Root 4.3 update with MultiRom?

[KJRob]

I have a Wifi Nexus 7 running TWRP and MultiRom. Internal rom is stock 4.2.2 jdq39, additional rom is XenonHD. I would like to update the internal to the new 4.3 update. I obviously cant install via ota so I need to know how to make this happen. Any help would be greatly appreciated.

 

[colchiro]

Here's the 4.3 download: http://androidforums.com/nexus-7-ge...370-cant-find-ota-4-3-rooted.html#post6031156

Make sure you make a backup in recovery and wipe everything (both caches and data).