HI,
You can use JSPM as per this link
http://help.sap.com/saphelp_nwce10/helpdata/en/06/2dc545743a4f98950eec3f33ee4027/content.htm
OR manually upgrade the JVM via note 1611326 as the parameters are already set
Is there any special reason you are using sapinst?
Regards,
S.K