Juniper NSM Schema Upgrade Failed

My Juniper NSM version is 2012.1R6.
Tried to upgrade Juniper NSM Schema online from current 280 to latest 293, but got following failed message:

Error Code: 

Error Text:
   Schema Download Failed.

Error Details:
   No such file or directory
svn: Can't open file '/usr/netscreen/GuiSvr/var/dmi-schema-stage/nsm/dmi/junos-es/releases/12.1R5.5/.svn/text-base/config.xsd.svn-base': No such file or directory

Basically this NSM will have to manually upgrade schema, online is not working. Here are steps for how to do it:

1. Juniper KB13555 - [NSM] How to revert dmi-schema to the original installed version

2. Juniper KB12756 - [NSM NSMXpress] NSM Offline DMI schema update

Note: Technote ID:TN86 -NSM & Junos Compatibility Matrix, will be needed to download latest Schema from Schema Offline Download Links.