank you.

you don’t need to deinstall anything

Multiple cuda versions can sit on the same system.
You can specify which one to use via for example env var.

… installer error … :(
… installer error … :(
what can i do ?