these are the instruction and what to add in your build.prop use a build.prop editor to prevent curruption

# OTA Updates
ro.ota.romname=  <---this is where your ROM name goes

ro.ota.version=  <---this is the date of when the installed rom was made needs to be like this no "/"  YYYYMMDD

ro.ota.manifest=   <-----This us where your url to tge update_manifest.xml is located this is where the OTAUpdates check for a update for your rom supports https:// and http:// protocals


# OTA Updates
ro.ota.romname=your ROM Name
ro.ota.version=Date Current Rom was made
ro.ota.manifest=https://yourserverurl.com/update_manifest.xml

MANIFEST INSTRUCTIONS:

The update_manifest.xml is a important file the OTAUpdates requires to check for an update for the ROM the user has installed, we recommend using Google Code to host your manifest file in the Source code this way you can make changes to it without manually updating the ROM to change the URL for the updater to check, just by editing the manifest on your Google code source code. the update_manifest.xml is already self explanatory and explains what to put in the values we also before uploading the manifest file use a xml editor

also a big note when applying a date and version they must have a latest date then the ROM itself for the updater to notice a newer version is available also the direct URL needs to be a file tgat can be directly updated so when the date and version is changed and the updater notices it, it can immediatly can fetch that file, dropbox is the best way to do, but remember it needs to be a direct download

