[j-nsp] Problem while try to upgrade from 9.4R2.9 to 11.1

[Akom Podaeng]

try to upgrade from 9.4R2.9 to 11.1R2.5   on MX-240 with dual RE-S-2000

user at MX> request system software add validate
/var/tmp/jinstall-11.1R2.3-domestic-signed.tgz
WARNING: Package jinstall-11.1R2.3-domestic-signed is not compatible with
this memory size.
WARNING: Please restrict memory by adding the following to /boot/loader.conf
:
WARNING: hw.physmem=2G
WARNING: Package jinstall-11.1R2.3-domestic-signed is not compatible with
this hardware.
WARNING: Please install a package with version 8.2 or higher.

should I install from Jinstall media ?

TIA
./Dave