Versions 7.0.x and 7.1.x and earlier must be upgraded to version 7.6 or 7.7 before they can be
WhatsApp plus Apk upgraded to version 7.8.x.
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Websense Content Gateway and V-Series appliances must be at v7.7.x to upgrade to v7.8. (Note that V-Series appliances must first upgrade to v7.8.1 before upgrading to v7.8.2 or 7.8.3.)
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Data Security components (included with Web Security Gateway Anywhere) must be at v7.7.x to upgrade to v7.8.
For example, the path might be:
v7.0 (Web Filter, software-only) > v7.5 > v7.7 > v7.8
v7.1.1 (Web Security Gateway) > 7.6 > v7.7 > v7.8
Policy information and most configuration details are preserved across intermediate upgrades.