Can not install BSP on Qnx Momentics

I’m trying to install a bsp on my qnx momentics IDE 6.3 (the host is a windows machine). The bsp file is a .gpr extension (tar gz format).
I can not import it into the IDE as the package installer qnxinstaller is only for Qnx self hosted. Do I have to unzip manually the package or is there other means ?
Thanks a lot.

Where did you get the BSP from? AFAIK QNX does ship their BSP’s for Windows as standalong .exe installer.